Dataset

Family Composition

Family composition was assessed, including multiples in the (extended) family, twins in the extended family, number of siblings and number of children.

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Keywords	divorce mutiple birth sibship size family fertility half-siblings parents siblings twinning family composition
Constructs	demographics
Waves	Young Netherlands Twin Register YS_1 MM MF 0 months - 12 months From 1987-01-01 (ongoing) YS_2 MM FF MF 24 months From 1990-01-01 (ongoing) YS_5 MC 5.0 years From 1994-01-01 (ongoing) YS_7 MM FF MC FC 7.0 years From 1995-01-01 (ongoing) YS_10 MM FF MC FC 9.0 - 10.0 years From 1997-01-01 (ongoing) YS_12 MM FF MC FC 12.0 years From 1998-01-01 (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_BS2 PC CC SS 12.0 years From 2007-01-01 to 2009-01-01 YE_COG18 S 18.0 years From 2004-01-01 to 2006-01-01 YS_TRIP age 1 MM FF 12 months From 1990-01-01 to 2001-01-01 YS_TRIP age 2 MM FF 24 months From 1991-01-01 to 1993-01-01 YS_TRIP age 1-2 MM 24 months - 38.0 years From 2008-01-01 (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_1 Wave

Wave alternate title	YNTR survey age 1 YS_1
Short description of the wave	After registration of newborn twins, which is before the age of 12 months for 89% of the twins (mean age = 0.8 years, SD = 1.17 years), the mother of a twin pair receives the first survey which focuses on conception (spontaneous or otherwise), information from parents themselves (demographics, height, weight), pregnancy (e.g. duration, smoking and drinking behaviors of both parents during pregnancy), birth and health (malformations) of the children shortly after birth. The mother is asked to fill in this survey, and this was done by the biological mother for almost all of surveys with others (stepmother, adoptive mother, some fathers) completing this survey in a small number of families (<0.05%).
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	1987-01-01
End date wave collection
Wave universe description	0 months - 12 months
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

YS_2 Wave

Wave alternate title	YNTR survey age 2 YS_2
Short description of the wave	The YS_2 survey gathers maternal report (fathers added in 2014) on motor development, breastfeeding, health, handedness and growth data (including height and weight) as obtained from the Dutch National Health Services (from 2010) in 2-year old twins (mean age = 2.35 years, SD = 0.30 years). From 2008 onwards, items on wellbeing, child care, and temperament were added to the surveys.
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	1990-01-01
End date wave collection
Wave universe description	24 months
Stage of measurement
Language	NL
Description of physical data product	Data collected through paper-and-pencil surveys (up to 2015) have been scanned. All data digitally archived.
Additional info (URL)
Additional information
Contributors	YNTR administration Vrije Universiteit Amsterdam

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_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_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_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_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_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

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 1 Wave

Wave alternate title	Triplet survey age 1 YS_TRIP
Short description of the wave	The YNTR survey for triplets at age 1 (mean age = 1.35 years, SD = 1.39 years, born between 1987 and 2005) was a 2-page survey that included items on pregnancy, gestational age, smoking and alcohol consumption during pregnancy, and mode of delivery. The content of this survey is highly comparable with the survey 1 for twins (YS_1).
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	1990-01-01
End date wave collection	2001-01-01
Wave universe description	12 months
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 2 Wave

Wave alternate title	Triplet survey age 2 YS_TRIP
Short description of the wave	In 1991 and 1992 YS_TRIP survey 2 was collected in a small group of triplets (N=39). Survey 2 includes information on breastfeeding, attaining milestones, and growth.
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	1993-01-01
Wave universe description	24 months
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 1-2 Wave

Wave alternate title	Triplet survey age 1-2 YS_TRIP
Short description of the wave	In 2008, a combination of the triplet surveys at age 1 and 2 was sent to mothers of all triplets in both YNTR and ANTR. The survey was sent to 535 mothers and was returned by 264 mothers (triplet ages ranged between 2 and 38 years, mean age = 11.9, SD = 7.0). Since 2009, the combined survey 1 and 2 serves as the first survey for newly registered triplets at age 2. The combined survey comprises items on pregnancy, gestational age, smoking and alcohol consumption during pregnancy, mode of delivery, breastfeeding, attaining milestones, and growth.
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	2008-01-01
End date wave collection
Wave universe description	24 months - 38.0 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_analysis_unit	{Individual,Family}
dc_cohort	NTR
id	cfe4b9fe-b94a-4321-b1b9-46c714586999
isopen	False
license_title	None
maintainer	None
maintainer_email	None
metadata_created	2024-10-17T12:38:54.022047
metadata_modified	2024-10-20T12:51:14.487731
name	8044d8937b825efc7274bcbea99b7130
notes	Family composition was assessed, including multiples in the (extended) family, twins in the extended family, number of siblings and number of children.
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	Family Composition
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/kt06-9236'}]
dc_constructs	[{'dc_construct': 'demographics'}]
dc_labels	[{'dc_label': 'divorce'}, {'dc_label': 'mutiple birth'}, {'dc_label': 'sibship size'}, {'dc_label': 'family'}, {'dc_label': 'fertility'}, {'dc_label': 'half-siblings'}, {'dc_label': 'parents'}, {'dc_label': 'siblings'}, {'dc_label': 'twinning'}, {'dc_label': 'family composition'}]
dc_modes_of_collection	[{'dc_mode_of_collection': 'SelfAdministeredQuestionnaire'}]
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{'measure_age_month': 435}, {'measure_age_month': 436}, {'measure_age_month': 437}, {'measure_age_month': 438}, {'measure_age_month': 439}, {'measure_age_month': 440}, {'measure_age_month': 441}, {'measure_age_month': 442}, {'measure_age_month': 443}, {'measure_age_month': 444}, {'measure_age_month': 445}, {'measure_age_month': 446}, {'measure_age_month': 447}, {'measure_age_month': 448}, {'measure_age_month': 449}, {'measure_age_month': 450}, {'measure_age_month': 451}, {'measure_age_month': 452}, {'measure_age_month': 453}, {'measure_age_month': 454}, {'measure_age_month': 455}, {'measure_age_month': 456}]
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 1 [YS_1]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'After registration of newborn twins, which is before the age of 12 months for 89% of the twins (mean age = 0.8 years, SD = 1.17 years), the mother of a twin pair receives the first survey which focuses on conception (spontaneous or otherwise), information from parents themselves (demographics, height, weight), pregnancy (e.g. duration, smoking and drinking behaviors of both parents during pregnancy), birth and health (malformations) of the children shortly after birth. The mother is asked to fill in this survey, and this was done by the biological mother for almost all of surveys with others (stepmother, adoptive mother, some fathers) completing this survey in a small number of families (<0.05%).', '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': '1987-01-01', 'wave_title': 'YS_1', 'wave_universe': '0-12', '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': 'MM', 'wave_subject_code_translated': 'Mother (biological or non-biological) on self'}, {'wave_subject_code': 'MF', 'wave_subject_code_translated': 'Mother (biological or non-biological) on Father (biological or non-biological)'}]}, {'wave_alternate_title': 'YNTR survey age 2 [YS_2]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The YS_2 survey gathers maternal report (fathers added in 2014) on motor development, breastfeeding, health, handedness and growth data (including height and weight) as obtained from the Dutch National Health Services (from 2010) in 2-year old twins (mean age = 2.35 years, SD = 0.30 years). From 2008 onwards, items on wellbeing, child care, and temperament were added to the surveys.', 'wave_language': 'NL', 'wave_physical_data_product_description': 'Data collected through paper-and-pencil surveys (up to 2015) have been scanned. All data digitally archived. ', 'wave_start_date_collection': '1990-01-01', 'wave_title': 'YS_2', 'wave_universe': '24', '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': 'MM', 'wave_subject_code_translated': 'Mother (biological or non-biological) on self'}, {'wave_subject_code': 'FF', 'wave_subject_code_translated': 'Father (biological or non-biological) on self'}, {'wave_subject_code': 'MF', 'wave_subject_code_translated': 'Mother (biological or non-biological) on Father (biological or non-biological)'}]}, {'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 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': 'MM', 'wave_subject_code_translated': 'Mother (biological or non-biological) on self'}, {'wave_subject_code': 'FF', 'wave_subject_code_translated': 'Father (biological or non-biological) on self'}, {'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 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': 'MM', 'wave_subject_code_translated': 'Mother (biological or non-biological) on self'}, {'wave_subject_code': 'FF', 'wave_subject_code_translated': 'Father (biological or non-biological) on self'}, {'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 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': 'MM', 'wave_subject_code_translated': 'Mother (biological or non-biological) on self'}, {'wave_subject_code': 'FF', 'wave_subject_code_translated': 'Father (biological or non-biological) on self'}, {'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': '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 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': 'PC', 'wave_subject_code_translated': 'Parent (biological and non-biological, incl. caregivers) on Child'}, {'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': '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': 'S', 'wave_subject_code_translated': 'Sibling (not part of multiple)'}]}, {'wave_alternate_title': 'Triplet survey age 1 [YS_TRIP]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'The YNTR survey for triplets at age 1 (mean age = 1.35 years, SD = 1.39 years, born between 1987 and 2005) was a 2-page survey that included items on pregnancy, gestational age, smoking and alcohol consumption during pregnancy, and mode of delivery. The content of this survey is highly comparable with the survey 1 for twins (YS_1).', 'wave_end_date_collection': '2001-01-01', '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': '1990-01-01', 'wave_title': 'YS_TRIP age 1', 'wave_universe': '12', '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': 'MM', 'wave_subject_code_translated': 'Mother (biological or non-biological) on self'}, {'wave_subject_code': 'FF', 'wave_subject_code_translated': 'Father (biological or non-biological) on self'}]}, {'wave_alternate_title': 'Triplet survey age 2 [YS_TRIP]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'In 1991 and 1992 YS_TRIP survey 2 was collected in a small group of triplets (N=39). Survey 2 includes information on breastfeeding, attaining milestones, and growth.', 'wave_end_date_collection': '1993-01-01', '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': '1991-01-01', 'wave_title': 'YS_TRIP age 2', 'wave_universe': '24', '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': 'MM', 'wave_subject_code_translated': 'Mother (biological or non-biological) on self'}, {'wave_subject_code': 'FF', 'wave_subject_code_translated': 'Father (biological or non-biological) on self'}]}, {'wave_alternate_title': 'Triplet survey age 1-2 [YS_TRIP]', 'wave_cohort': 'NTR: Young Netherlands Twin Register', 'wave_cohort_ckan_id': '6f88a94b0bf79a8304ba604c655c08a9', 'wave_description': 'In 2008, a combination of the triplet surveys at age 1 and 2 was sent to mothers of all triplets in both YNTR and ANTR. The survey was sent to 535 mothers and was returned by 264 mothers (triplet ages ranged between 2 and 38 years, mean age = 11.9, SD = 7.0). Since 2009, the combined survey 1 and 2 serves as the first survey for newly registered triplets at age 2. The combined survey comprises items on pregnancy, gestational age, smoking and alcohol consumption during pregnancy, mode of delivery, breastfeeding, attaining milestones, and growth.', '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': '2008-01-01', 'wave_title': 'YS_TRIP age 1-2', 'wave_universe': '24-456', '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': 'MM', 'wave_subject_code_translated': 'Mother (biological or non-biological) on self'}]}]
resources	[]
tags	[]
groups	[]
relationships_as_subject	[]
relationships_as_object	[]
tracking_summary	{'total': 0, 'recent': 0}