Dataset

School Situation

School situations contains questions about children's schoolgoing situation, including the type of school the children attend, whether twins attend the same or different school or class, whether the child has ever skipped or repeated grades, and truancy.

In NTR projects YC_DSC and YC_ADHMRI, mother-ratings were obtained via a telephone interview, and in NTR project YC_FITNSS, via a face-to-face interview.

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Keywords	class composition demographics education school truancy
Constructs	work and school
Waves	Young Netherlands Twin Register YS_5 MC 5.0 years From 1994-01-01 (ongoing) YS_TRF5 TC 5.0 years From 1996-01-01 to 2008-01-01 YS_7 MC FC 7.0 years From 1995-01-01 (ongoing) YS_TRF7 TC 7.0 years From 1999-01-01 (ongoing) YS_10 MC FC 9.0 - 10.0 years From 1997-01-01 (ongoing) YS_TRF10 TC 9.0 - 10.0 years From 1999-01-01 (ongoing) YS_12 MC FC 12.0 years From 1998-01-01 (ongoing) YS_TRF12 TC 12.0 years From 1999-01-01 (ongoing) YS_DHBQP CC SS 14.0 - 18.0 years From 2004-01-01 to 2004-01-01 YS_DHBQ14 CC SS 14.0 years From 2005-01-01 to 2013-01-01 YS_DHBQ16 CC SS 16.0 years From 2005-01-01 to 2013-01-01 YS_DHBQ18 CC SS 18.0 years From 2005-01-01 to 2006-01-01 YC_BS1 MS 9.0 years From 2005-01-01 to 2005-01-01 YC_BS2 MS CC SS 12.0 years From 2007-01-01 to 2009-01-01 YC_DSC MC CC 10.0 - 13.0 years From 2002-01-01 to 2005-01-01 YE_FITNSS CC SS 16.0 - 18.0 years From 2012-01-01 to 2014-01-01 YE_ATTEF2 MS CC MC 12.0 years From 2002-01-01 to 2004-01-01 YC_ADHMRI MC CC 15.0 years From 2003-01-01 to 2007-01-01 YS_DT PC 10.0 - 24.0 years From 2011-01-01 to 2013-01-01 YE_COG12 CC MC 12.0 years From 1998-01-01 to 2000-01-01 YE_COG18 CC SS 18.0 years From 2004-01-01 to 2006-01-01 YS_TRIP age 3 MC FC 36 months From 1991-01-01 (ongoing) YS_TRIP age 4 MC FC 4.0 years From 1998-01-01 to 2011-01-01 YS_TRIP age 5 MC FC 5.0 years From 1991-01-01 (ongoing) YS_TRIP age 7 MC FC 7.0 years From 1998-01-01 (ongoing) YS_TRIP age 10 MC FC 9.0 - 10.0 years From 1998-01-01 (ongoing) YS_TRIP age 12 MC FC 12.0 years From 1998-01-01 (ongoing)
Mode of collection	SelfAdministeredQuestionnaire
Analysis unit	Individual, Family

Purpose	The research carried out by the Netherlands Twin Register focuses on the role of heritability in mental and physical health. For instance, the NTR investigates why some people become more easily depressed than others, or why certain people get diabetes while others do not. Other research areas include lifestyle and habits that influence health and disease, such as smoking, drinking and exercise.
description
Alternate title	NTR
Data access information	Researchers with an approved data sharing request who abide by the rules of the European General Data Protection Regulation can receive temporary access to the NTR data for their own research projects. https://ntr-data-request.psy.vu.nl/
Publisher	Vrije Universiteit Amsterdam
Principal investigators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Cohort study international identifier
Language	NL
Funding information	Dutch Research Council 480-15-001/674 Funder identifier https://ror.org/04jsz6e67 Funder identifier type ROR Funder identifier type URI https://ror.org/ Funder award title Funder award URI Dutch Research Council 575-25-006 Funder identifier https://ror.org/04jsz6e67 Funder identifier type ROR Funder identifier type URI https://ror.org/ Funder award title Funder award URI Dutch Research Council 480-04-004 Funder identifier https://ror.org/04jsz6e67 Funder identifier type ROR Funder identifier type URI https://ror.org/ Funder award title Funder award URI Dutch Research Council 911-09-032 Funder identifier https://ror.org/04jsz6e67 Funder identifier type ROR Funder identifier type URI https://ror.org/ Funder award title Funder award URI
Contact information	NTR Data Management Vrije Universiteit Amsterdam ntr.datamanagement.fgb@vu.nl
References	Boomsma DI, de Geus EJ, Vink JM, Stubbe JH, Distel MA, Hottenga JJ, Posthuma D, van Beijsterveldt TC, Hudziak JJ, Bartels M, Willemsen G. Netherlands Twin Register: from twins to twin families. Twin Res Hum Genet. 2006 Dec;9(6):849-57. doi: 10.1375/183242706779462426. PMID: 17254420. Boomsma DI, Willemsen G, Vink JM, Bartels M, Groot P, Hottenga JJ, van Beijsterveldt CE, Stroet T, van Dijk R, Wertheim R, Visser M, van der Kleij F. Design and implementation of a twin-family database for behavior genetics and genomics studies. Twin Res Hum Genet. 2008 Jun;11(3):342-8. doi: 10.1375/twin.11.3.342. PMID: 18498212. van Beijsterveldt CE, Groen-Blokhuis M, Hottenga JJ, Franić S, Hudziak JJ, Lamb D, Huppertz C, de Zeeuw E, Nivard M, Schutte N, Swagerman S, Glasner T, van Fulpen M, Brouwer C, Stroet T, Nowotny D, Ehli EA, Davies GE, Scheet P, Orlebeke JF, Kan KJ, Smit D, Dolan CV, Middeldorp CM, de Geus EJ, Bartels M, Boomsma DI. The Young Netherlands Twin Register (YNTR): longitudinal twin and family studies in over 70,000 children. Twin Res Hum Genet. 2013 Feb;16(1):252-67. doi: 10.1017/thg.2012.118. Epub 2012 Nov 28. PMID: 23186620. Ligthart L, van Beijsterveldt CEM, Kevenaar ST, de Zeeuw E, van Bergen E, Bruins S, Pool R, Helmer Q, van Dongen J, Hottenga JJ, Van't Ent D, Dolan CV, Davies GE, Ehli EA, Bartels M, Willemsen G, de Geus EJC, Boomsma DI. The Netherlands Twin Register: Longitudinal Research Based on Twin and Twin-Family Designs. Twin Res Hum Genet. 2019 Dec;22(6):623-636. doi: 10.1017/thg.2019.93. Epub 2019 Oct 31. PMID: 31666148. Bartels M, van Beijsterveldt CE, Derks EM, Stroet TM, Polderman TJ, Hudziak JJ, Boomsma DI. Young Netherlands Twin Register (Y-NTR): a longitudinal multiple informant study of problem behavior. Twin Res Hum Genet. 2007 Feb;10(1):3-11. doi: 10.1375/twin.10.1.3.PMID: 17539360. Boomsma DI, Orlebeke JF, van Baal GC.Behav Genet. The Dutch Twin Register: growth data on weight and height. 1992 Mar;22(2):247-51. doi: 10.1007/BF01067004 Franić S, Dolan CV, van Beijsterveldt CE, Hulshoff Pol HE, Bartels M, Boomsma DI. Genetic and environmental stability of intelligence in childhood and adolescence. Twin Res Hum Genet. 2014 Jun;17(3):151-63. doi: 10.1017/thg.2014.
Additional info (URL)
Additional information
Contributors	YNTR administration Vrije Universiteit Amsterdam
Time method	Longitudinal
Universe	The recruitment into the NTR is fully inclusive without any restrictions on enrolment. In the CID data catalogue, only the NTR projects for children and adolescents (<18 years of age) have been included. This is refered to as the Young Netherlands Twin Register (YNTR).

Alternate title	YNTR
Description	The Young Netherlands Twin Register (YNTR) consists of projects within the Netherlands Twin Register (NTR) that involve families with twins or other multiples under the age of 18.
Purpose	The purpose of the projects within the Young Netherlands Twin Register focus on the role of heritability in mental and physical health. For instance, the NTR investigates why some people become more easily depressed than others, or why certain people get diabetes while others do not. Other research areas include lifestyle and habits that influence health and disease, such as smoking, drinking and exercise.
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Language	NL
Cohort international identifier
Funding information	Dutch Research Council 480-15-001/674 Funder identifier https://ror.org/04jsz6e67 ROR Identifier type URI https://ror.org/ Funder award title Funder award URI Dutch Research Council 575-25-006 Funder identifier https://ror.org/04jsz6e67 ROR Identifier type URI https://ror.org/ Funder award title Funder award URI Dutch Research Council 480-04-004 Funder identifier https://ror.org/04jsz6e67 ROR Identifier type URI https://ror.org/ Funder award title Funder award URI Dutch Research Council 911-09-032 Funder identifier https://ror.org/04jsz6e67 ROR Identifier type URI https://ror.org/ Funder award title Funder award URI
Cohort reference papers
Classification
Contact information
Waves
Contributors	YNTR administration Vrije Universiteit Amsterdam
References	Boomsma DI, de Geus EJ, Vink JM, Stubbe JH, Distel MA, Hottenga JJ, Posthuma D, van Beijsterveldt TC, Hudziak JJ, Bartels M, Willemsen G. Netherlands Twin Register: from twins to twin families. Twin Res Hum Genet. 2006 Dec;9(6):849-57. doi: 10.1375/183242706779462426. PMID: 17254420. Boomsma DI, Willemsen G, Vink JM, Bartels M, Groot P, Hottenga JJ, van Beijsterveldt CE, Stroet T, van Dijk R, Wertheim R, Visser M, van der Kleij F. Design and implementation of a twin-family database for behavior genetics and genomics studies. Twin Res Hum Genet. 2008 Jun;11(3):342-8. doi: 10.1375/twin.11.3.342. PMID: 18498212. van Beijsterveldt CE, Groen-Blokhuis M, Hottenga JJ, Franić S, Hudziak JJ, Lamb D, Huppertz C, de Zeeuw E, Nivard M, Schutte N, Swagerman S, Glasner T, van Fulpen M, Brouwer C, Stroet T, Nowotny D, Ehli EA, Davies GE, Scheet P, Orlebeke JF, Kan KJ, Smit D, Dolan CV, Middeldorp CM, de Geus EJ, Bartels M, Boomsma DI. The Young Netherlands Twin Register (YNTR): longitudinal twin and family studies in over 70,000 children. Twin Res Hum Genet. 2013 Feb;16(1):252-67. doi: 10.1017/thg.2012.118. Epub 2012 Nov 28. PMID: 23186620. Ligthart L, van Beijsterveldt CEM, Kevenaar ST, de Zeeuw E, van Bergen E, Bruins S, Pool R, Helmer Q, van Dongen J, Hottenga JJ, Van't Ent D, Dolan CV, Davies GE, Ehli EA, Bartels M, Willemsen G, de Geus EJC, Boomsma DI. The Netherlands Twin Register: Longitudinal Research Based on Twin and Twin-Family Designs. Twin Res Hum Genet. 2019 Dec;22(6):623-636. doi: 10.1017/thg.2019.93. Epub 2019 Oct 31. PMID: 31666148.
Country code	NL
Geographic location
Lowest geographic reference	postal code
Highest geographic reference	country
Cohort universe description	Families with twins or other multiples under the age of 18.
Analysis unit
Additional info (URL)
Additional information
Time method	Longitudinal.CohortEventBased

Measure was collected within the following wave(s):

YS_5 Wave

Wave alternate title	YNTR survey age 5 YS_5
Short description of the wave	The YS_5 survey is sent to the mothers around the 5th birth year of the twins (mean age = 5.52 years, SD = 0.55 years). The survey includes items on child care and school, growth, zygosity, toilet training, asthma and eczema, fine motor coordination, language development, and problem behaviors as assessed by a short version of the Devereux Child Behavior Checklist (DCB). The booklet includes an extra section for fathers of twins to report about behavior problems. From 2011 onward, items on child care and school, living and family situation were updated and items on wellbeing were added. From the second half of 2015 the short form of the Childhood Behavior Questionnaire (CBQ) was added. From 2017 the surveys no longer have a separate section for the father.
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Funding information
References
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	1994-01-01
End date wave collection
Wave universe description	5.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys (up to 2017) have been scanned. All data are digitally archived.
Additional info (URL)
Additional information
Contributors	YNTR administration Vrije Universiteit Amsterdam

YS_TRF5 Wave

Wave alternate title	YNTR teacher survey age 5 YS_TRF5
Short description of the wave	In the YS_TRF5 project, teacher data were collected in 2 sub-groups of 5-year-old twins (mean age = 5.66 years, SD = 0.31 years) born in 1990/1991 and in 2002/2003, and their 6-12 year old siblings (mean age = 8.00 years, SD = 1.17 years) born between 1995-2004. One subgroup was part of the study YE_ATTEF1 (Polderman et al., 2006) and one was for a try-out study in 2008. The survey for the primary school teachers includes items on the teacher, class and school, functioning of the child, school performance, and standardized questionnaires on problem behavior, namely the Teacher Report Form (TRF), and the short version of the Conners’ Teacher Ratings Scale - Revised (CTRS-R).
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Funding information	481-08-011 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI
References	Polderman TJ, Posthuma D, De Sonneville LM, Verhulst FC, Boomsma DI. Genetic analyses of teacher ratings of problem behavior in 5-year-old twins. Twin Res Hum Genet. 2006 Feb;9(1):122-30. doi: 10.1375/183242706776402975. PMID: 16611477. Boomsma, D.I., Bartels, M., de Geus, J.C.N. , van Beijsterveldt, C.E.M. (2013) Teacher Report Forms (TRF) and Conners' Teacher Rating Scale (short version - Revised) in twins and siblings registered with the Netherlands Twin Registry (NTR). DANS Data Station Social Sciences and Humanities, V2, https://doi.org/10.17026/dans-xbh-p5ht.
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	1996-01-01
End date wave collection	2008-01-01
Wave universe description	5.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	YNTR administration Vrije Universiteit Amsterdam Polderman, Tinca J. C. Vrije Universiteit Amsterdam

YS_7 Wave

Wave alternate title	YNTR survey age 7 YS_7
Short description of the wave	The YS_7 survey collects information on the twins at age 7 (mean age = 7.47 years, SD = 0.40 years) from both parents and targets the development of emotional and behavior problems, as assessed by the Child Behavior Checklist 6-18 (CBCL). From 2001 onwards, the Conners’ Parent Rating Scale - Revised (CPRS-R) was also included. In addition, these surveys included items on zygosity, medical conditions, vaccinations, tonsillectomy (from 2005), demographic characteristics, growth, sport and leisure activity of both children and parents, and additional items on wellbeing (from 2010). In 2017 the survey was considerably shortened (for example the Conners was removed).
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Funding information	165 Funder identifier Identifier type URI Funder award title Funder award URI
References	Boomsma DI, Willemsen G, Vink JM, Bartels M, Groot P, Hottenga JJ, van Beijsterveldt CE, Stroet T, van Dijk R, Wertheim R, Visser M, van der Kleij F. Design and implementation of a twin-family database for behavior genetics and genomics studies. Twin Res Hum Genet. 2008 Jun;11(3):342-8. doi: 10.1375/twin.11.3.342. PMID: 18498212. van der Valk, J. C. (2001). The Genetic and Environmental Contributions to Children's Problem Behaviors: A Developmental Approach. https://research.vu.nl/en/publications/the-genetic-and-environmental-contributions-to-childrens-problem-. ISBN: 90-9014842-6.
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	1995-01-01
End date wave collection
Wave universe description	7.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys (up to 2017) have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	YNTR administration Vrije Universiteit Amsterdam

YS_TRF7 Wave

Wave alternate title	YNTR teacher survey age 7 YS_TRF7
Short description of the wave	The YS_TRF7 survey for primary school teachers includes items on the teacher, class and school, functioning of the child, school performance, bullying and victimization (from 2010), and standardized questionnaires on problem behavior, namely the Teacher Report Form (TRF), the short version of the Conners’ Teacher Ratings Scale - Revised (CTRS-R), and the Social Skills Rating System (SSRS) (from 2017). Parents of twins that are approximately 7 years old (in 2009 age 6; mean age = 6.91 years, SD = 0.52 years) born in or after 1992, are contacted to ask for their permission to approach the teacher(s). From 2006 onwards, the consent to approach a teacher was extended to the non-twin siblings (6-12 years; mean age = 9.4 years, SD = 1.47 years) of their twins, and from 2009 with consent for triplets.
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Funding information	056-31-001 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI 0240-001-003 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI 481-08-011 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI 056-32-010 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI
References	de Zeeuw, L. E. J. (2015). Educational Achievement in Children: Twinning, Teachers and Genes. https://research.vu.nl/en/publications/educational-achievement-in-children-twinning-teachers-and-genes. ISBN: 978-94-6259-562-0. de Zeeuw EL, van Beijsterveldt CE, de Geus EJ, Boomsma DI. Twin specific risk factors in primary school achievements. Twin Res Hum Genet. 2012 Feb;15(1):107-15. doi: 10.1375/twin.15.1.107. PMID: 22784460. Boomsma, D.I., Bartels, M., de Geus, J.C.N. , van Beijsterveldt, C.E.M. (2013) Teacher Report Forms (TRF) and Conners' Teacher Rating Scale (short version - Revised) in twins and siblings registered with the Netherlands Twin Registry (NTR). DANS Data Station Social Sciences and Humanities, V2, https://doi.org/10.17026/dans-xbh-p5ht.
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	1999-01-01
End date wave collection
Wave universe description	7.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys (up to 2012) have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	YNTR administration Vrije Universiteit Amsterdam de Zeeuw, Eveline L. Vrije Universiteit Amsterdam Kevenaar, Sofieke T. Vrije Universiteit Amsterdam

YS_10 Wave

Wave alternate title	YNTR survey age 9/10 YS_10
Short description of the wave	The YNTR survey 9/10 targets the development of emotional and behavior problems in 9-10 year old twins (mean age = 9.9 years, SD = 0.52 years), as assessed by the Child Behavior Checklist 6-18 (CBCL). From 2001 onwards, the Conners’ Parent Rating Scale - Revised (CPRS-R) was also included. In addition, these surveys included items on zygosity, medical conditions, vaccinations, tonsillectomy (from 2005), demographic characteristics, growth, sport and leisure activity of both children and parents, and additional items on wellbeing (from 2010).
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Funding information
References	Boomsma DI, Willemsen G, Vink JM, Bartels M, Groot P, Hottenga JJ, van Beijsterveldt CE, Stroet T, van Dijk R, Wertheim R, Visser M, van der Kleij F. Design and implementation of a twin-family database for behavior genetics and genomics studies. Twin Res Hum Genet. 2008 Jun;11(3):342-8. doi: 10.1375/twin.11.3.342. PMID: 18498212.
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	1997-01-01
End date wave collection
Wave universe description	9.0 - 10.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys (up to 2017) have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	YNTR administration Vrije Universiteit Amsterdam

YS_TRF10 Wave

Wave alternate title	YNTR teacher survey age 9/10 YS_TRF10
Short description of the wave	The YS_TRF10 survey for primary school teachers includes items on the teacher, class and school, functioning of the child, school performance, bullying and victimization (from 2010), and standardized questionnaires on problem behavior, namely the Teacher Report Form (TRF), the short version of the Conners’ Teacher Ratings Scale - Revised (CTRS-R), and the Social Skills Rating System (SSRS) (from 2017). Parents of twins that are approximately 9 (until 2009 age 10; mean age = 9.27 years, SD = .69 years) are contacted to ask for their permission to approach the teacher(s). From 2006 onwards, the consent to approach a teacher was extended to the non-twin siblings (6-12 years; mean age = 9.78 years, SD = 2.19 years) of their twins, and from 2009 with consent for triplets.
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Funding information	056-31-001 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI 0240-001-003 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI 481-08-011 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI 056-32-010 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI
References	de Zeeuw, L. E. J. (2015). Educational Achievement in Children: Twinning, Teachers and Genes. https://research.vu.nl/en/publications/educational-achievement-in-children-twinning-teachers-and-genes. ISBN: 978-94-6259-562-0. de Zeeuw EL, van Beijsterveldt CE, de Geus EJ, Boomsma DI. Twin specific risk factors in primary school achievements. Twin Res Hum Genet. 2012 Feb;15(1):107-15. doi: 10.1375/twin.15.1.107. PMID: 22784460. Boomsma, D.I., Bartels, M., de Geus, J.C.N. , van Beijsterveldt, C.E.M. (2013) Teacher Report Forms (TRF) and Conners' Teacher Rating Scale (short version - Revised) in twins and siblings registered with the Netherlands Twin Registry (NTR). DANS Data Station Social Sciences and Humanities, V2, https://doi.org/10.17026/dans-xbh-p5ht.
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	1999-01-01
End date wave collection
Wave universe description	9.0 - 10.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys (up to 2012) have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	YNTR administration Vrije Universiteit Amsterdam de Zeeuw, Eveline L. Vrije Universiteit Amsterdam Kevenaar, Sofieke T. Vrije Universiteit Amsterdam

YS_12 Wave

Wave alternate title	YNTR survey age 12 YS_12
Short description of the wave	The YNTR survey 12 was emailed to both parents of twins around the 12th birthday of the twins (mean age = 12.35 years, SD = 0.53 years). The survey targets the development of emotional and behavior problems as assessed by the Child Behavior Checklist 6-18 (CBCL). From 2001 onwards, the Conners’ Parent Rating Scale - Revised (CPRS-R) was also included. In addition, these surveys included items on zygosity, medical conditions, demographic characteristics, growth, sport and leisure activity of both children and parents (from 2003), and additional items on wellbeing (from 2008). In 2017 and 2018 the length of the questionnaire was shortened, the ASEBA Brief Problem Monitor (BPM) was used instead of the CBCL, and the 'cito survey' was added (see YS_CITO). From 2019, the questionnaire returned to its original length with CBCL and Conners items, and from 2020 the items on leisure time and on family and living situation were removed.
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Funding information
References
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	1998-01-01
End date wave collection
Wave universe description	12.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys (up to 2017) have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	YNTR administration Vrije Universiteit Amsterdam

YS_TRF12 Wave

Wave alternate title	YNTR teacher survey age 12 YS_TRF12
Short description of the wave	The YS_TRF12 survey for primary school teachers includes items on the teacher, class and school, functioning of the child, school performance, bullying and victimization (from 2010), and standardized questionnaires on problem behavior, namely the Teacher Report Form (TRF), the short version of the Conners’ Teacher Ratings Scale - Revised (CTRS-R), and the Social Skills Rating System (SSRS) (from 2017). Parents of twins that are approximately 12 (mean age = 12.13 years, SD = 0.30 years) are contacted to ask for their permission to approach the teacher(s). From 2006 onwards, the consent to approach a teacher was extended to the non-twin siblings (6-12 years; mean age = 8.82 years, SD = 1.37 years) of their twins, and from 2009 with consent for triplets.
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Funding information	056-31-001 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI 0240-001-003 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI 481-08-011 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI 056-32-010 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI
References	de Zeeuw, L. E. J. (2015). Educational Achievement in Children: Twinning, Teachers and Genes. https://research.vu.nl/en/publications/educational-achievement-in-children-twinning-teachers-and-genes. ISBN: 978-94-6259-562-0. de Zeeuw EL, van Beijsterveldt CE, de Geus EJ, Boomsma DI. Twin specific risk factors in primary school achievements. Twin Res Hum Genet. 2012 Feb;15(1):107-15. doi: 10.1375/twin.15.1.107. PMID: 22784460. Boomsma, D.I., Bartels, M., de Geus, J.C.N. , van Beijsterveldt, C.E.M. (2013) Teacher Report Forms (TRF) and Conners' Teacher Rating Scale (short version - Revised) in twins and siblings registered with the Netherlands Twin Registry (NTR). DANS Data Station Social Sciences and Humanities, V2, https://doi.org/10.17026/dans-xbh-p5ht.
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	1999-01-01
End date wave collection
Wave universe description	12.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys (up to 2012) have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	YNTR administration Vrije Universiteit Amsterdam de Zeeuw, Eveline L. Vrije Universiteit Amsterdam Kevenaar, Sofieke T. Vrije Universiteit Amsterdam

YS_DHBQP Wave

Wave alternate title	Dutch Health and Behavior Questionnaire - pilot YS_DHBQP
Short description of the wave	In this pilot project, the Dutch Health and Behavior Questionnaire (DHBQ) was developed at the department of Biological Psychology of the VU University. It is a collection of standardized questions targeting multiple domains. The focus of the survey is on emotional and behavioral problems assessed by the Youth Self-Report (YSR), subjective wellbeing, lifestyle, exercise behavior, sedentary behavior, and family functioning. The pilot was sent to 14-, 16-, and 18-year old twins (mean age = 16.6 years, SD = 0.60 years) born between 1993 and 1990 and their 12-25 year old siblings (mean age = 17.5 years, SD = 3.08 years) born between 1981 and 1991.
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam Bartels, Meike Vrije Universiteit Amsterdam
Funding information	463-06-001 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI
References	van der Aa, N. (2011). Causes of variation in adolescent wellbeing. https://research.vu.nl/en/publications/causes-of-variation-in-adolescent-wellbeing. ISBN: 978-94-6169-009-8. Huppertz, C. (2016). How voluntary exercise behavior runs in families: Twin studies and beyond. https://research.vu.nl/en/publications/how-voluntary-exercise-behavior-runs-in-families-twin-studies-and. ISBN: 978-94-6299-314-3.
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	2004-01-01
End date wave collection	2004-01-01
Wave universe description	14.0 - 18.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	YNTR administration Vrije Universiteit Amsterdam Slof-Op 't Landt, Margarita C.T. Leiden University Medical Center

YS_DHBQ14 Wave

Wave alternate title	Dutch Health and Behavior Questionnaire - age 14 YS_DHBQ14
Short description of the wave	The Dutch Health and Behavior Questionnaire (DHBQ) was developed at the department of Biological Psychology of the VU University. It is a collection of standardized questions targeting multiple domains. The focus of the survey is on emotional and behavioral problems assessed by the Youth Self-Report (YSR), subjective wellbeing, lifestyle, exercise behavior, sedentary behavior, and family functioning. The YS_DHBQ14 project targeted 14-year old twins or triplets (mean age = 14.6 years, SD = 0.65 years) born between 1989 and 1999 and their 12-25 year old siblings (mean = 17.3 years, SD = 2.55 years) born between 1981 and 2001.
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam Bartels, Meike Vrije Universiteit Amsterdam
Funding information	463-06-001 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI
References	van der Aa, N. (2011). Causes of variation in adolescent wellbeing. https://research.vu.nl/en/publications/causes-of-variation-in-adolescent-wellbeing. ISBN: 978-94-6169-009-8. Huppertz, C. (2016). How voluntary exercise behavior runs in families: Twin studies and beyond. https://research.vu.nl/en/publications/how-voluntary-exercise-behavior-runs-in-families-twin-studies-and. ISBN: 978-94-6299-314-3.
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	2005-01-01
End date wave collection	2013-01-01
Wave universe description	14.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys (up to 2009) have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	YNTR administration Vrije Universiteit Amsterdam van der Aa, Niels Vrije Universiteit Amsterdam Huppertz, Charlotte Vrije Universiteit Amsterdam

YS_DHBQ16 Wave

Wave alternate title	Dutch Health and Behavior Questionnaire - age 16 YS_DHBQ16
Short description of the wave	The Dutch Health and Behavior Questionnaire (DHBQ) was developed at the department of Biological Psychology of the VU University. It is a collection of standardized questions targeting multiple domains. The focus of the survey is on emotional and behavioral problems assessed by the Youth Self-Report (YSR), subjective wellbeing, lifestyle, exercise behavior, sedentary behavior, and family functioning. From 2007, the survey includes the NEO Five Factor Inventory (NEO-FFI) and removed items regarding religion, stuttering, type of transportation to school, and hair/eye color. The YS_DHBQ16 project targeted 16-year old twins or triplets (mean age = 16.9 years, SD = 0.55 years) born between 1987 and 1999 and their 12-25 year old siblings (mean age = 18.5 years, SD = 3.34 years) born between 1981 and 2000.
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam Bartels, Meike Vrije Universiteit Amsterdam
Funding information	463-06-001 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI
References	van der Aa, N. (2011). Causes of variation in adolescent wellbeing. https://research.vu.nl/en/publications/causes-of-variation-in-adolescent-wellbeing. ISBN: 978-94-6169-009-8. Huppertz, C. (2016). How voluntary exercise behavior runs in families: Twin studies and beyond. https://research.vu.nl/en/publications/how-voluntary-exercise-behavior-runs-in-families-twin-studies-and. ISBN: 978-94-6299-314-3.
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	2005-01-01
End date wave collection	2013-01-01
Wave universe description	16.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys (up to 2009) have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	YNTR administration Vrije Universiteit Amsterdam van der Aa, Niels Vrije Universiteit Amsterdam Huppertz, Charlotte Vrije Universiteit Amsterdam

YS_DHBQ18 Wave

Wave alternate title	Dutch Health and Behavior Questionnaire - age 18 YS_DHBQ18
Short description of the wave	The Dutch Health and Behavior Questionnaire (DHBQ) was developed at the department of Biological Psychology of the VU University. It is a collection of standardized questions targeting multiple domains. The focus of the survey is on emotional and behavioral problems assessed by the Youth Self-Report (YSR), subjective wellbeing, lifestyle, exercise behavior, sedentary behavior, and family functioning. The YS_DHBQ18 targeted 18-year old twins or triplets (mean age = 18.6 years, SD = 0.47 years) born between 1986 and 1992 and their 12-25 year old siblings (mean age = 19.3 years, SD = 4.13 years) born between 1980 and 1994.
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam Bartels, Meike Vrije Universiteit Amsterdam
Funding information	463-06-001 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI
References	van der Aa, N. (2011). Causes of variation in adolescent wellbeing. https://research.vu.nl/en/publications/causes-of-variation-in-adolescent-wellbeing. ISBN: 978-94-6169-009-8. Huppertz, C. (2016). How voluntary exercise behavior runs in families: Twin studies and beyond. https://research.vu.nl/en/publications/how-voluntary-exercise-behavior-runs-in-families-twin-studies-and. ISBN: 978-94-6299-314-3.
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	2005-01-01
End date wave collection	2006-01-01
Wave universe description	18.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	YNTR administration Vrije Universiteit Amsterdam van der Aa, Niels Vrije Universiteit Amsterdam Huppertz, Charlotte Vrije Universiteit Amsterdam

YC_BS1 Wave

Wave alternate title	Brain Scale measurement 1 YC_BS1, Brain Scale measurement t0, BrainScale age 9
Short description of the wave	The YC_BS1 project was the first measurement in the Dutch longitudinal Brain Scale study in which twins, their siblings and their parents were assessed at three year intervals. YC_BS1 targeted 9-year old twins (mean age = 9.1 years, SD = 0.51 years) born between 1995 and 1996, and their 9-14 year old siblings (mean age = 11.9 years, SD = 1.16 years) born between 1990 and 1997. The main aim of the Brain Scale project was to explore to what extent genetic and environmental factors explain individual differences in brain development and cognition. Data collection included psychometric IQ tests, a comprehensive neuropsychological testing protocol, and parental and self-ratings of behavioral and emotional problems. Physical maturation was measured through assessment of Tanner stages. Hormonal levels (cortisol, luteinizing hormone, follicle-stimulating hormone, testosterone, and estrogens) were assessed in urine and saliva. Brain scans were acquired using 1.5 Tesla Magnetic Resonance Imaging (MRI), which provided volumetric measures and measures of cortical thickness. Buccal swabs were collected for DNA isolation for future candidate gene and genome-wide analysis studies.
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Funding information	051.02.060 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI 051.02.061 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI 56-464-14192 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Spinoza Prize Funder award URI
References	van Soelen IL, Brouwer RM, Peper JS, van Leeuwen M, Koenis MM, van Beijsterveldt TC, Swagerman SC, Kahn RS, Hulshoff Pol HE, Boomsma DI. Brain SCALE: brain structure and cognition: an adolescent longitudinal twin study into the genetic etiology of individual differences. Twin Res Hum Genet. 2012 Jun;15(3):453-67. doi: 10.1017/thg.2012.4. PMID: 22856378. van Leeuwen, M. (2008). A study of cognition in pre-adolescent twins. https://research.vu.nl/en/publications/a-study-of-cognition-in-pre-adolescent-twins. ISBN: 978 90 9023637 7. Peper, J. S. (2008). The early pubertal brain: work in progress: A study on genetic and hormonal influences. https://research.vu.nl/en/publications/the-early-pubertal-brain-work-in-progress-a-study-on-genetic-and-. ISBN: 978-90-393-4917-5.
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	2005-01-01
End date wave collection	2005-01-01
Wave universe description	9.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	van Leeuwen, Marieke Vrije Universiteit Amsterdam Peper, Jiska Vrije Universiteit Amsterdam

YC_BS2 Wave

Wave alternate title	Brain Scale measurement 2 YC_BS2, Brain Scale measurement t1, BrainScale age 12
Short description of the wave	The YC_BS2 project was the second measurement in the Dutch longitudinal Brain Scale study in which twins, their siblings and their parents were assessed at three year intervals. YC_BS2 took place three years after the baseline (YC_BS1) and targeted 12-year old twins (mean age = 12.2 years, SD = 0.3 years) born between 1995 and 1996 and their 9-18 year old siblings (mean age = 14.8 years, SD = 1.3 years) born between 1990 and 1997. The main aim of the Brain Scale project was to explore to what extent genetic and environmental factors explain individual differences in brain development and cognition. Data collection included psychometric IQ tests, a comprehensive neuropsychological testing protocol, and parental and self-ratings of behavioral and emotional problems. Physical maturation was measured through assessment of Tanner stages. Hormonal levels (cortisol, luteinizing hormone, follicle-stimulating hormone, testosterone, and estrogens) were assessed in urine and saliva. Brain scans were acquired using 1.5 Tesla Magnetic Resonance Imaging (MRI), which provided volumetric measures and measures of cortical thickness. Buccal swabs were collected for DNA isolation for future candidate gene and genome-wide analysis studies.
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Funding information	56-464-14192 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Spinoza Prize Funder award URI
References	van Soelen IL, Brouwer RM, Peper JS, van Leeuwen M, Koenis MM, van Beijsterveldt TC, Swagerman SC, Kahn RS, Hulshoff Pol HE, Boomsma DI. Brain SCALE: brain structure and cognition: an adolescent longitudinal twin study into the genetic etiology of individual differences. Twin Res Hum Genet. 2012 Jun;15(3):453-67. doi: 10.1017/thg.2012.4. PMID: 22856378. van Soelen, I. L. C. (2011). Genetics of Structural Brain Development and Cognition in Childhood and Early Adolescence. https://research.vu.nl/en/publications/genetics-of-structural-brain-development-and-cognition-in-childho. ISBN: 978-90-6464-498-6.
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	2007-01-01
End date wave collection	2009-01-01
Wave universe description	12.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	van Soelen, Inge Vrije Universiteit Amsterdam

YC_DSC Wave

Wave alternate title	DISC-IV DSM diagnosis of ADHD and multi-informant CBCL-AP syndrome scores YC_DSC
Short description of the wave	The purpose of the YC_DSC project was to investigate the relation between Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) diagnosis of ADHD and Child Behavioral Checklist Attention Problems (CBCL-AP) scores. Twins were selected based on their maternal CBCL-AP scores at ages 7, 10 and 12 (mean age = 11.7 years, SD = 0.78 years). Twin pairs were selected if at least one of the twins scored high on AP (affected pairs), or if both twins scored low on AP (control pairs). In families that agreed to participate, the mother of the twins was interviewed by telephone with the Diagnostic Interview Schedule for Children (DISC-IV). Other surveys that were collected are the CBCL, SWAN and YSR. Mouth swabs were used to collect buccal cell samples, from which DNA was extracted.
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Funding information	MH58799-03 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Investigator Initiated Research Grant (R01) Funder award URI
References	Derks EM, Hudziak JJ, Dolan CV, Ferdinand RF, Boomsma DI. The relations between DISC-IV DSM diagnoses of ADHD and multi-informant CBCL-AP syndrome scores. Compr Psychiatry. 2006 Mar-Apr;47(2):116-22. doi: 10.1016/j.comppsych.2005.05.006. PMID: 16490569. Derks, E. M. (2006). Assessment and genetic aetiology of attention problems, hyperactivity, and related disorders. Derks EM, Hudziak JJ, Dolan CV, van Beijsterveldt TC, Verhulst FC, Boomsma DI. Genetic and environmental influences on the relation between attention problems and attention deficit hyperactivity disorder. Behav Genet. 2008 Jan;38(1):11-23. doi: 10.1007/s10519-007-9178-8. Epub 2007 Dec 12. PMID: 18074222; PMCID: PMC2226020.
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	2002-01-01
End date wave collection	2005-01-01
Wave universe description	10.0 - 13.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	Derks, Eske M. Vrije Universiteit Amsterdam

YE_FITNSS Wave

Wave alternate title	Determinants of adolescent exercise behavior - the psychological response to exercise YE_FITNSS
Short description of the wave	The YE_FITNSS project aimed to investigate determinants of adolescent exercise behavior in a sample of healthy 16-18 year old twins born between 1993 and 1999 (mean age = 17.1 years, SD = .67 years) and their 12-25 year old siblings born between 1988 and 2000 (mean age = 17.2 years, SD = 3.24 years). Body composition was measured, as well as physical fitness (standing jump, hand grip, sit-and reach flexibility, balance tests). Impulsiveness of the subjects was assessed by the delay discounting questionnaire. Regular voluntary exercise behavior was measured by a short lifestyle interview. While being equipped with a VU University Ambulatory Monitoring System (VU-AMS) and Cosmed device, the subjects performed two submaximal exercise tests and one maximal exercise test. The VU-AMS device records electrocardiogram (ECG) data and impedance cardiogram (ICG) data. The Cosmed device measures oxygen consumption (VO2) and carbon dioxide production (VCO2). VO2max (endurance capacity) was derived during the maximal exercise test. Before, during and after the exercise tests, subjects filled out the Activation-Deactivation Adjective Checklist (AD ACL), Feeling Scale (FS) and the Borg’s Rating of Perceived Exertion (RPE) at multiple time points. These questionnaires determined the subjects’ affective response to exercise. DNA was collected through buccal swabs to determine zygosity.
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	de Geus, Eco J. C. Vrije Universiteit Amsterdam Bartels, Meike Vrije Universiteit Amsterdam
Funding information	1R01DK092127-01 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI RO1DK-092127 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI 022.003.010 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI
References	Schutte, N. M. (2017). Unraveling the genetic components of voluntary exercise behavior in adolescents and young adults. https://research.vu.nl/en/publications/unraveling-the-genetic-components-of-voluntary-exercise-behavior-. ISBN: 9789463322126.
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	2012-01-01
End date wave collection	2014-01-01
Wave universe description	16.0 - 18.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	Schutte, Nienke M. Vrije Universiteit Amsterdam Nederend, Ineke Vrije Universiteit Amsterdam

YE_ATTEF2 Wave

Wave alternate title	Genetics of attention and executive functioning measurement 2 YE_ATTEF2
Short description of the wave	The YE_ATTEF2 project was the second measurement of a longitudinal study on the source of individual differences of cognition, attention, and executive functioning from preschool to young adulthood. This project included the measurement five years after baseline (YE_ATTEF1) among 12-year old twin pairs (mean age = 12.4 years, SD = 0.14 years) and their 8-16 year old siblings (mean age = 11.97 years, SD = 2.55 years), and additionally recruited new twin pairs and siblings of the twin pairs. Behavioral data were collected with surveys filled in by parents and teachers (Conners, Child Behavior Checklist (CBCL), Strengths and Weaknesses of ADHD symptoms and Normal behavior Scale (SWAN), Teacher Report Form (TRF)) or filled in by children themselves (Youth Self Report (YSR)). To measure pubertal development, children filled in the Tanner questionnaire. Neurocognitive abilities were assessed with computerized ANT tasks, Flanker, Simon and Stroop. IQ was assessed with WISC-R. DNA was collected to determine zygosity and for genotyping SNP’S at candidate gene loci. Saliva was collected to assess cortisol concentrations.
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Funding information	904-57-94 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI
References	Polderman, T. J. C. (2007). Genetics of Attention and Executive Functioning. https://research.vu.nl/en/publications/genetics-of-attention-and-executive-functioning. ISBN: 9789086590964.
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	2002-01-01
End date wave collection	2004-01-01
Wave universe description	12.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	Polderman, Tinca Vrije Universiteit Amsterdam

YC_ADHMRI Wave

Wave alternate title	MRI-based research into problem behaviors in twins YC_ADHMRI
Short description of the wave	In the ADHD-MRI project, the genetic and environmental influence on ADHD related neurobiological changes were investigated in monozygotic twins (mean age = 14.9 years, SD = 1.2 years) who were born between 1986 and 1993. Twins were selected based on their Child Behavior Checklist Attention Problems (CBCL-AP) scores obtained in the regular YNTR survey waves and divided into three groups: discordant pairs (one affected, one unaffected), concordant pairs (both affected) and control pairs (both unaffected). To determine the presence of ADHD, mothers of the participants were interviewed with the Diagnostic Interview Schedule for Children (DISC-IV). Additionally, they filled in two behavioral questionnaires (CBCL and Strengths and Weaknesses of ADHD Symptoms and Normal Behavior (SWAN)). The twins filled in the Youth Self Report (YSR). Based on the outcome of the interview and questionnaires, twin pairs that were found eligible for the MRI experiments were invited. Both structural and functional MRI (color-stroop and flanker tasks) were performed. DNA was collected to confirm zygosity.
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Funding information	MH58799-03 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Investigator Initiated Research Grant (R01) Funder award URI
References	Derks EM, Hudziak JJ, Dolan CV, Ferdinand RF, Boomsma DI. The relations between DISC-IV DSM diagnoses of ADHD and multi-informant CBCL-AP syndrome scores. Compr Psychiatry. 2006 Mar-Apr;47(2):116-22. doi: 10.1016/j.comppsych.2005.05.006. PMID: 16490569. Derks, E. M. (2006). Assessment and genetic aetiology of attention problems, hyperactivity, and related disorders. van 't Ent D, Lehn H, Derks EM, Hudziak JJ, Van Strien NM, Veltman DJ, De Geus EJ, Todd RD, Boomsma DI. A structural MRI study in monozygotic twins concordant or discordant for attention/hyperactivity problems: evidence for genetic and environmental heterogeneity in the developing brain. Neuroimage. 2007 Apr 15;35(3):1004-20. doi: 10.1016/j.neuroimage.2007.01.037. Epub 2007 Feb 8. PMID: 17346990; PMCID: PMC1939804. van 't Ent D, van Beijsterveldt CE, Derks EM, Hudziak JJ, Veltman DJ, Todd RD, Boomsma DI, De Geus EJ. Neuroimaging of response interference in twins concordant or discordant for inattention and hyperactivity symptoms. Neuroscience. 2009 Nov 24;164(1):16-29. doi: 10.1016/j.neuroscience.2009.01.056. Epub 2009 Feb 3. PMID: 19409224; PMCID: PMC2760677.
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	2003-01-01
End date wave collection	2007-01-01
Wave universe description	15.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	Derks, Eske M. Vrije Universiteit Amsterdam

YS_DT Wave

Wave alternate title	Discordant/Concordant Teacher Effects YS_DT
Short description of the wave	The YS_DT project was part of a study on the effects of having a male or female teacher on educational achievement in twins between 10 and 24 years old (mean age = 16.2 years, SD = 2.71 years) who were born between 1989 and 2003. The sample was selected from a group of twins whose primary school teacher had filled in the Teacher Report Form (TRF). Parents were asked to report, for all grades, whether the twins attended the same or separate classes and the gender of the teacher(s) of their children, and the Cito scores.
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Funding information	056-31-001 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI 0240-001-003 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI 481-08-011 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI 056-32-010 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI
References	de Zeeuw EL, van Beijsterveldt CEM, Glasner TJ, Bartels M, de Geus EJC, Boomsma DI. Do children perform and behave better at school when taught by same-gender teachers? Learning and Individual Differences. 2014;36:152-156. doi: 10.1016/j.lindif.2014.10.017 de Zeeuw, L. E. J. (2015). Educational Achievement in Children: Twinning, Teachers and Genes. https://research.vu.nl/en/publications/educational-achievement-in-children-twinning-teachers-and-genes. ISBN: 978-94-6259-562-0.
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	2011-01-01
End date wave collection	2013-01-01
Wave universe description	10.0 - 24.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	de Zeeuw, Eveline Vrije Universiteit Amsterdam

YE_COG12 Wave

Wave alternate title	Cognitive abilities of 12-year-old twins YE_COG12
Short description of the wave	The YE_COG12 project was the fourth measurement of a longitudinal study on the development of intelligence and problem behavior (waves one and two not included in this catalogue, wave 3: YE_COG10), and targeted 12-year old twins (mean age = 12 years, SD = 0.08 years) born between 1986 and 1988. Intelligence was measured by the Dutch version of the Wechsler Intelligence Scale for Children-Revised (WISC-R). Cortisol and testosterone levels were measured in saliva, which was collected on two consecutive days. Pubertal development was measured with the Tanner self-report scales. Behavioral data was collected with the Youth Self-Report (YSR).
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Funding information	575-25-012 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Funder award URI R 56-467 Funder identifier Identifier type URI https://ror.org/ Funder award title Funder award URI
References	Bartels, M. (2003). Behavior problems, cognition, and hormones: A longitudinal-genetic study in childhood. VU. https://research.vu.nl/en/publications/behavior-problems-cognition-and-hormones-a-longitudinal-genetic-s. ISBN: 9090164901, 9789090164908.
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	1998-01-01
End date wave collection	2000-01-01
Wave universe description	12.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	Bartels, Meike Vrije Universiteit Amsterdam

YE_COG18 Wave

Wave alternate title	Cognitive abilities of 18-year-old twins YE_COG18
Short description of the wave	The YE_COG18 project is the fifth measurement of a longitudinal study into the development of intelligence and problem behaviour (waves one and two not included in this catalogue, wave 3: YE_COG10, wave 4: YE_COG12), to which additional participants were recruited (twins with siblings and their parents). It targeted 18-year old twins (mean age = 18.1 years, SD = 0.5 years) born between 1986 and 1991, their 8-35 year old siblings (mean age = 18.8 years, SD = 4.9 years) born between 1970 and 1998, and their parents (mean age = 48.9 years, SD = 4.14 years) born between 1942 and 1965. The test protocol consisted of a physical part and a psychological part. Physical measurements included cardiovascular functioning (assessed with the VU-AMS device), a physical examination with basic anthropometric measurements and the collection of saliva, DNA and fingerprints. The psychological part consisted of a series of cognitive tests that measured the following abilities: intelligence (Wechsler Intelligence Scale for Children, WISC-R or Revised Amsterdamse Kinder Intelligentie Test, RAKIT); inhibition (Stroop); spontaneous production of words (Verbal fluency); verbal learning and memory (California Verbal Learning Task, CVLT); emotion recognition (Reading the mind in the eyes); perceptual speed (Π inspection time task); spatial short term memory (n-back task and Corsi block tapping task). Furthermore, some questionnaires were administered to the participants (Autism-Spectrum Quotient, Tanner self-report), mothers of the twins (Social Responsiveness Scale) and research assistants (Test Observation form).
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Funding information	56-464-14192 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Spinoza Prize Funder award URI
References	Hoekstra, R. A. (2007). Autistic traits, withdrawn behaviour and cognition: a longitudinal twin study from early childhood to young adulthood. https://research.vu.nl/en/publications/autistic-traits-withdrawn-behaviour-and-cognition-a-longitudinal-. Estourgie-van Burk, G. F. (2011). Variation in growth and the influence of early growth in later life: a twin-sibling study. https://research.vu.nl/en/publications/variation-in-growth-and-the-influence-of-early-growth-in-later-li. ISBN: 9789086595532.
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	2004-01-01
End date wave collection	2006-01-01
Wave universe description	18.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	Hoekstra, Rosa A. Vrije Universiteit Amsterdam Estourgie-van Burk, Frederiek Vrije Universiteit Amsterdam

YS_TRIP age 3 Wave

Wave alternate title	Triplet survey age 3 YS_TRIP
Short description of the wave	The Child Behavior Checklist (CBCL1.5-5) is sent to parents of approximately 3-year old triplets (mean age = 3.4 years, SD = 0.33 years), together with a short general questionnaire on parental and triplet characteristics (e.g. parental employment and religion, triplet school achievements and health).
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Funding information
References
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	1991-01-01
End date wave collection
Wave universe description	36 months
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys (up to 2020) have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	YNTR administration Vrije Universiteit Amsterdam

YS_TRIP age 4 Wave

Wave alternate title	Triplet survey age 4 YS_TRIP
Short description of the wave	The Child Behavior Checklist was sent to parents of approximately 4-year old triplets born between 1992 and 2005 (mean age = 4.9 years, SD = 0.60 years), together with a short general questionnaire on parental and triplet characteristics (e.g. parental employment and religion, triplet school achievements and health).
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Funding information
References
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	1998-01-01
End date wave collection	2011-01-01
Wave universe description	4.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	YNTR administration Vrije Universiteit Amsterdam

YS_TRIP age 5 Wave

Wave alternate title	Triplet survey age 5 YS_TRIP
Short description of the wave	The Child Behavior Checklist (CBCL6-18) is sent to parents of approximately 7-year old triplets (mean age = 7.5 years, SD = 0.75 years), together with a short general questionnaire on parental and triplet characteristics (e.g. parental employment and religion, triplet school achievements and health).
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Funding information
References
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	1991-01-01
End date wave collection
Wave universe description	5.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys (up to 2019) have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	YNTR administration Vrije Universiteit Amsterdam

YS_TRIP age 7 Wave

Wave alternate title	Triplet survey age 7 YS_TRIP
Short description of the wave	The Child Behavior Checklist (CBCL6-18) is sent to parents of approximately 7-year old triplets (mean age = 7.5 years, SD = 0.75 years), together with a short general questionnaire on parental and triplet characteristics (e.g. parental employment and religion, triplet school achievements and health).
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Funding information
References
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	1998-01-01
End date wave collection
Wave universe description	7.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys (up to 2019) have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	YNTR administration Vrije Universiteit Amsterdam

YS_TRIP age 10 Wave

Wave alternate title	Triplet survey age 10 YS_TRIP
Short description of the wave	The Child Behavior Checklist (CBCL6-18) is sent to parents of approximately 9 or 10-year old triplets (mean age = 10.1 years, SD = 0.64 years), together with a short general questionnaire on parental and triplet characteristics (e.g. parental employment and religion, triplet school achievements and health).
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Funding information
References
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	1998-01-01
End date wave collection
Wave universe description	9.0 - 10.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys (up to 2019) have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	YNTR administration Vrije Universiteit Amsterdam

YS_TRIP age 12 Wave

Wave alternate title	Triplet survey age 12 YS_TRIP
Short description of the wave	The Child Behavior Checklist (CBCL6-18) is sent to parents of approximately 12-year old triplets (mean age = 12.2 years, SD = 0.71 years), together with a short general questionnaire on parental and triplet characteristics (e.g. parental employment and religion, triplet school achievements and health).
Type of StudyUnit
Publisher	Vrije Universiteit Amsterdam
Creators	Boomsma, Dorret I. Vrije Universiteit Amsterdam
Funding information
References
(sub) cohort	NTR: Young Netherlands Twin Register
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	1998-01-01
End date wave collection
Wave universe description	12.0 years
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys (up to 2019) have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	YNTR administration Vrije Universiteit Amsterdam

You can also access this dataset using the API (see API Docs).

author	None
author_email	None
creator_user_id	34768773-4537-4d74-8d9d-11e2b32cbbaf
dc_additional_info	In NTR projects YC_DSC and YC_ADHMRI, mother-ratings were obtained via a telephone interview, and in NTR project YC_FITNSS, via a face-to-face interview.
dc_analysis_unit	{Individual,Family}
dc_cohort	NTR
id	d11bc9df-a44c-4901-b557-3259145c3784
isopen	False
license_title	None
maintainer	None
maintainer_email	None
metadata_created	2024-10-17T12:38:49.246000
metadata_modified	2024-10-20T12:51:11.109701
name	8e673435217f359df9cb46c6142a2d0c
notes	School situations contains questions about children's schoolgoing situation, including the type of school the children attend, whether twins attend the same or different school or class, whether the child has ever skipped or repeated grades, and truancy.
num_resources	0
num_tags	0
organization	{'id': '45b26247-5cc8-4bf1-a214-3efb773faa3a', 'name': 'ntr', 'title': 'Netherlands Twin Register', 'type': 'organization', 'description': 'The Netherlands Twin Register (NTR) consists of individuals who have agreed to participate in twin-family studies and was established and is managed by the Department of Biological Psychology, VU University Amsterdam (see: https://tweelingenregister.vu.nl/). The NTR was established in 1987 and has enrolled around 120.000 twins and a roughly equal number of their relatives. The majority of twin families have participated one or more times in survey studies on a host of epidemiological variables including social demography, personality, lifestyle, somatic and mental health, and subsamples took part in biomaterial collection (e.g. DNA) and dedicated projects for e.g. neuropsychological, biomarker, and behavioral traits. The recruitment into the NTR is fully inclusive without any restrictions on enrolment. The NTR is committed to actively seek the commitment of its participants to science and their continued involvement in NTR research by maintaining a website, electronic newsletters, and the MijnNTR portal that provides personalized feedback to participants. The NTR resources, e.g. the longitudinal phenotyping, the extended pedigree structures, and the multi-generation genotyping allow for future twin-family research that will contribute to gene discovery, causality modelling, and studies of genetic and cultural inheritance of behavioral traits and mental and physical health. In the CID data catalogue, only the NTR projects for children and adolescents (<18 years of age) have been included. This is refered to as the Young Netherlands Twin Register (YNTR).', 'image_url': 'https://data.individualdevelopment.nl/img/logo_ntr.png', 'created': '2024-10-17T13:43:56.356410', 'is_organization': True, 'approval_status': 'approved', 'state': 'active'}
owner_org	45b26247-5cc8-4bf1-a214-3efb773faa3a
private	False
state	active
title	School Situation
type	measure
cohort	[{'cohort_alternate_title': 'YNTR', 'cohort_description': 'The Young Netherlands Twin Register (YNTR) consists of projects within the Netherlands Twin Register (NTR) that involve families with twins or other multiples under the age of 18.', 'cohort_language': 'NL', 'cohort_purpose': 'The purpose of the projects within the Young Netherlands Twin Register focus on the role of heritability in mental and physical health. For instance, the NTR investigates why some people become more easily depressed than others, or why certain people get diabetes while others do not. Other research areas include lifestyle and habits that influence health and disease, such as smoking, drinking and exercise.', 'cohort_spatial_country_code': 'NL', 'cohort_spatial_highest_reference': 'country', 'cohort_spatial_lowest_reference': 'postal code', 'cohort_time_method': 'Longitudinal.CohortEventBased', 'cohort_title': 'NTR: Young Netherlands Twin Register', 'cohort_universe': 'Families with twins or other multiples under the age of 18.', 'cohort_contributor': [{'cohort_contributor': 'YNTR administration', 'cohort_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'cohort_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'cohort_contributor_affiliation_identifier_scheme': 'ROR', 'cohort_contributor_affiliation_identifier_schemeuri': 'https://ror.org/'}], 'cohort_creator': [{'cohort_creator_affiliation': 'Vrije Universiteit Amsterdam', 'cohort_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'cohort_creator_affiliation_identifier_scheme': 'ROR', 'cohort_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'cohort_creator_identifier_schemeuri': 'https://orcid.org/', 'cohort_creator_identifier_type': 'ORCID', 'cohort_creator_name': 'Boomsma, Dorret I.', 'cohort_creator_pid': '0000-0002-7099-7972'}], 'cohort_funding': [{'cohort_funder': 'Dutch Research Council', 'cohort_funder_identifier': 'https://ror.org/04jsz6e67', 'cohort_funder_identifier_schemuri': 'https://ror.org/', 'cohort_funder_identifier_type': 'ROR', 'cohort_grant_number': '480-15-001/674'}, {'cohort_funder': 'Dutch Research Council', 'cohort_funder_identifier': 'https://ror.org/04jsz6e67', 'cohort_funder_identifier_schemuri': 'https://ror.org/', 'cohort_funder_identifier_type': 'ROR', 'cohort_grant_number': '575-25-006'}, {'cohort_funder': 'Dutch Research Council', 'cohort_funder_identifier': 'https://ror.org/04jsz6e67', 'cohort_funder_identifier_schemuri': 'https://ror.org/', 'cohort_funder_identifier_type': 'ROR', 'cohort_grant_number': '480-04-004'}, {'cohort_funder': 'Dutch Research Council', 'cohort_funder_identifier': 'https://ror.org/04jsz6e67', 'cohort_funder_identifier_schemuri': 'https://ror.org/', 'cohort_funder_identifier_type': 'ROR', 'cohort_grant_number': '911-09-032'}], 'cohort_publisher': [{'cohort_publisher_identifier': 'https://ror.org/008xxew50', 'cohort_publisher_identifier_type': 'ROR', 'cohort_publisher_name': 'Vrije Universiteit Amsterdam'}], 'cohort_references': [{'cohort_reference_citation': 'Boomsma DI, de Geus EJ, Vink JM, Stubbe JH, Distel MA, Hottenga JJ, Posthuma D, van Beijsterveldt TC, Hudziak JJ, Bartels M, Willemsen G. Netherlands Twin Register: from twins to twin families. Twin Res Hum Genet. 2006 Dec;9(6):849-57. doi: 10.1375/183242706779462426. PMID: 17254420.', 'cohort_reference_identifier': 'https://doi.org/10.1375/183242706779462426', 'cohort_reference_identifier_type': 'DOI', 'cohort_reference_type': 'IsDescribedBy'}, {'cohort_reference_citation': 'Boomsma DI, Willemsen G, Vink JM, Bartels M, Groot P, Hottenga JJ, van Beijsterveldt CE, Stroet T, van Dijk R, Wertheim R, Visser M, van der Kleij F. Design and implementation of a twin-family database for behavior genetics and genomics studies. Twin Res Hum Genet. 2008 Jun;11(3):342-8. doi: 10.1375/twin.11.3.342. PMID: 18498212.', 'cohort_reference_identifier': 'https://doi.org/10.1375/twin.11.3.342', 'cohort_reference_identifier_type': 'DOI', 'cohort_reference_type': 'IsDescribedBy'}, {'cohort_reference_citation': 'van Beijsterveldt CE, Groen-Blokhuis M, Hottenga JJ, Franić S, Hudziak JJ, Lamb D, Huppertz C, de Zeeuw E, Nivard M, Schutte N, Swagerman S, Glasner T, van Fulpen M, Brouwer C, Stroet T, Nowotny D, Ehli EA, Davies GE, Scheet P, Orlebeke JF, Kan KJ, Smit D, Dolan CV, Middeldorp CM, de Geus EJ, Bartels M, Boomsma DI. The Young Netherlands Twin Register (YNTR): longitudinal twin and family studies in over 70,000 children. Twin Res Hum Genet. 2013 Feb;16(1):252-67. doi: 10.1017/thg.2012.118. Epub 2012 Nov 28. PMID: 23186620.', 'cohort_reference_identifier': 'https://doi.org/10.1017/thg.2012.118', 'cohort_reference_identifier_type': 'DOI', 'cohort_reference_type': 'IsDescribedBy'}, {'cohort_reference_citation': "Ligthart L, van Beijsterveldt CEM, Kevenaar ST, de Zeeuw E, van Bergen E, Bruins S, Pool R, Helmer Q, van Dongen J, Hottenga JJ, Van't Ent D, Dolan CV, Davies GE, Ehli EA, Bartels M, Willemsen G, de Geus EJC, Boomsma DI. The Netherlands Twin Register: Longitudinal Research Based on Twin and Twin-Family Designs. Twin Res Hum Genet. 2019 Dec;22(6):623-636. doi: 10.1017/thg.2019.93. Epub 2019 Oct 31. PMID: 31666148.", 'cohort_reference_identifier': 'https://doi.org/10.1017/thg.2019.93', 'cohort_reference_identifier_type': 'DOI', 'cohort_reference_type': 'IsDescribedBy'}]}]
dc_DOI	[{'dc_identifier_type': 'DOI', 'dc_pid': '10.60641/x6s1-fb73'}]
dc_constructs	[{'dc_construct': 'work and school'}]
dc_labels	[{'dc_label': 'class composition'}, {'dc_label': 'demographics'}, {'dc_label': 'education'}, {'dc_label': 'school'}, {'dc_label': 'truancy'}]
dc_modes_of_collection	[{'dc_mode_of_collection': 'SelfAdministeredQuestionnaire'}]
measure_age_range	[{'measure_age_month': 36}, {'measure_age_month': 48}, {'measure_age_month': 60}, {'measure_age_month': 84}, {'measure_age_month': 108}, {'measure_age_month': 109}, {'measure_age_month': 110}, {'measure_age_month': 111}, {'measure_age_month': 112}, {'measure_age_month': 113}, {'measure_age_month': 114}, {'measure_age_month': 115}, {'measure_age_month': 116}, {'measure_age_month': 117}, {'measure_age_month': 118}, {'measure_age_month': 119}, {'measure_age_month': 120}, {'measure_age_month': 121}, {'measure_age_month': 122}, {'measure_age_month': 123}, {'measure_age_month': 124}, {'measure_age_month': 125}, {'measure_age_month': 126}, {'measure_age_month': 127}, {'measure_age_month': 128}, {'measure_age_month': 129}, {'measure_age_month': 130}, {'measure_age_month': 131}, {'measure_age_month': 132}, {'measure_age_month': 133}, {'measure_age_month': 134}, {'measure_age_month': 135}, {'measure_age_month': 136}, {'measure_age_month': 137}, {'measure_age_month': 138}, {'measure_age_month': 139}, {'measure_age_month': 140}, {'measure_age_month': 141}, {'measure_age_month': 142}, {'measure_age_month': 143}, {'measure_age_month': 144}, {'measure_age_month': 145}, {'measure_age_month': 146}, {'measure_age_month': 147}, {'measure_age_month': 148}, {'measure_age_month': 149}, {'measure_age_month': 150}, {'measure_age_month': 151}, {'measure_age_month': 152}, {'measure_age_month': 153}, {'measure_age_month': 154}, {'measure_age_month': 155}, {'measure_age_month': 156}, {'measure_age_month': 157}, {'measure_age_month': 158}, {'measure_age_month': 159}, {'measure_age_month': 160}, {'measure_age_month': 161}, {'measure_age_month': 162}, {'measure_age_month': 163}, {'measure_age_month': 164}, {'measure_age_month': 165}, {'measure_age_month': 166}, {'measure_age_month': 167}, {'measure_age_month': 168}, {'measure_age_month': 169}, {'measure_age_month': 170}, {'measure_age_month': 171}, {'measure_age_month': 172}, {'measure_age_month': 173}, {'measure_age_month': 174}, {'measure_age_month': 175}, {'measure_age_month': 176}, {'measure_age_month': 177}, {'measure_age_month': 178}, {'measure_age_month': 179}, {'measure_age_month': 180}, {'measure_age_month': 181}, {'measure_age_month': 182}, {'measure_age_month': 183}, {'measure_age_month': 184}, {'measure_age_month': 185}, {'measure_age_month': 186}, {'measure_age_month': 187}, {'measure_age_month': 188}, {'measure_age_month': 189}, {'measure_age_month': 190}, {'measure_age_month': 191}, {'measure_age_month': 192}, {'measure_age_month': 193}, {'measure_age_month': 194}, {'measure_age_month': 195}, {'measure_age_month': 196}, {'measure_age_month': 197}, {'measure_age_month': 198}, {'measure_age_month': 199}, {'measure_age_month': 200}, {'measure_age_month': 201}, {'measure_age_month': 202}, {'measure_age_month': 203}, {'measure_age_month': 204}, {'measure_age_month': 205}, {'measure_age_month': 206}, {'measure_age_month': 207}, {'measure_age_month': 208}, {'measure_age_month': 209}, {'measure_age_month': 210}, {'measure_age_month': 211}, {'measure_age_month': 212}, {'measure_age_month': 213}, {'measure_age_month': 214}, {'measure_age_month': 215}, {'measure_age_month': 216}, {'measure_age_month': 217}, {'measure_age_month': 218}, {'measure_age_month': 219}, {'measure_age_month': 220}, {'measure_age_month': 221}, {'measure_age_month': 222}, {'measure_age_month': 223}, {'measure_age_month': 224}, {'measure_age_month': 225}, {'measure_age_month': 226}, {'measure_age_month': 227}, {'measure_age_month': 228}, {'measure_age_month': 229}, {'measure_age_month': 230}, {'measure_age_month': 231}, {'measure_age_month': 232}, {'measure_age_month': 233}, {'measure_age_month': 234}, {'measure_age_month': 235}, {'measure_age_month': 236}, {'measure_age_month': 237}, {'measure_age_month': 238}, {'measure_age_month': 239}, {'measure_age_month': 240}, {'measure_age_month': 241}, {'measure_age_month': 242}, {'measure_age_month': 243}, {'measure_age_month': 244}, {'measure_age_month': 245}, {'measure_age_month': 246}, {'measure_age_month': 247}, {'measure_age_month': 248}, {'measure_age_month': 249}, {'measure_age_month': 250}, {'measure_age_month': 251}, {'measure_age_month': 252}, {'measure_age_month': 253}, {'measure_age_month': 254}, {'measure_age_month': 255}, {'measure_age_month': 256}, {'measure_age_month': 257}, {'measure_age_month': 258}, {'measure_age_month': 259}, {'measure_age_month': 260}, {'measure_age_month': 261}, {'measure_age_month': 262}, {'measure_age_month': 263}, {'measure_age_month': 264}, {'measure_age_month': 265}, {'measure_age_month': 266}, {'measure_age_month': 267}, {'measure_age_month': 268}, {'measure_age_month': 269}, {'measure_age_month': 270}, {'measure_age_month': 271}, {'measure_age_month': 272}, {'measure_age_month': 273}, {'measure_age_month': 274}, {'measure_age_month': 275}, {'measure_age_month': 276}, {'measure_age_month': 277}, {'measure_age_month': 278}, {'measure_age_month': 279}, {'measure_age_month': 280}, {'measure_age_month': 281}, {'measure_age_month': 282}, {'measure_age_month': 283}, {'measure_age_month': 284}, {'measure_age_month': 285}, {'measure_age_month': 286}, {'measure_age_month': 287}, {'measure_age_month': 288}]
study	[{'study_alternate_title': 'NTR', 'study_language': 'NL', 'study_purpose': 'The research carried out by the Netherlands Twin Register focuses on the role of heritability in mental and physical health. For instance, the NTR investigates why some people become more easily depressed than others, or why certain people get diabetes while others do not. Other research areas include lifestyle and habits that influence health and disease, such as smoking, drinking and exercise.', 'study_time_method': 'Longitudinal', 'study_universe': 'The recruitment into the NTR is fully inclusive without any restrictions on enrolment. In the CID data catalogue, only the NTR projects for children and adolescents (<18 years of age) have been included. This is refered to as the Young Netherlands Twin Register (YNTR). ', 'title': 'Netherlands Twin Register', 'study_contact': [{'study_contact_affiliation': 'Vrije Universiteit Amsterdam', 'study_contact_mail': 'ntr.datamanagement.fgb@vu.nl', 'study_contact_name': 'NTR Data Management'}], 'study_contributor': [{'study_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'study_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'study_contributor_affiliation_identifier_scheme': 'ROR', 'study_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'study_contributor_name': 'YNTR administration'}], 'study_data_access': [{'study_data_access_URL': 'https://ntr-data-request.psy.vu.nl/', 'study_data_access_description': 'Researchers with an approved data sharing request who abide by the rules of the European General Data Protection Regulation can receive temporary access to the NTR data for their own research projects.'}], 'study_funding': [{'study_funder': 'Dutch Research Council', 'study_funder_identifier': 'https://ror.org/04jsz6e67', 'study_funder_identifier_schemuri': 'https://ror.org/', 'study_funder_identifier_type': 'ROR', 'study_grant_number': '480-15-001/674'}, {'study_funder': 'Dutch Research Council', 'study_funder_identifier': 'https://ror.org/04jsz6e67', 'study_funder_identifier_schemuri': 'https://ror.org/', 'study_funder_identifier_type': 'ROR', 'study_grant_number': '575-25-006'}, {'study_funder': 'Dutch Research Council', 'study_funder_identifier': 'https://ror.org/04jsz6e67', 'study_funder_identifier_schemuri': 'https://ror.org/', 'study_funder_identifier_type': 'ROR', 'study_grant_number': '480-04-004'}, {'study_funder': 'Dutch Research Council', 'study_funder_identifier': 'https://ror.org/04jsz6e67', 'study_funder_identifier_schemuri': 'https://ror.org/', 'study_funder_identifier_type': 'ROR', 'study_grant_number': '911-09-032'}], 'study_principal_investigators': [{'study_pi_affiliation': 'Vrije Universiteit Amsterdam', 'study_pi_affiliation_identifier': 'https://ror.org/008xxew50', 'study_pi_affiliation_identifier_scheme': 'ROR', 'study_pi_affiliation_identifier_schemeuri': 'https://ror.org/', 'study_pi_identifier_schemeuri': 'https://orcid.org/', 'study_pi_identifier_type': 'ORCID', 'study_pi_name': 'Boomsma, Dorret I.', 'study_pi_pid': '0000-0002-7099-7972'}], 'study_publisher': [{'study_publisher_identifier': 'https://ror.org/008xxew50', 'study_publisher_identifier_schemeuri': 'https://ror.org/', 'study_publisher_identifier_type': 'ROR', 'study_publisher_name': 'Vrije Universiteit Amsterdam'}], 'study_references': [{'study_reference_citation': 'Boomsma DI, de Geus EJ, Vink JM, Stubbe JH, Distel MA, Hottenga JJ, Posthuma D, van Beijsterveldt TC, Hudziak JJ, Bartels M, Willemsen G. Netherlands Twin Register: from twins to twin families. Twin Res Hum Genet. 2006 Dec;9(6):849-57. doi: 10.1375/183242706779462426. PMID: 17254420.', 'study_reference_identifier': 'https://doi.org/10.1375/183242706779462426', 'study_reference_identifier_type': 'DOI', 'study_reference_type': 'IsDescribedBy'}, {'study_reference_citation': 'Boomsma DI, Willemsen G, Vink JM, Bartels M, Groot P, Hottenga JJ, van Beijsterveldt CE, Stroet T, van Dijk R, Wertheim R, Visser M, van der Kleij F. Design and implementation of a twin-family database for behavior genetics and genomics studies. Twin Res Hum Genet. 2008 Jun;11(3):342-8. doi: 10.1375/twin.11.3.342. PMID: 18498212.', 'study_reference_identifier': 'https://doi.org/10.1375/twin.11.3.342', 'study_reference_identifier_type': 'DOI', 'study_reference_type': 'IsDescribedBy'}, {'study_reference_citation': 'van Beijsterveldt CE, Groen-Blokhuis M, Hottenga JJ, Franić S, Hudziak JJ, Lamb D, Huppertz C, de Zeeuw E, Nivard M, Schutte N, Swagerman S, Glasner T, van Fulpen M, Brouwer C, Stroet T, Nowotny D, Ehli EA, Davies GE, Scheet P, Orlebeke JF, Kan KJ, Smit D, Dolan CV, Middeldorp CM, de Geus EJ, Bartels M, Boomsma DI. The Young Netherlands Twin Register (YNTR): longitudinal twin and family studies in over 70,000 children. Twin Res Hum Genet. 2013 Feb;16(1):252-67. doi: 10.1017/thg.2012.118. Epub 2012 Nov 28. PMID: 23186620.', 'study_reference_identifier': 'https://doi.org/10.1017/thg.2012.118', 'study_reference_identifier_type': 'DOI', 'study_reference_type': 'IsDescribedBy'}, {'study_reference_citation': "Ligthart L, van Beijsterveldt CEM, Kevenaar ST, de Zeeuw E, van Bergen E, Bruins S, Pool R, Helmer Q, van Dongen J, Hottenga JJ, Van't Ent D, Dolan CV, Davies GE, Ehli EA, Bartels M, Willemsen G, de Geus EJC, Boomsma DI. The Netherlands Twin Register: Longitudinal Research Based on Twin and Twin-Family Designs. Twin Res Hum Genet. 2019 Dec;22(6):623-636. doi: 10.1017/thg.2019.93. Epub 2019 Oct 31. PMID: 31666148.", 'study_reference_identifier': 'https://doi.org/10.1017/thg.2019.93', 'study_reference_identifier_type': 'DOI', 'study_reference_type': 'IsDescribedBy'}, {'study_reference_citation': 'Bartels M, van Beijsterveldt CE, Derks EM, Stroet TM, Polderman TJ, Hudziak JJ, Boomsma DI. Young Netherlands Twin Register (Y-NTR): a longitudinal multiple informant study of problem behavior. Twin Res Hum Genet. 2007 Feb;10(1):3-11. doi: 10.1375/twin.10.1.3.PMID: 17539360.', 'study_reference_identifier': 'https://doi.org/10.1375/twin.10.1.3', 'study_reference_identifier_type': 'DOI', 'study_reference_type': 'IsDescribedBy'}, {'study_reference_citation': 'Boomsma DI, Orlebeke JF, van Baal GC.Behav Genet. The Dutch Twin Register: growth data on weight and height. 1992 Mar;22(2):247-51. doi: 10.1007/BF01067004', 'study_reference_identifier': 'https://doi.org/10.1007/BF01067004', 'study_reference_identifier_type': 'DOI', 'study_reference_type': 'IsDescribedBy'}, {'study_reference_citation': 'Franić S, Dolan CV, van Beijsterveldt CE, Hulshoff Pol HE, Bartels M, Boomsma DI. Genetic and environmental stability of intelligence in childhood and adolescence. Twin Res Hum Genet. 2014 Jun;17(3):151-63. doi: 10.1017/thg.2014.', 'study_reference_identifier': 'https://doi.org/10.1017/thg.2014', 'study_reference_identifier_type': 'DOI', 'study_reference_type': 'IsDescribedBy'}]}]
wave	[{'wave_alternate_title': 'YNTR survey age 5 [YS_5]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The YS_5 survey is sent to the mothers around the 5th birth year of the twins (mean age = 5.52 years, SD = 0.55 years). The survey includes items on child care and school, growth, zygosity, toilet training, asthma and eczema, fine motor coordination, language development, and problem behaviors as assessed by a short version of the Devereux Child Behavior Checklist (DCB). The booklet includes an extra section for fathers of twins to report about behavior problems. From 2011 onward, items on child care and school, living and family situation were updated and items on wellbeing were added. From the second half of 2015 the short form of the Childhood Behavior Questionnaire (CBQ) was added. From 2017 the surveys no longer have a separate section for the father.', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys (up to 2017) have been scanned. All data are digitally archived. ', 'wave_start_date_collection': '1994-01-01', 'wave_title': 'YS_5', 'wave_universe': '60', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_name': 'YNTR administration'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_subject_codes': [{'wave_subject_code': 'MC', 'wave_subject_code_translated': 'Mother (biological or non-biological) on Child'}]}, {'wave_alternate_title': 'YNTR teacher survey age 5 [YS_TRF5]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'In the YS_TRF5 project, teacher data were collected in 2 sub-groups of 5-year-old twins (mean age = 5.66 years, SD = 0.31 years) born in 1990/1991 and in 2002/2003, and their 6-12 year old siblings (mean age = 8.00 years, SD = 1.17 years) born between 1995-2004. One subgroup was part of the study YE_ATTEF1 (Polderman et al., 2006) and one was for a try-out study in 2008. The survey for the primary school teachers includes items on the teacher, class and school, functioning of the child, school performance, and standardized questionnaires on problem behavior, namely the Teacher Report Form (TRF), and the short version of the Conners’ Teacher Ratings Scale - Revised (CTRS-R).', 'wave_end_date_collection': '2008-01-01', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys have been scanned. All data digitally archived. ', 'wave_start_date_collection': '1996-01-01', 'wave_title': 'YS_TRF5', 'wave_universe': '60', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': '', 'wave_contributor_identifier_type': '', 'wave_contributor_name': 'YNTR administration', 'wave_contributor_pid': ''}, {'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': 'Polderman, Tinca J. C.', 'wave_contributor_pid': '0000-0001-5564-301X'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}], 'wave_funding': [{'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '481-08-011'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_references': [{'wave_references_citation': 'Polderman TJ, Posthuma D, De Sonneville LM, Verhulst FC, Boomsma DI. Genetic analyses of teacher ratings of problem behavior in 5-year-old twins. Twin Res Hum Genet. 2006 Feb;9(1):122-30. doi: 10.1375/183242706776402975. PMID: 16611477.', 'wave_references_identifier': 'https://doi.org/10.1375/183242706776402975', 'wave_references_identifier_type': 'DOI', 'wave_references_type': 'IsDescribedBy'}, {'wave_references_citation': "Boomsma, D.I., Bartels, M., de Geus, J.C.N. , van Beijsterveldt, C.E.M. (2013) Teacher Report Forms (TRF) and Conners' Teacher Rating Scale (short version - Revised) in twins and siblings registered with the Netherlands Twin Registry (NTR). DANS Data Station Social Sciences and Humanities, V2, https://doi.org/10.17026/dans-xbh-p5ht.", 'wave_references_identifier': 'https://doi.org/10.17026/dans-xbh-p5ht', 'wave_references_identifier_type': 'DOI', 'wave_references_type': 'HasPart'}], 'wave_subject_codes': [{'wave_subject_code': 'TC', 'wave_subject_code_translated': 'Teacher/tutor on Child'}]}, {'wave_alternate_title': 'YNTR survey age 7 [YS_7]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The YS_7 survey collects information on the twins at age 7 (mean age = 7.47 years, SD = 0.40 years) from both parents and targets the development of emotional and behavior problems, as assessed by the Child Behavior Checklist 6-18 (CBCL). From 2001 onwards, the Conners’ Parent Rating Scale - Revised (CPRS-R) was also included. In addition, these surveys included items on zygosity, medical conditions, vaccinations, tonsillectomy (from 2005), demographic characteristics, growth, sport and leisure activity of both children and parents, and additional items on wellbeing (from 2010). In 2017 the survey was considerably shortened (for example the Conners was removed).', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys (up to 2017) have been scanned. All data digitally archived. ', 'wave_start_date_collection': '1995-01-01', 'wave_title': 'YS_7', 'wave_universe': '84', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_name': 'YNTR administration'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}], 'wave_funding': [{'wave_grant_number': '165'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_references': [{'wave_references_citation': 'Boomsma DI, Willemsen G, Vink JM, Bartels M, Groot P, Hottenga JJ, van Beijsterveldt CE, Stroet T, van Dijk R, Wertheim R, Visser M, van der Kleij F. Design and implementation of a twin-family database for behavior genetics and genomics studies. Twin Res Hum Genet. 2008 Jun;11(3):342-8. doi: 10.1375/twin.11.3.342. PMID: 18498212.', 'wave_references_identifier': 'https://doi.org/10.1375/twin.11.3.342', 'wave_references_identifier_type': 'DOI', 'wave_references_type': 'IsDescribedBy'}, {'wave_references_citation': "van der Valk, J. C. (2001). The Genetic and Environmental Contributions to Children's Problem Behaviors: A Developmental Approach. https://research.vu.nl/en/publications/the-genetic-and-environmental-contributions-to-childrens-problem-. ISBN: 90-9014842-6.", 'wave_references_identifier': 'https://hdl.handle.net/1871.1/fa5d1334-9353-476a-aca6-8c2d5a33e8eb', 'wave_references_identifier_type': 'Handle', 'wave_references_type': 'IsDescribedBy'}], 'wave_subject_codes': [{'wave_subject_code': 'MC', 'wave_subject_code_translated': 'Mother (biological or non-biological) on Child'}, {'wave_subject_code': 'FC', 'wave_subject_code_translated': 'Father (biological or non-biological) on Child'}]}, {'wave_alternate_title': 'YNTR teacher survey age 7 [YS_TRF7]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The YS_TRF7 survey for primary school teachers includes items on the teacher, class and school, functioning of the child, school performance, bullying and victimization (from 2010), and standardized questionnaires on problem behavior, namely the Teacher Report Form (TRF), the short version of the Conners’ Teacher Ratings Scale - Revised (CTRS-R), and the Social Skills Rating System (SSRS) (from 2017). Parents of twins that are approximately 7 years old (in 2009 age 6; mean age = 6.91 years, SD = 0.52 years) born in or after 1992, are contacted to ask for their permission to approach the teacher(s). From 2006 onwards, the consent to approach a teacher was extended to the non-twin siblings (6-12 years; mean age = 9.4 years, SD = 1.47 years) of their twins, and from 2009 with consent for triplets.', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys (up to 2012) have been scanned. All data digitally archived. ', 'wave_start_date_collection': '1999-01-01', 'wave_title': 'YS_TRF7', 'wave_universe': '84', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': '', 'wave_contributor_identifier_type': '', 'wave_contributor_name': 'YNTR administration', 'wave_contributor_pid': ''}, {'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': 'de Zeeuw, Eveline L.', 'wave_contributor_pid': '0000-0001-9042-7419'}, {'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': 'Kevenaar, Sofieke T.', 'wave_contributor_pid': '0000-0003-1795-3580'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}], 'wave_funding': [{'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '056-31-001'}, {'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '0240-001-003'}, {'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '481-08-011'}, {'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '056-32-010'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_references': [{'wave_references_citation': 'de Zeeuw, L. E. J. (2015). Educational Achievement in Children: Twinning, Teachers and Genes. https://research.vu.nl/en/publications/educational-achievement-in-children-twinning-teachers-and-genes. ISBN: 978-94-6259-562-0.', 'wave_references_identifier': 'https://hdl.handle.net/1871/52459', 'wave_references_identifier_type': 'Handle', 'wave_references_type': 'IsDescribedBy'}, {'wave_references_citation': 'de Zeeuw EL, van Beijsterveldt CE, de Geus EJ, Boomsma DI. Twin specific risk factors in primary school achievements. Twin Res Hum Genet. 2012 Feb;15(1):107-15. doi: 10.1375/twin.15.1.107. PMID: 22784460.', 'wave_references_identifier': 'https://doi.org/10.1375/twin.15.1.107', 'wave_references_identifier_type': 'DOI', 'wave_references_type': 'IsDescribedBy'}, {'wave_references_citation': "Boomsma, D.I., Bartels, M., de Geus, J.C.N. , van Beijsterveldt, C.E.M. (2013) Teacher Report Forms (TRF) and Conners' Teacher Rating Scale (short version - Revised) in twins and siblings registered with the Netherlands Twin Registry (NTR). DANS Data Station Social Sciences and Humanities, V2, https://doi.org/10.17026/dans-xbh-p5ht.", 'wave_references_identifier': 'https://doi.org/10.17026/dans-xbh-p5ht', 'wave_references_identifier_type': 'DOI', 'wave_references_type': 'HasPart'}], 'wave_subject_codes': [{'wave_subject_code': 'TC', 'wave_subject_code_translated': 'Teacher/tutor on Child'}]}, {'wave_alternate_title': 'YNTR survey age 9/10 [YS_10]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The YNTR survey 9/10 targets the development of emotional and behavior problems in 9-10 year old twins (mean age = 9.9 years, SD = 0.52 years), as assessed by the Child Behavior Checklist 6-18 (CBCL). From 2001 onwards, the Conners’ Parent Rating Scale - Revised (CPRS-R) was also included. In addition, these surveys included items on zygosity, medical conditions, vaccinations, tonsillectomy (from 2005), demographic characteristics, growth, sport and leisure activity of both children and parents, and additional items on wellbeing (from 2010).', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys (up to 2017) have been scanned. All data digitally archived. ', 'wave_start_date_collection': '1997-01-01', 'wave_title': 'YS_10', 'wave_universe': '108-120', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_name': 'YNTR administration'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_references': [{'wave_references_citation': 'Boomsma DI, Willemsen G, Vink JM, Bartels M, Groot P, Hottenga JJ, van Beijsterveldt CE, Stroet T, van Dijk R, Wertheim R, Visser M, van der Kleij F. Design and implementation of a twin-family database for behavior genetics and genomics studies. Twin Res Hum Genet. 2008 Jun;11(3):342-8. doi: 10.1375/twin.11.3.342. PMID: 18498212.', 'wave_references_identifier': 'https://doi.org/10.1375/twin.11.3.342', 'wave_references_identifier_type': 'DOI', 'wave_references_type': 'IsDescribedBy'}], 'wave_subject_codes': [{'wave_subject_code': 'MC', 'wave_subject_code_translated': 'Mother (biological or non-biological) on Child'}, {'wave_subject_code': 'FC', 'wave_subject_code_translated': 'Father (biological or non-biological) on Child'}]}, {'wave_alternate_title': 'YNTR teacher survey age 9/10 [YS_TRF10]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The YS_TRF10 survey for primary school teachers includes items on the teacher, class and school, functioning of the child, school performance, bullying and victimization (from 2010), and standardized questionnaires on problem behavior, namely the Teacher Report Form (TRF), the short version of the Conners’ Teacher Ratings Scale - Revised (CTRS-R), and the Social Skills Rating System (SSRS) (from 2017). Parents of twins that are approximately 9 (until 2009 age 10; mean age = 9.27 years, SD = .69 years) are contacted to ask for their permission to approach the teacher(s). From 2006 onwards, the consent to approach a teacher was extended to the non-twin siblings (6-12 years; mean age = 9.78 years, SD = 2.19 years) of their twins, and from 2009 with consent for triplets. ', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys (up to 2012) have been scanned. All data digitally archived. ', 'wave_start_date_collection': '1999-01-01', 'wave_title': 'YS_TRF10', 'wave_universe': '108-120', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': '', 'wave_contributor_identifier_type': '', 'wave_contributor_name': 'YNTR administration', 'wave_contributor_pid': ''}, {'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': 'de Zeeuw, Eveline L.', 'wave_contributor_pid': '0000-0001-9042-7419'}, {'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': 'Kevenaar, Sofieke T.', 'wave_contributor_pid': '0000-0003-1795-3580'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}], 'wave_funding': [{'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '056-31-001'}, {'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '0240-001-003'}, {'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '481-08-011'}, {'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '056-32-010'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_references': [{'wave_references_citation': 'de Zeeuw, L. E. J. (2015). Educational Achievement in Children: Twinning, Teachers and Genes. https://research.vu.nl/en/publications/educational-achievement-in-children-twinning-teachers-and-genes. ISBN: 978-94-6259-562-0.', 'wave_references_identifier': 'https://hdl.handle.net/1871/52459', 'wave_references_identifier_type': 'Handle', 'wave_references_type': 'IsDescribedBy'}, {'wave_references_citation': 'de Zeeuw EL, van Beijsterveldt CE, de Geus EJ, Boomsma DI. Twin specific risk factors in primary school achievements. Twin Res Hum Genet. 2012 Feb;15(1):107-15. doi: 10.1375/twin.15.1.107. PMID: 22784460.', 'wave_references_identifier': 'https://doi.org/10.1375/twin.15.1.107', 'wave_references_identifier_type': 'DOI', 'wave_references_type': 'IsDescribedBy'}, {'wave_references_citation': "Boomsma, D.I., Bartels, M., de Geus, J.C.N. , van Beijsterveldt, C.E.M. (2013) Teacher Report Forms (TRF) and Conners' Teacher Rating Scale (short version - Revised) in twins and siblings registered with the Netherlands Twin Registry (NTR). DANS Data Station Social Sciences and Humanities, V2, https://doi.org/10.17026/dans-xbh-p5ht.", 'wave_references_identifier': 'https://doi.org/10.17026/dans-xbh-p5ht', 'wave_references_identifier_type': 'DOI', 'wave_references_type': 'HasPart'}], 'wave_subject_codes': [{'wave_subject_code': 'TC', 'wave_subject_code_translated': 'Teacher/tutor on Child'}]}, {'wave_alternate_title': 'YNTR survey age 12 [YS_12]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': "The YNTR survey 12 was emailed to both parents of twins around the 12th birthday of the twins (mean age = 12.35 years, SD = 0.53 years). The survey targets the development of emotional and behavior problems as assessed by the Child Behavior Checklist 6-18 (CBCL). From 2001 onwards, the Conners’ Parent Rating Scale - Revised (CPRS-R) was also included. In addition, these surveys included items on zygosity, medical conditions, demographic characteristics, growth, sport and leisure activity of both children and parents (from 2003), and additional items on wellbeing (from 2008). In 2017 and 2018 the length of the questionnaire was shortened, the ASEBA Brief Problem Monitor (BPM) was used instead of the CBCL, and the 'cito survey' was added (see YS_CITO). From 2019, the questionnaire returned to its original length with CBCL and Conners items, and from 2020 the items on leisure time and on family and living situation were removed.", 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys (up to 2017) have been scanned. All data digitally archived. ', 'wave_start_date_collection': '1998-01-01', 'wave_title': 'YS_12', 'wave_universe': '144', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_name': 'YNTR administration'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_subject_codes': [{'wave_subject_code': 'MC', 'wave_subject_code_translated': 'Mother (biological or non-biological) on Child'}, {'wave_subject_code': 'FC', 'wave_subject_code_translated': 'Father (biological or non-biological) on Child'}]}, {'wave_alternate_title': 'YNTR teacher survey age 12 [YS_TRF12]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The YS_TRF12 survey for primary school teachers includes items on the teacher, class and school, functioning of the child, school performance, bullying and victimization (from 2010), and standardized questionnaires on problem behavior, namely the Teacher Report Form (TRF), the short version of the Conners’ Teacher Ratings Scale - Revised (CTRS-R), and the Social Skills Rating System (SSRS) (from 2017). Parents of twins that are approximately 12 (mean age = 12.13 years, SD = 0.30 years) are contacted to ask for their permission to approach the teacher(s). From 2006 onwards, the consent to approach a teacher was extended to the non-twin siblings (6-12 years; mean age = 8.82 years, SD = 1.37 years) of their twins, and from 2009 with consent for triplets.', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys (up to 2012) have been scanned. All data digitally archived. ', 'wave_start_date_collection': '1999-01-01', 'wave_title': 'YS_TRF12', 'wave_universe': '144', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': '', 'wave_contributor_identifier_type': '', 'wave_contributor_name': 'YNTR administration', 'wave_contributor_pid': ''}, {'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': 'de Zeeuw, Eveline L.', 'wave_contributor_pid': '0000-0001-9042-7419'}, {'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': 'Kevenaar, Sofieke T.', 'wave_contributor_pid': '0000-0003-1795-3580'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}], 'wave_funding': [{'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '056-31-001'}, {'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '0240-001-003'}, {'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '481-08-011'}, {'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '056-32-010'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_references': [{'wave_references_citation': 'de Zeeuw, L. E. J. (2015). Educational Achievement in Children: Twinning, Teachers and Genes. https://research.vu.nl/en/publications/educational-achievement-in-children-twinning-teachers-and-genes. ISBN: 978-94-6259-562-0.', 'wave_references_identifier': 'https://hdl.handle.net/1871/52459', 'wave_references_identifier_type': 'Handle', 'wave_references_type': 'IsDescribedBy'}, {'wave_references_citation': 'de Zeeuw EL, van Beijsterveldt CE, de Geus EJ, Boomsma DI. Twin specific risk factors in primary school achievements. Twin Res Hum Genet. 2012 Feb;15(1):107-15. doi: 10.1375/twin.15.1.107. PMID: 22784460.', 'wave_references_identifier': 'https://doi.org/10.1375/twin.15.1.107', 'wave_references_identifier_type': 'DOI', 'wave_references_type': 'IsDescribedBy'}, {'wave_references_citation': "Boomsma, D.I., Bartels, M., de Geus, J.C.N. , van Beijsterveldt, C.E.M. (2013) Teacher Report Forms (TRF) and Conners' Teacher Rating Scale (short version - Revised) in twins and siblings registered with the Netherlands Twin Registry (NTR). DANS Data Station Social Sciences and Humanities, V2, https://doi.org/10.17026/dans-xbh-p5ht.", 'wave_references_identifier': 'https://doi.org/10.17026/dans-xbh-p5ht', 'wave_references_identifier_type': 'DOI', 'wave_references_type': 'HasPart'}], 'wave_subject_codes': [{'wave_subject_code': 'TC', 'wave_subject_code_translated': 'Teacher/tutor on Child'}]}, {'wave_alternate_title': 'Dutch Health and Behavior Questionnaire - pilot [YS_DHBQP]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'In this pilot project, the Dutch Health and Behavior Questionnaire (DHBQ) was developed at the department of Biological Psychology of the VU University. It is a collection of standardized questions targeting multiple domains. The focus of the survey is on emotional and behavioral problems assessed by the Youth Self-Report (YSR), subjective wellbeing, lifestyle, exercise behavior, sedentary behavior, and family functioning. The pilot was sent to 14-, 16-, and 18-year old twins (mean age = 16.6 years, SD = 0.60 years) born between 1993 and 1990 and their 12-25 year old siblings (mean age = 17.5 years, SD = 3.08 years) born between 1981 and 1991.', 'wave_end_date_collection': '2004-01-01', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys have been scanned. All data digitally archived. ', 'wave_start_date_collection': '2004-01-01', 'wave_title': 'YS_DHBQP', 'wave_universe': '168-216', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': '', 'wave_contributor_identifier_type': '', 'wave_contributor_name': 'YNTR administration', 'wave_contributor_pid': ''}, {'wave_contributor_affiliation': 'Leiden University Medical Center', 'wave_contributor_affiliation_identifier': 'https://ror.org/05xvt9f17', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': "Slof-Op 't Landt, Margarita C.T.", 'wave_contributor_pid': '0000-0001-6135-2163'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}, {'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Bartels, Meike', 'wave_creator_pid': '0000-0002-9667-7555'}], 'wave_funding': [{'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '463-06-001'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_references': [{'wave_references_citation': 'van der Aa, N. (2011). Causes of variation in adolescent wellbeing. https://research.vu.nl/en/publications/causes-of-variation-in-adolescent-wellbeing. ISBN: 978-94-6169-009-8.', 'wave_references_identifier': 'https://hdl.handle.net/1871/18574', 'wave_references_identifier_type': 'Handle', 'wave_references_type': 'IsDescribedBy'}, {'wave_references_citation': 'Huppertz, C. (2016). How voluntary exercise behavior runs in families: Twin studies and beyond. https://research.vu.nl/en/publications/how-voluntary-exercise-behavior-runs-in-families-twin-studies-and. ISBN: 978-94-6299-314-3.', 'wave_references_identifier': 'https://hdl.handle.net/1871/54304', 'wave_references_identifier_type': 'Handle', 'wave_references_type': 'IsDescribedBy'}], 'wave_subject_codes': [{'wave_subject_code': 'CC', 'wave_subject_code_translated': 'Child on self'}, {'wave_subject_code': 'SS', 'wave_subject_code_translated': 'Sibling (not part of multiple) on self'}]}, {'wave_alternate_title': 'Dutch Health and Behavior Questionnaire - age 14 [YS_DHBQ14]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The Dutch Health and Behavior Questionnaire (DHBQ) was developed at the department of Biological Psychology of the VU University. It is a collection of standardized questions targeting multiple domains. The focus of the survey is on emotional and behavioral problems assessed by the Youth Self-Report (YSR), subjective wellbeing, lifestyle, exercise behavior, sedentary behavior, and family functioning. The YS_DHBQ14 project targeted 14-year old twins or triplets (mean age = 14.6 years, SD = 0.65 years) born between 1989 and 1999 and their 12-25 year old siblings (mean = 17.3 years, SD = 2.55 years) born between 1981 and 2001.', 'wave_end_date_collection': '2013-01-01', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys (up to 2009) have been scanned. All data digitally archived. ', 'wave_start_date_collection': '2005-01-01', 'wave_title': 'YS_DHBQ14', 'wave_universe': '168', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': '', 'wave_contributor_identifier_type': '', 'wave_contributor_name': 'YNTR administration', 'wave_contributor_pid': ''}, {'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': 'van der Aa, Niels', 'wave_contributor_pid': '0000-0003-1366-4001'}, {'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': 'Huppertz, Charlotte', 'wave_contributor_pid': '0000-0002-5699-2518'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}, {'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Bartels, Meike', 'wave_creator_pid': '0000-0002-9667-7555'}], 'wave_funding': [{'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '463-06-001'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_references': [{'wave_references_citation': 'van der Aa, N. (2011). Causes of variation in adolescent wellbeing. https://research.vu.nl/en/publications/causes-of-variation-in-adolescent-wellbeing. ISBN: 978-94-6169-009-8.', 'wave_references_identifier': 'https://hdl.handle.net/1871/18574', 'wave_references_identifier_type': 'Handle', 'wave_references_type': 'IsDescribedBy'}, {'wave_references_citation': 'Huppertz, C. (2016). How voluntary exercise behavior runs in families: Twin studies and beyond. https://research.vu.nl/en/publications/how-voluntary-exercise-behavior-runs-in-families-twin-studies-and. ISBN: 978-94-6299-314-3.', 'wave_references_identifier': 'https://hdl.handle.net/1871/54304', 'wave_references_identifier_type': 'Handle', 'wave_references_type': 'IsDescribedBy'}], 'wave_subject_codes': [{'wave_subject_code': 'CC', 'wave_subject_code_translated': 'Child on self'}, {'wave_subject_code': 'SS', 'wave_subject_code_translated': 'Sibling (not part of multiple) on self'}]}, {'wave_alternate_title': 'Dutch Health and Behavior Questionnaire - age 16 [YS_DHBQ16]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The Dutch Health and Behavior Questionnaire (DHBQ) was developed at the department of Biological Psychology of the VU University. It is a collection of standardized questions targeting multiple domains. The focus of the survey is on emotional and behavioral problems assessed by the Youth Self-Report (YSR), subjective wellbeing, lifestyle, exercise behavior, sedentary behavior, and family functioning. From 2007, the survey includes the NEO Five Factor Inventory (NEO-FFI) and removed items regarding religion, stuttering, type of transportation to school, and hair/eye color. The YS_DHBQ16 project targeted 16-year old twins or triplets (mean age = 16.9 years, SD = 0.55 years) born between 1987 and 1999 and their 12-25 year old siblings (mean age = 18.5 years, SD = 3.34 years) born between 1981 and 2000.', 'wave_end_date_collection': '2013-01-01', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys (up to 2009) have been scanned. All data digitally archived. ', 'wave_start_date_collection': '2005-01-01', 'wave_title': 'YS_DHBQ16', 'wave_universe': '192', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': '', 'wave_contributor_identifier_type': '', 'wave_contributor_name': 'YNTR administration', 'wave_contributor_pid': ''}, {'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': 'van der Aa, Niels', 'wave_contributor_pid': '0000-0003-1366-4001'}, {'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': 'Huppertz, Charlotte', 'wave_contributor_pid': '0000-0002-5699-2518'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}, {'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Bartels, Meike', 'wave_creator_pid': '0000-0002-9667-7555'}], 'wave_funding': [{'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '463-06-001'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_references': [{'wave_references_citation': 'van der Aa, N. (2011). Causes of variation in adolescent wellbeing. https://research.vu.nl/en/publications/causes-of-variation-in-adolescent-wellbeing. ISBN: 978-94-6169-009-8.', 'wave_references_identifier': 'https://hdl.handle.net/1871/18574', 'wave_references_identifier_type': 'Handle', 'wave_references_type': 'IsDescribedBy'}, {'wave_references_citation': 'Huppertz, C. (2016). How voluntary exercise behavior runs in families: Twin studies and beyond. https://research.vu.nl/en/publications/how-voluntary-exercise-behavior-runs-in-families-twin-studies-and. ISBN: 978-94-6299-314-3.', 'wave_references_identifier': 'https://hdl.handle.net/1871/54304', 'wave_references_identifier_type': 'Handle', 'wave_references_type': 'IsDescribedBy'}], 'wave_subject_codes': [{'wave_subject_code': 'CC', 'wave_subject_code_translated': 'Child on self'}, {'wave_subject_code': 'SS', 'wave_subject_code_translated': 'Sibling (not part of multiple) on self'}]}, {'wave_alternate_title': 'Dutch Health and Behavior Questionnaire - age 18 [YS_DHBQ18]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The Dutch Health and Behavior Questionnaire (DHBQ) was developed at the department of Biological Psychology of the VU University. It is a collection of standardized questions targeting multiple domains. The focus of the survey is on emotional and behavioral problems assessed by the Youth Self-Report (YSR), subjective wellbeing, lifestyle, exercise behavior, sedentary behavior, and family functioning. The YS_DHBQ18 targeted 18-year old twins or triplets (mean age = 18.6 years, SD = 0.47 years) born between 1986 and 1992 and their 12-25 year old siblings (mean age = 19.3 years, SD = 4.13 years) born between 1980 and 1994.', 'wave_end_date_collection': '2006-01-01', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys have been scanned. All data digitally archived. ', 'wave_start_date_collection': '2005-01-01', 'wave_title': 'YS_DHBQ18', 'wave_universe': '216', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': '', 'wave_contributor_identifier_type': '', 'wave_contributor_name': 'YNTR administration', 'wave_contributor_pid': ''}, {'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': 'van der Aa, Niels', 'wave_contributor_pid': '0000-0003-1366-4001'}, {'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': 'Huppertz, Charlotte', 'wave_contributor_pid': '0000-0002-5699-2518'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}, {'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Bartels, Meike', 'wave_creator_pid': '0000-0002-9667-7555'}], 'wave_funding': [{'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '463-06-001'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_references': [{'wave_references_citation': 'van der Aa, N. (2011). Causes of variation in adolescent wellbeing. https://research.vu.nl/en/publications/causes-of-variation-in-adolescent-wellbeing. ISBN: 978-94-6169-009-8.', 'wave_references_identifier': 'https://hdl.handle.net/1871/18574', 'wave_references_identifier_type': 'Handle', 'wave_references_type': 'IsDescribedBy'}, {'wave_references_citation': 'Huppertz, C. (2016). How voluntary exercise behavior runs in families: Twin studies and beyond. https://research.vu.nl/en/publications/how-voluntary-exercise-behavior-runs-in-families-twin-studies-and. ISBN: 978-94-6299-314-3.', 'wave_references_identifier': 'https://hdl.handle.net/1871/54304', 'wave_references_identifier_type': 'Handle', 'wave_references_type': 'IsDescribedBy'}], 'wave_subject_codes': [{'wave_subject_code': 'CC', 'wave_subject_code_translated': 'Child on self'}, {'wave_subject_code': 'SS', 'wave_subject_code_translated': 'Sibling (not part of multiple) on self'}]}, {'wave_alternate_title': ['Brain Scale measurement 1 [YC_BS1]', 'Brain Scale measurement t0', 'BrainScale age 9'], 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The YC_BS1 project was the first measurement in the Dutch longitudinal Brain Scale study in which twins, their siblings and their parents were assessed at three year intervals. YC_BS1 targeted 9-year old twins (mean age = 9.1 years, SD = 0.51 years) born between 1995 and 1996, and their 9-14 year old siblings (mean age = 11.9 years, SD = 1.16 years) born between 1990 and 1997. The main aim of the Brain Scale project was to explore to what extent genetic and environmental factors explain individual differences in brain development and cognition. Data collection included psychometric IQ tests, a comprehensive neuropsychological testing protocol, and parental and self-ratings of behavioral and emotional problems. Physical maturation was measured through assessment of Tanner stages. Hormonal levels (cortisol, luteinizing hormone, follicle-stimulating hormone, testosterone, and estrogens) were assessed in urine and saliva. Brain scans were acquired using 1.5 Tesla Magnetic Resonance Imaging (MRI), which provided volumetric measures and measures of cortical thickness. Buccal swabs were collected for DNA isolation for future candidate gene and genome-wide analysis studies.', 'wave_end_date_collection': '2005-01-01', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys have been scanned. All data digitally archived. ', 'wave_start_date_collection': '2005-01-01', 'wave_title': 'YC_BS1', 'wave_universe': '108', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': 'van Leeuwen, Marieke', 'wave_contributor_pid': '0000-0003-1976-5831'}, {'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_name': 'Peper, Jiska'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}], 'wave_funding': [{'wave_funder_award_title': '', 'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '051.02.060'}, {'wave_funder_award_title': '', 'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '051.02.061'}, {'wave_funder_award_title': 'Spinoza Prize', 'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '56-464-14192'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_references': [{'wave_references_citation': 'van Soelen IL, Brouwer RM, Peper JS, van Leeuwen M, Koenis MM, van Beijsterveldt TC, Swagerman SC, Kahn RS, Hulshoff Pol HE, Boomsma DI. Brain SCALE: brain structure and cognition: an adolescent longitudinal twin study into the genetic etiology of individual differences. Twin Res Hum Genet. 2012 Jun;15(3):453-67. doi: 10.1017/thg.2012.4. PMID: 22856378.', 'wave_references_identifier': 'https://doi.org/10.1017/thg.2012.4', 'wave_references_identifier_type': 'DOI', 'wave_references_type': 'IsDescribedBy'}, {'wave_references_citation': 'van Leeuwen, M. (2008). A study of cognition in pre-adolescent twins. https://research.vu.nl/en/publications/a-study-of-cognition-in-pre-adolescent-twins. ISBN: 978 90 9023637 7.', 'wave_references_identifier': 'https://hdl.handle.net/1871/13072', 'wave_references_identifier_type': 'Handle', 'wave_references_type': 'IsDescribedBy'}, {'wave_references_citation': 'Peper, J. S. (2008). The early pubertal brain: work in progress: A study on genetic and hormonal influences. https://research.vu.nl/en/publications/the-early-pubertal-brain-work-in-progress-a-study-on-genetic-and-. ISBN: 978-90-393-4917-5.', 'wave_references_identifier': 'https://hdl.handle.net/1871.1/f6c21ff1-e62d-42b3-9baf-137c698b9e71', 'wave_references_identifier_type': 'Handle', 'wave_references_type': 'IsDescribedBy'}], 'wave_subject_codes': [{'wave_subject_code': 'MS', 'wave_subject_code_translated': 'Mother (biological or non-biological) on Sibling (not part of multiple)'}]}, {'wave_alternate_title': ['Brain Scale measurement 2 [YC_BS2]', 'Brain Scale measurement t1', 'BrainScale age 12'], 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The YC_BS2 project was the second measurement in the Dutch longitudinal Brain Scale study in which twins, their siblings and their parents were assessed at three year intervals. YC_BS2 took place three years after the baseline (YC_BS1) and targeted 12-year old twins (mean age = 12.2 years, SD = 0.3 years) born between 1995 and 1996 and their 9-18 year old siblings (mean age = 14.8 years, SD = 1.3 years) born between 1990 and 1997. The main aim of the Brain Scale project was to explore to what extent genetic and environmental factors explain individual differences in brain development and cognition. Data collection included psychometric IQ tests, a comprehensive neuropsychological testing protocol, and parental and self-ratings of behavioral and emotional problems. Physical maturation was measured through assessment of Tanner stages. Hormonal levels (cortisol, luteinizing hormone, follicle-stimulating hormone, testosterone, and estrogens) were assessed in urine and saliva. Brain scans were acquired using 1.5 Tesla Magnetic Resonance Imaging (MRI), which provided volumetric measures and measures of cortical thickness. Buccal swabs were collected for DNA isolation for future candidate gene and genome-wide analysis studies.', 'wave_end_date_collection': '2009-01-01', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys have been scanned. All data digitally archived. ', 'wave_start_date_collection': '2007-01-01', 'wave_title': 'YC_BS2', 'wave_universe': '144', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_name': 'van Soelen, Inge'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}], 'wave_funding': [{'wave_funder_award_title': 'Spinoza Prize', 'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '56-464-14192'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_references': [{'wave_references_citation': 'van Soelen IL, Brouwer RM, Peper JS, van Leeuwen M, Koenis MM, van Beijsterveldt TC, Swagerman SC, Kahn RS, Hulshoff Pol HE, Boomsma DI. Brain SCALE: brain structure and cognition: an adolescent longitudinal twin study into the genetic etiology of individual differences. Twin Res Hum Genet. 2012 Jun;15(3):453-67. doi: 10.1017/thg.2012.4. PMID: 22856378.', 'wave_references_identifier': 'https://doi.org/10.1017/thg.2012.4', 'wave_references_identifier_type': 'DOI', 'wave_references_type': 'IsDescribedBy'}, {'wave_references_citation': 'van Soelen, I. L. C. (2011). Genetics of Structural Brain Development and Cognition in Childhood and Early Adolescence. https://research.vu.nl/en/publications/genetics-of-structural-brain-development-and-cognition-in-childho. ISBN: 978-90-6464-498-6.', 'wave_references_identifier': 'https://hdl.handle.net/1871/23946', 'wave_references_identifier_type': 'Handle', 'wave_references_type': 'IsDescribedBy'}], 'wave_subject_codes': [{'wave_subject_code': 'MS', 'wave_subject_code_translated': 'Mother (biological or non-biological) on Sibling (not part of multiple)'}, {'wave_subject_code': 'CC', 'wave_subject_code_translated': 'Child on self'}, {'wave_subject_code': 'SS', 'wave_subject_code_translated': 'Sibling (not part of multiple) on self'}]}, {'wave_alternate_title': 'DISC-IV DSM diagnosis of ADHD and multi-informant CBCL-AP syndrome scores [YC_DSC]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The purpose of the YC_DSC project was to investigate the relation between Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) diagnosis of ADHD and Child Behavioral Checklist Attention Problems (CBCL-AP) scores. Twins were selected based on their maternal CBCL-AP scores at ages 7, 10 and 12 (mean age = 11.7 years, SD = 0.78 years). Twin pairs were selected if at least one of the twins scored high on AP (affected pairs), or if both twins scored low on AP (control pairs). In families that agreed to participate, the mother of the twins was interviewed by telephone with the Diagnostic Interview Schedule for Children (DISC-IV). Other surveys that were collected are the CBCL, SWAN and YSR. Mouth swabs were used to collect buccal cell samples, from which DNA was extracted.', 'wave_end_date_collection': '2005-01-01', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys have been scanned. All data digitally archived. ', 'wave_start_date_collection': '2002-01-01', 'wave_title': 'YC_DSC', 'wave_universe': '120-156', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': 'Derks, Eske M.', 'wave_contributor_pid': '0000-0002-6292-6883'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}], 'wave_funding': [{'wave_funder_award_title': 'Investigator Initiated Research Grant (R01)', 'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': 'MH58799-03'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_references': [{'wave_references_citation': 'Derks EM, Hudziak JJ, Dolan CV, Ferdinand RF, Boomsma DI. The relations between DISC-IV DSM diagnoses of ADHD and multi-informant CBCL-AP syndrome scores. Compr Psychiatry. 2006 Mar-Apr;47(2):116-22. doi: 10.1016/j.comppsych.2005.05.006. PMID: 16490569.', 'wave_references_identifier': 'https://doi.org/10.1016/j.comppsych.2005.05.006', 'wave_references_identifier_type': 'DOI', 'wave_references_type': 'IsDescribedBy'}, {'wave_references_citation': 'Derks, E. M. (2006). Assessment and genetic aetiology of attention problems, hyperactivity, and related disorders.', 'wave_references_identifier': 'https://hdl.handle.net/1871/10547', 'wave_references_identifier_type': 'Handle', 'wave_references_type': 'IsDescribedBy'}, {'wave_references_citation': 'Derks EM, Hudziak JJ, Dolan CV, van Beijsterveldt TC, Verhulst FC, Boomsma DI. Genetic and environmental influences on the relation between attention problems and attention deficit hyperactivity disorder. Behav Genet. 2008 Jan;38(1):11-23. doi: 10.1007/s10519-007-9178-8. Epub 2007 Dec 12. PMID: 18074222; PMCID: PMC2226020.', 'wave_references_identifier': 'https://doi.org/10.1007/s10519-007-9178-8', 'wave_references_identifier_type': 'DOI', 'wave_references_type': 'IsDescribedBy'}], 'wave_subject_codes': [{'wave_subject_code': 'MC', 'wave_subject_code_translated': 'Mother (biological or non-biological) on Child'}, {'wave_subject_code': 'CC', 'wave_subject_code_translated': 'Child on self'}]}, {'wave_alternate_title': 'Determinants of adolescent exercise behavior - the psychological response to exercise [YE_FITNSS]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The YE_FITNSS project aimed to investigate determinants of adolescent exercise behavior in a sample of healthy 16-18 year old twins born between 1993 and 1999 (mean age = 17.1 years, SD = .67 years) and their 12-25 year old siblings born between 1988 and 2000 (mean age = 17.2 years, SD = 3.24 years). Body composition was measured, as well as physical fitness (standing jump, hand grip, sit-and reach flexibility, balance tests). Impulsiveness of the subjects was assessed by the delay discounting questionnaire. Regular voluntary exercise behavior was measured by a short lifestyle interview. While being equipped with a VU University Ambulatory Monitoring System (VU-AMS) and Cosmed device, the subjects performed two submaximal exercise tests and one maximal exercise test. The VU-AMS device records electrocardiogram (ECG) data and impedance cardiogram (ICG) data. The Cosmed device measures oxygen consumption (VO2) and carbon dioxide production (VCO2). VO2max (endurance capacity) was derived during the maximal exercise test. Before, during and after the exercise tests, subjects filled out the Activation-Deactivation Adjective Checklist (AD ACL), Feeling Scale (FS) and the Borg’s Rating of Perceived Exertion (RPE) at multiple time points. These questionnaires determined the subjects’ affective response to exercise. DNA was collected through buccal swabs to determine zygosity.', 'wave_end_date_collection': '2014-01-01', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys have been scanned. All data digitally archived. ', 'wave_start_date_collection': '2012-01-01', 'wave_title': 'YE_FITNSS', 'wave_universe': '192-216', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': 'Schutte, Nienke M.', 'wave_contributor_pid': '0000-0002-8064-2569'}, {'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': 'Nederend, Ineke', 'wave_contributor_pid': '0000-0003-1873-9922'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'de Geus, Eco J. C.', 'wave_creator_pid': '0000-0001-6022-2666'}, {'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Bartels, Meike', 'wave_creator_pid': '0000-0002-9667-7555'}], 'wave_funding': [{'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '1R01DK092127-01'}, {'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': 'RO1DK-092127'}, {'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '022.003.010'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_references': [{'wave_references_citation': 'Schutte, N. M. (2017). Unraveling the genetic components of voluntary exercise behavior in adolescents and young adults. https://research.vu.nl/en/publications/unraveling-the-genetic-components-of-voluntary-exercise-behavior-. ISBN: 9789463322126.', 'wave_references_identifier': 'https://hdl.handle.net/1871/55350', 'wave_references_identifier_type': 'Handle', 'wave_references_type': 'IsDescribedBy'}], 'wave_subject_codes': [{'wave_subject_code': 'CC', 'wave_subject_code_translated': 'Child on self'}, {'wave_subject_code': 'SS', 'wave_subject_code_translated': 'Sibling (not part of multiple) on self'}]}, {'wave_alternate_title': 'Genetics of attention and executive functioning measurement 2 [YE_ATTEF2]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The YE_ATTEF2 project was the second measurement of a longitudinal study on the source of individual differences of cognition, attention, and executive functioning from preschool to young adulthood. This project included the measurement five years after baseline (YE_ATTEF1) among 12-year old twin pairs (mean age = 12.4 years, SD = 0.14 years) and their 8-16 year old siblings (mean age = 11.97 years, SD = 2.55 years), and additionally recruited new twin pairs and siblings of the twin pairs. Behavioral data were collected with surveys filled in by parents and teachers (Conners, Child Behavior Checklist (CBCL), Strengths and Weaknesses of ADHD symptoms and Normal behavior Scale (SWAN), Teacher Report Form (TRF)) or filled in by children themselves (Youth Self Report (YSR)). To measure pubertal development, children filled in the Tanner questionnaire. Neurocognitive abilities were assessed with computerized ANT tasks, Flanker, Simon and Stroop. IQ was assessed with WISC-R. DNA was collected to determine zygosity and for genotyping SNP’S at candidate gene loci. Saliva was collected to assess cortisol concentrations.', 'wave_end_date_collection': '2004-01-01', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys have been scanned. All data digitally archived. ', 'wave_start_date_collection': '2002-01-01', 'wave_title': 'YE_ATTEF2', 'wave_universe': '144', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': 'Polderman, Tinca', 'wave_contributor_pid': '0000-0001-5564-301X'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}], 'wave_funding': [{'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '904-57-94'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_references': [{'wave_references_citation': 'Polderman, T. J. C. (2007). Genetics of Attention and Executive Functioning. https://research.vu.nl/en/publications/genetics-of-attention-and-executive-functioning. ISBN: 9789086590964.', 'wave_references_identifier': 'https://hdl.handle.net/1871/10808', 'wave_references_identifier_type': 'Handle', 'wave_references_type': 'IsDescribedBy'}], 'wave_subject_codes': [{'wave_subject_code': 'MS', 'wave_subject_code_translated': 'Mother (biological or non-biological) on Sibling (not part of multiple)'}, {'wave_subject_code': 'CC', 'wave_subject_code_translated': 'Child on self'}, {'wave_subject_code': 'MC', 'wave_subject_code_translated': 'Mother (biological or non-biological) on Child'}]}, {'wave_alternate_title': 'MRI-based research into problem behaviors in twins [YC_ADHMRI]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'In the ADHD-MRI project, the genetic and environmental influence on ADHD related neurobiological changes were investigated in monozygotic twins (mean age = 14.9 years, SD = 1.2 years) who were born between 1986 and 1993. Twins were selected based on their Child Behavior Checklist Attention Problems (CBCL-AP) scores obtained in the regular YNTR survey waves and divided into three groups: discordant pairs (one affected, one unaffected), concordant pairs (both affected) and control pairs (both unaffected). To determine the presence of ADHD, mothers of the participants were interviewed with the Diagnostic Interview Schedule for Children (DISC-IV). Additionally, they filled in two behavioral questionnaires (CBCL and Strengths and Weaknesses of ADHD Symptoms and Normal Behavior (SWAN)). The twins filled in the Youth Self Report (YSR). Based on the outcome of the interview and questionnaires, twin pairs that were found eligible for the MRI experiments were invited. Both structural and functional MRI (color-stroop and flanker tasks) were performed. DNA was collected to confirm zygosity.', 'wave_end_date_collection': '2007-01-01', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys have been scanned. All data digitally archived. ', 'wave_start_date_collection': '2003-01-01', 'wave_title': 'YC_ADHMRI', 'wave_universe': '180', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': 'Derks, Eske M.', 'wave_contributor_pid': '0000-0002-6292-6883'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}], 'wave_funding': [{'wave_funder_award_title': 'Investigator Initiated Research Grant (R01)', 'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': 'MH58799-03'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_references': [{'wave_references_citation': 'Derks EM, Hudziak JJ, Dolan CV, Ferdinand RF, Boomsma DI. The relations between DISC-IV DSM diagnoses of ADHD and multi-informant CBCL-AP syndrome scores. Compr Psychiatry. 2006 Mar-Apr;47(2):116-22. doi: 10.1016/j.comppsych.2005.05.006. PMID: 16490569.', 'wave_references_identifier': 'https://doi.org/10.1016/j.comppsych.2005.05.006', 'wave_references_identifier_type': 'DOI', 'wave_references_type': 'IsDescribedBy'}, {'wave_references_citation': 'Derks, E. M. (2006). Assessment and genetic aetiology of attention problems, hyperactivity, and related disorders.', 'wave_references_identifier': 'https://hdl.handle.net/1871/10547', 'wave_references_identifier_type': 'Handle', 'wave_references_type': 'IsDescribedBy'}, {'wave_references_citation': "van 't Ent D, Lehn H, Derks EM, Hudziak JJ, Van Strien NM, Veltman DJ, De Geus EJ, Todd RD, Boomsma DI. A structural MRI study in monozygotic twins concordant or discordant for attention/hyperactivity problems: evidence for genetic and environmental heterogeneity in the developing brain. Neuroimage. 2007 Apr 15;35(3):1004-20. doi: 10.1016/j.neuroimage.2007.01.037. Epub 2007 Feb 8. PMID: 17346990; PMCID: PMC1939804.", 'wave_references_identifier': 'https://doi.org/10.1016/j.neuroimage.2007.01.037', 'wave_references_identifier_type': 'DOI', 'wave_references_type': 'IsDescribedBy'}, {'wave_references_citation': "van 't Ent D, van Beijsterveldt CE, Derks EM, Hudziak JJ, Veltman DJ, Todd RD, Boomsma DI, De Geus EJ. Neuroimaging of response interference in twins concordant or discordant for inattention and hyperactivity symptoms. Neuroscience. 2009 Nov 24;164(1):16-29. doi: 10.1016/j.neuroscience.2009.01.056. Epub 2009 Feb 3. PMID: 19409224; PMCID: PMC2760677.", 'wave_references_identifier': 'https://doi.org/10.1016/j.neuroscience.2009.01.056', 'wave_references_identifier_type': 'DOI', 'wave_references_type': 'IsDescribedBy'}], 'wave_subject_codes': [{'wave_subject_code': 'MC', 'wave_subject_code_translated': 'Mother (biological or non-biological) on Child'}, {'wave_subject_code': 'CC', 'wave_subject_code_translated': 'Child on self'}]}, {'wave_alternate_title': 'Discordant/Concordant Teacher Effects [YS_DT]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The YS_DT project was part of a study on the effects of having a male or female teacher on educational achievement in twins between 10 and 24 years old (mean age = 16.2 years, SD = 2.71 years) who were born between 1989 and 2003. The sample was selected from a group of twins whose primary school teacher had filled in the Teacher Report Form (TRF). Parents were asked to report, for all grades, whether the twins attended the same or separate classes and the gender of the teacher(s) of their children, and the Cito scores.', 'wave_end_date_collection': '2013-01-01', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys have been scanned. All data digitally archived. ', 'wave_start_date_collection': '2011-01-01', 'wave_title': 'YS_DT', 'wave_universe': '120-288', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': 'de Zeeuw, Eveline', 'wave_contributor_pid': '0000-0001-9042-7419'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}], 'wave_funding': [{'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '056-31-001'}, {'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '0240-001-003'}, {'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '481-08-011'}, {'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '056-32-010'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_references': [{'wave_references_citation': 'de Zeeuw EL, van Beijsterveldt CEM, Glasner TJ, Bartels M, de Geus EJC, Boomsma DI. Do children perform and behave better at school when taught by same-gender teachers? Learning and Individual Differences. 2014;36:152-156. doi: 10.1016/j.lindif.2014.10.017', 'wave_references_identifier': 'https://doi.org/10.1016/j.lindif.2014.10.017', 'wave_references_identifier_type': 'DOI', 'wave_references_type': 'IsDescribedBy'}, {'wave_references_citation': 'de Zeeuw, L. E. J. (2015). Educational Achievement in Children: Twinning, Teachers and Genes. https://research.vu.nl/en/publications/educational-achievement-in-children-twinning-teachers-and-genes. ISBN: 978-94-6259-562-0.', 'wave_references_identifier': 'https://hdl.handle.net/1871/52459', 'wave_references_identifier_type': 'Handle', 'wave_references_type': 'IsDescribedBy'}], 'wave_subject_codes': [{'wave_subject_code': 'PC', 'wave_subject_code_translated': 'Parent (biological and non-biological, incl. caregivers) on Child'}]}, {'wave_alternate_title': 'Cognitive abilities of 12-year-old twins [YE_COG12]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The YE_COG12 project was the fourth measurement of a longitudinal study on the development of intelligence and problem behavior (waves one and two not included in this catalogue, wave 3: YE_COG10), and targeted 12-year old twins (mean age = 12 years, SD = 0.08 years) born between 1986 and 1988. Intelligence was measured by the Dutch version of the Wechsler Intelligence Scale for Children-Revised (WISC-R). Cortisol and testosterone levels were measured in saliva, which was collected on two consecutive days. Pubertal development was measured with the Tanner self-report scales. Behavioral data was collected with the Youth Self-Report (YSR).', 'wave_end_date_collection': '2000-01-01', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys have been scanned. All data digitally archived. ', 'wave_start_date_collection': '1998-01-01', 'wave_title': 'YE_COG12', 'wave_universe': '144', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': 'Bartels, Meike', 'wave_contributor_pid': '0000-0002-9667-7555'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}], 'wave_funding': [{'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '575-25-012'}, {'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_grant_number': 'R 56-467'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_references': [{'wave_references_citation': 'Bartels, M. (2003). Behavior problems, cognition, and hormones: A longitudinal-genetic study in childhood. VU. https://research.vu.nl/en/publications/behavior-problems-cognition-and-hormones-a-longitudinal-genetic-s. ISBN: 9090164901, 9789090164908.', 'wave_references_identifier': 'https://hdl.handle.net/1871/10640', 'wave_references_identifier_type': 'Handle', 'wave_references_type': 'IsDescribedBy'}], 'wave_subject_codes': [{'wave_subject_code': 'CC', 'wave_subject_code_translated': 'Child on self'}, {'wave_subject_code': 'MC', 'wave_subject_code_translated': 'Mother (biological or non-biological) on Child'}]}, {'wave_alternate_title': 'Cognitive abilities of 18-year-old twins [YE_COG18]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The YE_COG18 project is the fifth measurement of a longitudinal study into the development of intelligence and problem behaviour (waves one and two not included in this catalogue, wave 3: YE_COG10, wave 4: YE_COG12), to which additional participants were recruited (twins with siblings and their parents). It targeted 18-year old twins (mean age = 18.1 years, SD = 0.5 years) born between 1986 and 1991, their 8-35 year old siblings (mean age = 18.8 years, SD = 4.9 years) born between 1970 and 1998, and their parents (mean age = 48.9 years, SD = 4.14 years) born between 1942 and 1965. The test protocol consisted of a physical part and a psychological part. Physical measurements included cardiovascular functioning (assessed with the VU-AMS device), a physical examination with basic anthropometric measurements and the collection of saliva, DNA and fingerprints. The psychological part consisted of a series of cognitive tests that measured the following abilities: intelligence (Wechsler Intelligence Scale for Children, WISC-R or Revised Amsterdamse Kinder Intelligentie Test, RAKIT); inhibition (Stroop); spontaneous production of words (Verbal fluency); verbal learning and memory (California Verbal Learning Task, CVLT); emotion recognition (Reading the mind in the eyes); perceptual speed (Π inspection time task); spatial short term memory (n-back task and Corsi block tapping task). Furthermore, some questionnaires were administered to the participants (Autism-Spectrum Quotient, Tanner self-report), mothers of the twins (Social Responsiveness Scale) and research assistants (Test Observation form).', 'wave_end_date_collection': '2006-01-01', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys have been scanned. All data digitally archived. ', 'wave_start_date_collection': '2004-01-01', 'wave_title': 'YE_COG18', 'wave_universe': '216', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': 'Hoekstra, Rosa A.', 'wave_contributor_pid': '0000-0002-1333-9762'}, {'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_identifier_schemeuri': 'https://orcid.org/', 'wave_contributor_identifier_type': 'ORCID', 'wave_contributor_name': 'Estourgie-van Burk, Frederiek', 'wave_contributor_pid': '0000-0001-7562-641X'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}], 'wave_funding': [{'wave_funder_award_title': 'Spinoza Prize', 'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '56-464-14192'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_references': [{'wave_references_citation': 'Hoekstra, R. A. (2007). Autistic traits, withdrawn behaviour and cognition: a longitudinal twin study from early childhood to young adulthood. https://research.vu.nl/en/publications/autistic-traits-withdrawn-behaviour-and-cognition-a-longitudinal-.', 'wave_references_identifier': 'https://hdl.handle.net/1871/33194', 'wave_references_identifier_type': 'Handle', 'wave_references_type': 'IsDescribedBy'}, {'wave_references_citation': 'Estourgie-van Burk, G. F. (2011). Variation in growth and the influence of early growth in later life: a twin-sibling study. https://research.vu.nl/en/publications/variation-in-growth-and-the-influence-of-early-growth-in-later-li. ISBN: 9789086595532.', 'wave_references_identifier': 'https://hdl.handle.net/1871/19635', 'wave_references_identifier_type': 'Handle', 'wave_references_type': 'IsDescribedBy'}], 'wave_subject_codes': [{'wave_subject_code': 'CC', 'wave_subject_code_translated': 'Child on self'}, {'wave_subject_code': 'SS', 'wave_subject_code_translated': 'Sibling (not part of multiple) on self'}]}, {'wave_alternate_title': 'Triplet survey age 3 [YS_TRIP]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The Child Behavior Checklist (CBCL1.5-5) is sent to parents of approximately 3-year old triplets (mean age = 3.4 years, SD = 0.33 years), together with a short general questionnaire on parental and triplet characteristics (e.g. parental employment and religion, triplet school achievements and health).', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys (up to 2020) have been scanned. All data digitally archived. ', 'wave_start_date_collection': '1991-01-01', 'wave_title': 'YS_TRIP age 3', 'wave_universe': '36', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_name': 'YNTR administration'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_subject_codes': [{'wave_subject_code': 'MC', 'wave_subject_code_translated': 'Mother (biological or non-biological) on Child'}, {'wave_subject_code': 'FC', 'wave_subject_code_translated': 'Father (biological or non-biological) on Child'}]}, {'wave_alternate_title': 'Triplet survey age 4 [YS_TRIP]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The Child Behavior Checklist was sent to parents of approximately 4-year old triplets born between 1992 and 2005 (mean age = 4.9 years, SD = 0.60 years), together with a short general questionnaire on parental and triplet characteristics (e.g. parental employment and religion, triplet school achievements and health).', 'wave_end_date_collection': '2011-01-01', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys have been scanned. All data digitally archived. ', 'wave_start_date_collection': '1998-01-01', 'wave_title': 'YS_TRIP age 4', 'wave_universe': '48', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_name': 'YNTR administration'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_subject_codes': [{'wave_subject_code': 'MC', 'wave_subject_code_translated': 'Mother (biological or non-biological) on Child'}, {'wave_subject_code': 'FC', 'wave_subject_code_translated': 'Father (biological or non-biological) on Child'}]}, {'wave_alternate_title': 'Triplet survey age 5 [YS_TRIP]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The Child Behavior Checklist (CBCL6-18) is sent to parents of approximately 7-year old triplets (mean age = 7.5 years, SD = 0.75 years), together with a short general questionnaire on parental and triplet characteristics (e.g. parental employment and religion, triplet school achievements and health).', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys (up to 2019) have been scanned. All data digitally archived. ', 'wave_start_date_collection': '1991-01-01', 'wave_title': 'YS_TRIP age 5', 'wave_universe': '60', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_name': 'YNTR administration'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_subject_codes': [{'wave_subject_code': 'MC', 'wave_subject_code_translated': 'Mother (biological or non-biological) on Child'}, {'wave_subject_code': 'FC', 'wave_subject_code_translated': 'Father (biological or non-biological) on Child'}]}, {'wave_alternate_title': 'Triplet survey age 7 [YS_TRIP]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The Child Behavior Checklist (CBCL6-18) is sent to parents of approximately 7-year old triplets (mean age = 7.5 years, SD = 0.75 years), together with a short general questionnaire on parental and triplet characteristics (e.g. parental employment and religion, triplet school achievements and health).', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys (up to 2019) have been scanned. All data digitally archived. ', 'wave_start_date_collection': '1998-01-01', 'wave_title': 'YS_TRIP age 7', 'wave_universe': '84', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_name': 'YNTR administration'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_subject_codes': [{'wave_subject_code': 'MC', 'wave_subject_code_translated': 'Mother (biological or non-biological) on Child'}, {'wave_subject_code': 'FC', 'wave_subject_code_translated': 'Father (biological or non-biological) on Child'}]}, {'wave_alternate_title': 'Triplet survey age 10 [YS_TRIP]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The Child Behavior Checklist (CBCL6-18) is sent to parents of approximately 9 or 10-year old triplets (mean age = 10.1 years, SD = 0.64 years), together with a short general questionnaire on parental and triplet characteristics (e.g. parental employment and religion, triplet school achievements and health).', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys (up to 2019) have been scanned. All data digitally archived. ', 'wave_start_date_collection': '1998-01-01', 'wave_title': 'YS_TRIP age 10', 'wave_universe': '108-120', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_name': 'YNTR administration'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_subject_codes': [{'wave_subject_code': 'MC', 'wave_subject_code_translated': 'Mother (biological or non-biological) on Child'}, {'wave_subject_code': 'FC', 'wave_subject_code_translated': 'Father (biological or non-biological) on Child'}]}, {'wave_alternate_title': 'Triplet survey age 12 [YS_TRIP]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The Child Behavior Checklist (CBCL6-18) is sent to parents of approximately 12-year old triplets (mean age = 12.2 years, SD = 0.71 years), together with a short general questionnaire on parental and triplet characteristics (e.g. parental employment and religion, triplet school achievements and health).', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys (up to 2019) have been scanned. All data digitally archived. ', 'wave_start_date_collection': '1998-01-01', 'wave_title': 'YS_TRIP age 12', 'wave_universe': '144', 'wave_contributor': [{'wave_contributor_affiliation': 'Vrije Universiteit Amsterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_contributor_affiliation_identifier_scheme': 'ROR', 'wave_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_contributor_name': 'YNTR administration'}], 'wave_creator': [{'wave_creator_affiliation': 'Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/008xxew50', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Boomsma, Dorret I.', 'wave_creator_pid': '0000-0002-7099-7972'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/008xxew50', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Vrije Universiteit Amsterdam'}], 'wave_subject_codes': [{'wave_subject_code': 'MC', 'wave_subject_code_translated': 'Mother (biological or non-biological) on Child'}, {'wave_subject_code': 'FC', 'wave_subject_code_translated': 'Father (biological or non-biological) on Child'}]}]
resources	[]
tags	[]
groups	[]
relationships_as_subject	[]
relationships_as_object	[]
tracking_summary	{'total': 0, 'recent': 0}