Dataset

fMRI - Resting State

Functional magnetic resonance imaging (MRI) is a non-invasive technique for examining brain activity. Resting state fMRI aims to assess spontaneous brain activity using MRI while the participant is at rest, not performing any specific task. It captures ongoing functional connectivity patterns within the brain.

At the end of the imaging protocol, resting-state data was acquired when participants had their eyes closed. A total of 142 T2-weighted whole-brain echo-planar images (EPIs) were obtained, which included 2 dummy volumes at the beginning of the scan to account for T1 saturation effects. The imaging parameters used for the resting-state data remained constant throughout the waves and were as follows: a repetition time (TR) of 2.2 seconds, an echo time (TE) of 30 ms, and a flip angle of 80°. The field of view (FOV) was 220.000 mm in the right-left (rl) direction, 220.00 mm in the anterior-posterior (ap) direction, and 111.65 mm in the foot-head (fh) direction. The data was acquired in 37 slices.

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Keywords	brain connectivity brain activity brain functioning brain network resting state neuroimaging brain imaging magnetic resonance imaging
Constructs	physiology
Waves	Early Childhood Cohort ECC - T5 C 7.0 - 9.0 years From 2019-02-06 to 2019-10-19 Middle Childhood Cohort MCC - T1 C 7.0 - 9.0 years From 2015-06-16 to 2016-08-27 MCC - T3 C 9.0 - 11.0 years From 2017-08-27 to 2018-09-30 MCC - T5 C 11.0 - 13.0 years From 2019-11-04 to 2021-04-28 MCC - T7 C 14.0 - 15.0 years From 2023-04-01 to 2023-10-30
Mode of collection	MeasurementsAndTests MRI
Analysis unit	Individual
Instrument name	Resting state functional Magnetic Resonance Imaging (RS-fMRI)
Measure name	fMRI - Resting State
References	Achterberg, M., & van der Meulen, M. (2019). Genetic and environmental influences on MRI scan quantity and quality. Developmental Cognitive Neuroscience, 38, 100667. https://doi.org/10.1016/j.dcn.2019.100667 Achterberg, M., Bakermans-Kranenburg, M. J., van Ijzendoorn, M. H., van der Meulen, M., Tottenham, N., & Crone, E. A. (2018). Distinctive heritability patterns of subcortical-prefrontal cortex resting state connectivity in childhood: A twin study. NeuroImage, 175, 138–149. https://doi.org/10.1016/j.neuroimage.2018.03.076

Measure was collected within the following cohort study:

Leiden Consortium on Individual Development Cohort study

Purpose	The primary aim of the Leiden-CID study is to increase our understanding of the developmental pathways of social behavior and behavioral control that are important to the development of social competence, from early childhood to young adulthood. If we better understand the mechanisms involved in developmental processes of social competence, this allows us to understand optimal conditions that add to the well-being of developing individuals.
description
Alternate title	L-CID, Leiden-CID, Samen Uniek
Data access information	L-CID believes that open science is important in improving scientific quality. Therefore, our we make our codebooks, protocols and collected (meta)data accessible to other researchers. https://www.developmentmatters.nl/data-access/
Publisher	Leiden University Leiden University Medical Center
Principal investigators	van IJzendoorn, Marinus Leiden University, Erasmus University Rotterdam, University of Cambridge Crone, Eveline Leiden University, Erasmus University Rotterdam Bakermans-Kranenburg, Marian Leiden University, Vrije Universiteit Amsterdam Engels, Rutger Leiden University, Erasmus University Rotterdam
Cohort study international identifier
Language	NL
Funding information	Dutch Research Council 024.001.003 Funder identifier https://ror.org/04jsz6e67 Funder identifier type ROR Funder identifier type URI https://ror.org/ Funder award title Gravitation program Funder award URI
Contact information	Eveline Crone Leiden University, Erasmus University Rotterdam ecrone@fsw.leidenuniv.nl
References	Crone, E. A., Achterberg, M., Dobbelaar, S., Euser, S., van den Bulk, B., van der Meulen, M., ... & van IJzendoorn, M. H. (2020). Neural and behavioral signatures of social evaluation and adaptation in childhood and adolescence: the Leiden consortium on individual development (L-CID). Developmental Cognitive Neuroscience, 45, 100805. https://doi.org/10.1016/j.dcn.2020.100805 Euser, S., Bakermans-Kranenburg, M. J., van den Bulk, B. G., Linting, M., Damsteegt, R. C., Vrijhof, C. I., ... & van IJzendoorn, M. H. (2016). Efficacy of the Video-feedback Intervention to promote Positive Parenting and Sensitive Discipline in Twin Families (VIPP-Twins): Study protocol for a randomized controlled trial. BMC Psychology, 4(1), 1-11. https://doi.org/10.1186/s40359-016-0139-y
Additional info (URL)
Additional information
Contributors	Wierenga, Lara Leiden University Achterberg, Michelle Leiden University, Erasmus University Rotterdam
Time method	Longitudinal
Universe	Same-sex (51% girls), mono- and dizygotic twins between 3 and 16 years old, and their parents (primary parent and other parent). Children in the early childhood cohort (ECC; N = 476) were followed from 3 to 9 years of age, whereas children in the middle childhood cohort (MCC; N = 514) were followed from 7 to 16 years. All participants lived in the Netherlands (within two hours travel time from Leiden). The majority of the participants were Caucasian (ECC: 88%, MCC: 90%). Additionally, participants had both a low, middle-, as well as a high socio-economic status (ECC: 7–37–56%, MCC: 9–46–45%). To be eligible to participate, potential participants had to be fluent in Dutch, their parents and grandparents had to be born in Europe (because of genetic analyses), and the twins should have the same gender. Excluded were children with a congenital disability, psychological disorder, chronic illness, hereditary disease, or a visual or hearing impairment if the disorder disabled the child from performing the behavioral tasks or from participating in the (f)MRI or EEG/ERP measure. Children with a previously diagnosed intellectual disability (IQ < 70), history of neurological or psychiatric illness and/or use of psychotropic medications were also excluded. Lastly, contraindications for fMRI, including metal implants, heart arrhythmia, and claustrophobia would lead to exclusion as well.

Alternate title	ecc
Description	The Early Childhood Cohort of the Leiden Consortium on Individual Development (L-CID) is a large-scale longitudinal intervention study in which +-250 families with same-sex twins, aged 3-4 at wave 1, are followed over a six year period. Annual assessments consist of alternating lab- or home visits during which behavioral and neurobiological data are collected. The collected data allow, among others, for testing which child characteristics shape the effect of (manipulated) environmental factors. The aim of the Early Childhood Cohort is twofold: 1. To investigate the development of social competence and behavioral control in children between 3 and 9 years old; 2. To dissect the reason why not all children are equally responsive to variations in the social environment.
Purpose	The primary aim of the Early Childhood Cohort of the Leiden Consortium on Individual Development (L-CID) study is to increase our understanding of the developmental pathways of social behavior and behavioral control that are important to the development of social competence, from early childhood to middle childhood. If we better understand the mechanisms involved in developmental processes of social competence, this allows us to understand optimal conditions that add to the well-being of developing individuals.
Publisher	Leiden University Leiden University Medical Center
Creators	van IJzendoorn, Marinus Leiden University, Erasmus University Rotterdam, University of Cambridge Crone, Eveline Leiden University, Erasmus University Rotterdam Bakermans-Kranenburg, Marian Leiden University, Vrije Universiteit Amsterdam Engels, Rutger Leiden University, Erasmus University Rotterdam
Language	NL
Cohort international identifier
Funding information	Dutch Research Council 024.001.003 Funder identifier https://ror.org/04jsz6e67 ROR Identifier type URI https://ror.org/ Funder award title Gravitation program Funder award URI
Cohort reference papers
Classification
Contact information
Waves
Contributors	Wierenga, Lara Leiden University Achterberg, Michelle Leiden University, Erasmus University Rotterdam
References	Crone, E. A., Achterberg, M., Dobbelaar, S., Euser, S., van den Bulk, B., van der Meulen, M., ... & van IJzendoorn, M. H. (2020). Neural and behavioral signatures of social evaluation and adaptation in childhood and adolescence: the Leiden consortium on individual development (L-CID). Developmental Cognitive Neuroscience, 45, 100805. https://doi.org/10.1016/j.dcn.2020.100805 Euser, S., Bakermans-Kranenburg, M. J., van den Bulk, B. G., Linting, M., Damsteegt, R. C., Vrijhof, C. I., ... & van IJzendoorn, M. H. (2016). Efficacy of the Video-feedback Intervention to promote Positive Parenting and Sensitive Discipline in Twin Families (VIPP-Twins): Study protocol for a randomized controlled trial. BMC Psychology, 4(1), 1-11. https://doi.org/10.1186/s40359-016-0139-y
Country code	NL
Geographic location
Lowest geographic reference
Highest geographic reference	country
Cohort universe description	3-9 year old same-sex twin pairs and their parents
Analysis unit
Additional info (URL)
Additional information
Time method	Longitudinal.CohortEventBased

Alternate title	mcc
Description	The Middle Childhood Cohort of the Leiden Consortium on Individual Development (L-CID) is a large-scale longitudinal intervention study in which +- 250 families with same-sex twins, aged 7-8 at wave 1, are followed over a six year period. Annual assessments consist of alternating lab- or home visits during which behavioral and neurobiological data are collected. The collected data allow, among others, for testing which child characteristics shape the effect of (manipulated) environmental factors. The aim of the Middle Childhood Cohort is twofold: 1. To investigate the development of social competence and behavioral control in children between 7 and 14 years old; 2. To dissect the reason why not all children are equally responsive to variations in the social environment.
Purpose	The primary aim of the Middle Childhood Cohort of the Leiden Consortium on Individual Development (L-CID) study is to increase our understanding of the developmental pathways of social behavior and behavioral control that are important to the development of social competence, from middle childhood to young adulthood. If we better understand the mechanisms involved in developmental processes of social competence, this allows us to understand optimal conditions that add to the well-being of developing individuals.
Publisher	Leiden University Leiden University Medical Center
Creators	van IJzendoorn, Marinus Leiden University, Erasmus University Rotterdam, University of Cambridge Crone, Eveline Leiden University, Erasmus University Rotterdam Bakermans-Kranenburg, Marian Leiden University, Vrije Universiteit Amsterdam Engels, Rutger Leiden University, Erasmus University Rotterdam
Language	NL
Cohort international identifier
Funding information	Dutch Research Council 024.001.003 Funder identifier https://ror.org/04jsz6e67 ROR Identifier type URI https://ror.org/ Funder award title Gravitation program Funder award URI
Cohort reference papers
Classification
Contact information
Waves
Contributors	Wierenga, Lara Leiden University Achterberg, Michelle Leiden University, Erasmus University Rotterdam van der Meulen, Mara Leiden University
References	Crone, E. A., Achterberg, M., Dobbelaar, S., Euser, S., van den Bulk, B., van der Meulen, M., ... & van IJzendoorn, M. H. (2020). Neural and behavioral signatures of social evaluation and adaptation in childhood and adolescence: the Leiden consortium on individual development (L-CID). Developmental Cognitive Neuroscience, 45, 100805. https://doi.org/10.1016/j.dcn.2020.100805 Euser, S., Bakermans-Kranenburg, M. J., van den Bulk, B. G., Linting, M., Damsteegt, R. C., Vrijhof, C. I., ... & van IJzendoorn, M. H. (2016). Efficacy of the Video-feedback Intervention to promote Positive Parenting and Sensitive Discipline in Twin Families (VIPP-Twins): Study protocol for a randomized controlled trial. BMC Psychology, 4(1), 1-11. https://doi.org/10.1186/s40359-016-0139-y
Country code	NL
Geographic location
Lowest geographic reference
Highest geographic reference	country
Cohort universe description	7-14 year old same-sex twin pairs and their parents
Analysis unit
Additional info (URL)
Additional information
Time method	Longitudinal.CohortEventBased

Measure was collected within the following wave(s):

ECC - T5 Wave

Wave alternate title	ecc5, ecc_ses-w05
Short description of the wave	Wave 5 of the Early Childhood Cohort consisted of parent- and child-reported online questionnaires and a lab visit in which 7-9 year old children from about 180 families were observed while performing several tasks. During some of the tasks, brain structure- and activity was measured by means of (functional) Magnetic Resonance Imaging (MRI). Participants were also asked to take measurements (including collecting physiological data) on their own at home for several days after the lab visit.
Type of StudyUnit
Publisher	Leiden University Leiden University Medical Center
Creators	van IJzendoorn, Marinus Leiden University, Erasmus University Rotterdam, University of Cambridge Crone, Eveline Leiden University, Erasmus University Rotterdam Bakermans-Kranenburg, Marian Leiden University, Vrije Universiteit Amsterdam Engels, Rutger Leiden University, Erasmus University Rotterdam
Funding information	024.001.003 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Gravitation program Funder award URI
References
(sub) cohort	L-CID: Early Childhood Cohort
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	2019-02-06
End date wave collection	2019-10-19
Wave universe description	7.0 - 9.0 years
Stage of measurement
Language	NL
Description of physical data product	paper forms/questionnaires, digital files, biomedical samples
Additional info (URL)
Additional information
Contributors	van Drunen, Lina Leiden University, Erasmus University Rotterdam Dobbelaar, Simone Leiden University, Erasmus University Rotterdam Runze, Jana Vrije Universiteit Amsterdam Jacobs-Rijnboutt, Judith Leiden University, Erasmus University Rotterdam Geurts, Lisanne Boer, Olga Erasmus University Rotterdam Dobbinga, Sjoerd Baljé, Veronica

MCC - T1 Wave

Wave alternate title	mcc1, mcc_ses-w01
Short description of the wave	Wave 1 of the Middle Childhood Cohort consisted of parent- and child-reported online questionnaires and a lab visit in which 7-9 year old children from about 250 families were observed while performing several tasks. During some of the tasks, brain structure- and activity was measured by means of (functional) Magnetic Resonance Imaging (MRI). Additionally, physiological samples were taken (e.g., DNA samples). Participants were also asked to take measurements on their own at home for several days after the lab visit.
Type of StudyUnit
Publisher	Leiden University Leiden University Medical Center
Creators	van IJzendoorn, Marinus Leiden University, Erasmus University Rotterdam, University of Cambridge Crone, Eveline Leiden University, Erasmus University Rotterdam Bakermans-Kranenburg, Marian Leiden University, Vrije Universiteit Amsterdam Engels, Rutger Leiden University, Erasmus University Rotterdam
Funding information	024.001.003 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Gravitation program Funder award URI
References
(sub) cohort	L-CID: Middle Childhood Cohort
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	2015-06-16
End date wave collection	2016-08-27
Wave universe description	7.0 - 9.0 years
Stage of measurement
Language	NL
Description of physical data product	paper forms/questionnaires, digital files, biomedical samples
Additional info (URL)
Additional information
Contributors	Achterberg, Michelle Leiden University, Erasmus University Rotterdam van der Meulen, Mara Leiden University Langhout-van den Bulk, Bianca Erasmus University Rotterdam Bilo, Elisabeth Vrije Universiteit Amsterdam Lubbers, Kyra Janmaat, Lizzy Drenth, Nadieh Leiden University Medical Center Euser, Saskia

MCC - T3 Wave

Wave alternate title	mcc3, mcc_ses-w03
Short description of the wave	Wave 3 of the Middle Childhood Cohort consisted of parent- and child-reported online questionnaires and a lab visit in which 9-11 year old children from about 230 families were observed while performing several tasks. During some of the tasks, brain structure- and activity was measured by means of (functional) Magnetic Resonance Imaging (MRI). Additionally, physiological samples were taken (e.g., hair and DNA samples). Participants were also asked to take measurements on their own at home for several days after the lab visit. Furthermore, to experimentally examine social enrichment, we included a parenting intervention, which allows us to investigate causal effects of parenting on social development. Between the 2nd (MCC - T2) and 3rd (MCC - T3) measurement, 40% of the sample received a video feedback intervention to promote positive parenting and sensitive discipline (VIPP-SD).
Type of StudyUnit
Publisher	Leiden University Leiden University Medical Center
Creators	van IJzendoorn, Marinus Leiden University, Erasmus University Rotterdam, University of Cambridge Crone, Eveline Leiden University, Erasmus University Rotterdam Bakermans-Kranenburg, Marian Leiden University, Vrije Universiteit Amsterdam Engels, Rutger Leiden University, Erasmus University Rotterdam
Funding information	024.001.003 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Gravitation program Funder award URI
References
(sub) cohort	L-CID: Middle Childhood Cohort
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	2017-08-27
End date wave collection	2018-09-30
Wave universe description	9.0 - 11.0 years
Stage of measurement
Language	NL
Description of physical data product	paper forms/questionnaires, digital files, biomedical samples
Additional info (URL)
Additional information
Contributors	Achterberg, Michelle Leiden University, Erasmus University Rotterdam van der Meulen, Mara Leiden University van Hees, Debby Janmaat, Lizzy Drenth, Nadieh Leiden University Medical Center Nibbering, Nikki Leiden University de Vet, Sanne Leiden University Bloemen, Tammy Hak, Tanja

MCC - T5 Wave

Wave alternate title	mcc5, mcc_ses-w05
Short description of the wave	Wave 5 of the Middle Childhood Cohort consisted of regular home visits before the start of the Covid-19 pandemic, and digital home visits during the Covid-19 pandemic. In both cases, 11-13 year old children from about 160 families were observed while they performed tasks and they and their parents/caretakers filled out an online questionnaire. Participants also took measurements on their own at home. During the Covid-19 pandemic, however, some tasks were dropped and no (functional) Magnetic Resonance Imaging (MRI) measurements were taken.
Type of StudyUnit
Publisher	Leiden University Leiden University Medical Center
Creators	van IJzendoorn, Marinus Leiden University, Erasmus University Rotterdam, University of Cambridge Crone, Eveline Leiden University, Erasmus University Rotterdam Bakermans-Kranenburg, Marian Leiden University, Vrije Universiteit Amsterdam Engels, Rutger Leiden University, Erasmus University Rotterdam
Funding information	024.001.003 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Gravitation program Funder award URI
References
(sub) cohort	L-CID: Middle Childhood Cohort
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	2019-11-04
End date wave collection	2021-04-28
Wave universe description	11.0 - 13.0 years
Stage of measurement
Language	NL
Description of physical data product	paper forms/questionnaires, digital files, biomedical samples
Additional info (URL)
Additional information
Contributors	van der Meulen, Mara Leiden University van Drunen, Lina Leiden University, Erasmus University Rotterdam Dobbelaar, Simone Leiden University, Erasmus University Rotterdam Zwanenburg, Bram van Mierlo, Daphne Jacobs-Rijnboutt, Judith Leiden University, Erasmus University Rotterdam Geurts, Lisanne Drenth, Nadieh Leiden University Medical Center Dobbinga, Sjoerd Boer, Olga Erasmus University Rotterdam Baljé, Veronica Nielsen, Vibeke Leiden University Huijser, Dorien Utrecht University

MCC - T7 Wave

Wave alternate title	mcc7, mcc_ses-w07
Short description of the wave	Wave 7 of the Middle Childhood Cohort was added as an additional wave of data collection. It consisted of child-reported online questionnaires and a lab visit in which 14-15 year old children performed tasks and filled out more questionnaires. During some of the tasks, brain structure and activity were measured by means of (functional) Magnetic Resonance Imaging (MRI). Contrary to prior waves, this year only the children participated in the study, and not their parents.
Type of StudyUnit
Publisher	Leiden University Leiden University Medical Center
Creators	van IJzendoorn, Marinus Leiden University, Erasmus University Rotterdam, University of Cambridge Crone, Eveline Leiden University, Erasmus University Rotterdam Bakermans-Kranenburg, Marian Leiden University, Vrije Universiteit Amsterdam Engels, Rutger Leiden University, Erasmus University Rotterdam
Funding information	024.001.003 Funder identifier ROR Identifier type URI https://ror.org/ Funder award title Gravitation program Funder award URI
References
(sub) cohort	L-CID: Middle Childhood Cohort
Life stage
Coverage percentage of the measurement for this wave
Start date wave collection	2023-04-01
End date wave collection	2023-10-30
Wave universe description	14.0 - 15.0 years
Stage of measurement
Language	NL
Description of physical data product	paper forms/questionnaires, digital files, biomedical samples
Additional info (URL)
Additional information
Contributors	van Rijn, Lotte Leiden University Koval, Soldado Hengeveld, Nikki Elkhoury, Caroline

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

author	None
author_email	None
creator_user_id	34768773-4537-4d74-8d9d-11e2b32cbbaf
dc_additional_info	At the end of the imaging protocol, resting-state data was acquired when participants had their eyes closed. A total of 142 T2-weighted whole-brain echo-planar images (EPIs) were obtained, which included 2 dummy volumes at the beginning of the scan to account for T1 saturation effects. The imaging parameters used for the resting-state data remained constant throughout the waves and were as follows: a repetition time (TR) of 2.2 seconds, an echo time (TE) of 30 ms, and a flip angle of 80°. The field of view (FOV) was 220.000 mm in the right-left (rl) direction, 220.00 mm in the anterior-posterior (ap) direction, and 111.65 mm in the foot-head (fh) direction. The data was acquired in 37 slices.
dc_analysis_unit	{Individual}
dc_cohort	L-CID
dc_common_id	0122_CD2
dc_instrument_name	Resting state functional Magnetic Resonance Imaging (RS-fMRI)
dc_measure_name	fMRI - Resting State
id	e3cb60e5-1de9-4b83-a2e3-e3c331b8a2d2
isopen	False
license_title	None
maintainer	None
maintainer_email	None
metadata_created	2024-10-17T12:04:21.120122
metadata_modified	2024-10-20T12:29:05.876559
name	5bf1ae4fa8016f4af58b039a398af3e1
notes	Functional magnetic resonance imaging (MRI) is a non-invasive technique for examining brain activity. Resting state fMRI aims to assess spontaneous brain activity using MRI while the participant is at rest, not performing any specific task. It captures ongoing functional connectivity patterns within the brain.
num_resources	0
num_tags	0
organization	{'id': '74e90384-6fe3-44ca-8184-c4d845120a50', 'name': 'l-cid', 'title': 'L-CID', 'type': 'organization', 'description': 'The Leiden Consortium on Individual Development (L-CID) study was founded by Marinus van IJzendoorn, Eveline Crone, Marian Bakermans-Kranenburg and Rutger Engels in 2013. It was developed as one of four work packages of the overarching Consortium on Individual Development (CID). The L-CID study is a large-scale longitudinal intervention study in which 500 families with same-sex twins are followed over a six year period. L-CID has a cohort-sequential design with two cohorts: an early childhood cohort (ECC), aged 3-4 at wave 1, and a middle childhood cohort (MCC), aged 7-8 at wave 1. Annual assessments consist of alternating lab- or home visits during which behavioral and neurobiological data are collected. The collected data allow, among others, for testing which child characteristics shape the effect of (manipulated) environmental factors. The aim of L-CID is twofold: 1. To investigate the development of social competence and behavioral control in children between 3 and 14 years old; 2. To dissect the reason why not all children are equally responsive to variations in the social environment.', 'image_url': 'https://data.individualdevelopment.nl/img/logo_lcid.png', 'created': '2024-10-17T13:43:12.442911', 'is_organization': True, 'approval_status': 'approved', 'state': 'active'}
owner_org	74e90384-6fe3-44ca-8184-c4d845120a50
private	False
state	active
title	fMRI - Resting State
type	measure
cohort	[{'cohort_alternate_title': 'ecc', 'cohort_description': 'The Early Childhood Cohort of the Leiden Consortium on Individual Development (L-CID) is a large-scale longitudinal intervention study in which +-250 families with same-sex twins, aged 3-4 at wave 1, are followed over a six year period. Annual assessments consist of alternating lab- or home visits during which behavioral and neurobiological data are collected. The collected data allow, among others, for testing which child characteristics shape the effect of (manipulated) environmental factors. The aim of the Early Childhood Cohort is twofold: 1. To investigate the development of social competence and behavioral control in children between 3 and 9 years old; 2. To dissect the reason why not all children are equally responsive to variations in the social environment.', 'cohort_language': 'NL', 'cohort_purpose': 'The primary aim of the Early Childhood Cohort of the Leiden Consortium on Individual Development (L-CID) study is to increase our understanding of the developmental pathways of social behavior and behavioral control that are important to the development of social competence, from early childhood to middle childhood. If we better understand the mechanisms involved in developmental processes of social competence, this allows us to understand optimal conditions that add to the well-being of developing individuals.', 'cohort_spatial_country_code': 'NL', 'cohort_spatial_highest_reference': 'country', 'cohort_time_method': 'Longitudinal.CohortEventBased', 'cohort_title': 'L-CID: Early Childhood Cohort', 'cohort_universe': '3-9 year old same-sex twin pairs and their parents', 'cohort_contributor': [{'cohort_contributor': 'Wierenga, Lara', 'cohort_contributor_affiliation': 'Leiden University', 'cohort_contributor_affiliation_identifier': 'https://ror.org/027bh9e22', 'cohort_contributor_affiliation_identifier_scheme': 'ROR', 'cohort_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'cohort_contributor_identifier_schemeuri': 'https://orcid.org/', 'cohort_contributor_identifier_type': 'ORCID', 'cohort_contributor_pid': '0000-0001-9362-563X'}, {'cohort_contributor': 'Achterberg, Michelle', 'cohort_contributor_affiliation': 'Leiden University, Erasmus University Rotterdam', 'cohort_contributor_affiliation_identifier': 'https://ror.org/027bh9e22', 'cohort_contributor_affiliation_identifier_scheme': 'ROR', 'cohort_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'cohort_contributor_identifier_schemeuri': 'https://orcid.org/', 'cohort_contributor_identifier_type': 'ORCID', 'cohort_contributor_pid': '0000-0001-5874-6495'}], 'cohort_creator': [{'cohort_creator_affiliation': 'Leiden University, Erasmus University Rotterdam, University of Cambridge', 'cohort_creator_affiliation_identifier': 'https://ror.org/027bh9e22', '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': 'van IJzendoorn, Marinus', 'cohort_creator_pid': '0000-0003-1144-454X'}, {'cohort_creator_affiliation': 'Leiden University, Erasmus University Rotterdam', 'cohort_creator_affiliation_identifier': 'https://ror.org/027bh9e22', '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': 'Crone, Eveline', 'cohort_creator_pid': '0000-0002-7508-6078'}, {'cohort_creator_affiliation': 'Leiden University, Vrije Universiteit Amsterdam', 'cohort_creator_affiliation_identifier': 'https://ror.org/027bh9e22', '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': 'Bakermans-Kranenburg, Marian', 'cohort_creator_pid': '0000-0001-7763-0711'}, {'cohort_creator_affiliation': 'Leiden University, Erasmus University Rotterdam', 'cohort_creator_affiliation_identifier': 'https://ror.org/027bh9e22', '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': 'Engels, Rutger', 'cohort_creator_pid': '0000-0003-1944-9126'}], 'cohort_funding': [{'cohort_funder': 'Dutch Research Council', 'cohort_funder_award_title': 'Gravitation program', 'cohort_funder_identifier': 'https://ror.org/04jsz6e67', 'cohort_funder_identifier_schemuri': 'https://ror.org/', 'cohort_funder_identifier_type': 'ROR', 'cohort_grant_number': '024.001.003'}], 'cohort_publisher': [{'cohort_publisher_identifier': 'https://ror.org/027bh9e22', 'cohort_publisher_identifier_type': 'ROR', 'cohort_publisher_name': 'Leiden University'}, {'cohort_publisher_identifier': 'https://ror.org/05xvt9f17', 'cohort_publisher_identifier_type': 'ROR', 'cohort_publisher_name': 'Leiden University Medical Center'}], 'cohort_references': [{'cohort_reference_citation': 'Crone, E. A., Achterberg, M., Dobbelaar, S., Euser, S., van den Bulk, B., van der Meulen, M., ... & van IJzendoorn, M. H. (2020). Neural and behavioral signatures of social evaluation and adaptation in childhood and adolescence: the Leiden consortium on individual development (L-CID). Developmental Cognitive Neuroscience, 45, 100805. https://doi.org/10.1016/j.dcn.2020.100805', 'cohort_reference_identifier': 'https://doi.org/10.1016/j.dcn.2020.100805', 'cohort_reference_identifier_type': 'DOI', 'cohort_reference_type': 'IsDescribedBy'}, {'cohort_reference_citation': 'Euser, S., Bakermans-Kranenburg, M. J., van den Bulk, B. G., Linting, M., Damsteegt, R. C., Vrijhof, C. I., ... & van IJzendoorn, M. H. (2016). Efficacy of the Video-feedback Intervention to promote Positive Parenting and Sensitive Discipline in Twin Families (VIPP-Twins): Study protocol for a randomized controlled trial. BMC Psychology, 4(1), 1-11. https://doi.org/10.1186/s40359-016-0139-y', 'cohort_reference_identifier': 'https://doi.org/10.1186/s40359-016-0139-y', 'cohort_reference_identifier_type': 'DOI', 'cohort_reference_type': 'IsDescribedBy'}]}, {'cohort_alternate_title': 'mcc', 'cohort_description': 'The Middle Childhood Cohort of the Leiden Consortium on Individual Development (L-CID) is a large-scale longitudinal intervention study in which +- 250 families with same-sex twins, aged 7-8 at wave 1, are followed over a six year period. Annual assessments consist of alternating lab- or home visits during which behavioral and neurobiological data are collected. The collected data allow, among others, for testing which child characteristics shape the effect of (manipulated) environmental factors. The aim of the Middle Childhood Cohort is twofold: 1. To investigate the development of social competence and behavioral control in children between 7 and 14 years old; 2. To dissect the reason why not all children are equally responsive to variations in the social environment.', 'cohort_language': 'NL', 'cohort_purpose': 'The primary aim of the Middle Childhood Cohort of the Leiden Consortium on Individual Development (L-CID) study is to increase our understanding of the developmental pathways of social behavior and behavioral control that are important to the development of social competence, from middle childhood to young adulthood. If we better understand the mechanisms involved in developmental processes of social competence, this allows us to understand optimal conditions that add to the well-being of developing individuals.', 'cohort_spatial_country_code': 'NL', 'cohort_spatial_highest_reference': 'country', 'cohort_time_method': 'Longitudinal.CohortEventBased', 'cohort_title': 'L-CID: Middle Childhood Cohort', 'cohort_universe': '7-14 year old same-sex twin pairs and their parents', 'cohort_contributor': [{'cohort_contributor': 'Wierenga, Lara', 'cohort_contributor_affiliation': 'Leiden University', 'cohort_contributor_affiliation_identifier': 'https://ror.org/027bh9e22', 'cohort_contributor_affiliation_identifier_scheme': 'ROR', 'cohort_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'cohort_contributor_identifier_schemeuri': 'https://orcid.org/', 'cohort_contributor_identifier_type': 'ORCID', 'cohort_contributor_pid': '0000-0001-9362-563X'}, {'cohort_contributor': 'Achterberg, Michelle', 'cohort_contributor_affiliation': 'Leiden University, Erasmus University Rotterdam', 'cohort_contributor_affiliation_identifier': 'https://ror.org/027bh9e22', 'cohort_contributor_affiliation_identifier_scheme': 'ROR', 'cohort_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'cohort_contributor_identifier_schemeuri': 'https://orcid.org/', 'cohort_contributor_identifier_type': 'ORCID', 'cohort_contributor_pid': '0000-0001-5874-6495'}, {'cohort_contributor': 'van der Meulen, Mara', 'cohort_contributor_affiliation': 'Leiden University', 'cohort_contributor_affiliation_identifier': 'https://ror.org/027bh9e22', 'cohort_contributor_affiliation_identifier_scheme': 'ROR', 'cohort_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'cohort_contributor_identifier_schemeuri': 'https://orcid.org/', 'cohort_contributor_identifier_type': 'ORCID', 'cohort_contributor_pid': '0000-0002-5401-4630'}], 'cohort_creator': [{'cohort_creator_affiliation': 'Leiden University, Erasmus University Rotterdam, University of Cambridge', 'cohort_creator_affiliation_identifier': 'https://ror.org/027bh9e22', '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': 'van IJzendoorn, Marinus', 'cohort_creator_pid': '0000-0003-1144-454X'}, {'cohort_creator_affiliation': 'Leiden University, Erasmus University Rotterdam', 'cohort_creator_affiliation_identifier': 'https://ror.org/027bh9e22', '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': 'Crone, Eveline', 'cohort_creator_pid': '0000-0002-7508-6078'}, {'cohort_creator_affiliation': 'Leiden University, Vrije Universiteit Amsterdam', 'cohort_creator_affiliation_identifier': 'https://ror.org/027bh9e22', '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': 'Bakermans-Kranenburg, Marian', 'cohort_creator_pid': '0000-0001-7763-0711'}, {'cohort_creator_affiliation': 'Leiden University, Erasmus University Rotterdam', 'cohort_creator_affiliation_identifier': 'https://ror.org/027bh9e22', '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': 'Engels, Rutger', 'cohort_creator_pid': '0000-0003-1944-9126'}], 'cohort_funding': [{'cohort_funder': 'Dutch Research Council', 'cohort_funder_award_title': 'Gravitation program', 'cohort_funder_identifier': 'https://ror.org/04jsz6e67', 'cohort_funder_identifier_schemuri': 'https://ror.org/', 'cohort_funder_identifier_type': 'ROR', 'cohort_grant_number': '024.001.003'}], 'cohort_publisher': [{'cohort_publisher_identifier': 'https://ror.org/027bh9e22', 'cohort_publisher_identifier_type': 'ROR', 'cohort_publisher_name': 'Leiden University'}, {'cohort_publisher_identifier': 'https://ror.org/05xvt9f17', 'cohort_publisher_identifier_type': 'ROR', 'cohort_publisher_name': 'Leiden University Medical Center'}], 'cohort_references': [{'cohort_reference_citation': 'Crone, E. A., Achterberg, M., Dobbelaar, S., Euser, S., van den Bulk, B., van der Meulen, M., ... & van IJzendoorn, M. H. (2020). Neural and behavioral signatures of social evaluation and adaptation in childhood and adolescence: the Leiden consortium on individual development (L-CID). Developmental Cognitive Neuroscience, 45, 100805. https://doi.org/10.1016/j.dcn.2020.100805', 'cohort_reference_identifier': 'https://doi.org/10.1016/j.dcn.2020.100805', 'cohort_reference_identifier_type': 'DOI', 'cohort_reference_type': 'IsDescribedBy'}, {'cohort_reference_citation': 'Euser, S., Bakermans-Kranenburg, M. J., van den Bulk, B. G., Linting, M., Damsteegt, R. C., Vrijhof, C. I., ... & van IJzendoorn, M. H. (2016). Efficacy of the Video-feedback Intervention to promote Positive Parenting and Sensitive Discipline in Twin Families (VIPP-Twins): Study protocol for a randomized controlled trial. BMC Psychology, 4(1), 1-11. https://doi.org/10.1186/s40359-016-0139-y', 'cohort_reference_identifier': 'https://doi.org/10.1186/s40359-016-0139-y', 'cohort_reference_identifier_type': 'DOI', 'cohort_reference_type': 'IsDescribedBy'}]}]
dc_DOI	[{'dc_identifier_type': 'DOI', 'dc_pid': '10.60641/nzpq-4k82'}]
dc_constructs	[{'dc_construct': 'physiology'}]
dc_labels	[{'dc_label': 'brain connectivity'}, {'dc_label': 'brain activity'}, {'dc_label': 'brain functioning'}, {'dc_label': 'brain network'}, {'dc_label': 'resting state'}, {'dc_label': 'neuroimaging'}, {'dc_label': 'brain imaging'}, {'dc_label': 'magnetic resonance imaging'}]
dc_measurement_references	[{'dc_measurements_references_citation': 'Achterberg, M., & van der Meulen, M. (2019). Genetic and environmental influences on MRI scan quantity and quality. Developmental Cognitive Neuroscience, 38, 100667. https://doi.org/10.1016/j.dcn.2019.100667\n', 'dc_measurements_references_doi': '10.1016/j.dcn.2019.100667'}, {'dc_measurements_references_citation': 'Achterberg, M., Bakermans-Kranenburg, M. J., van Ijzendoorn, M. H., van der Meulen, M., Tottenham, N., & Crone, E. A. (2018). Distinctive heritability patterns of subcortical-prefrontal cortex resting state connectivity in childhood: A twin study. NeuroImage, 175, 138–149. https://doi.org/10.1016/j.neuroimage.2018.03.076\n', 'dc_measurements_references_doi': '10.1016/j.neuroimage.2018.03.076'}]
dc_modes_of_collection	[{'dc_mode_of_collection': 'MeasurementsAndTests'}]
dc_modes_of_collection_sub	[{'dc_mode_of_collection_sub': 'MRI'}]
measure_age_range	[{'measure_age_month': 84}, {'measure_age_month': 85}, {'measure_age_month': 86}, {'measure_age_month': 87}, {'measure_age_month': 88}, {'measure_age_month': 89}, {'measure_age_month': 90}, {'measure_age_month': 91}, {'measure_age_month': 92}, {'measure_age_month': 93}, {'measure_age_month': 94}, {'measure_age_month': 95}, {'measure_age_month': 96}, {'measure_age_month': 97}, {'measure_age_month': 98}, {'measure_age_month': 99}, {'measure_age_month': 100}, {'measure_age_month': 101}, {'measure_age_month': 102}, {'measure_age_month': 103}, {'measure_age_month': 104}, {'measure_age_month': 105}, {'measure_age_month': 106}, {'measure_age_month': 107}, {'measure_age_month': 108}, {'measure_age_month': 109}, {'measure_age_month': 110}, {'measure_age_month': 111}, {'measure_age_month': 112}, {'measure_age_month': 113}, {'measure_age_month': 114}, {'measure_age_month': 115}, {'measure_age_month': 116}, {'measure_age_month': 117}, {'measure_age_month': 118}, {'measure_age_month': 119}, {'measure_age_month': 120}, {'measure_age_month': 121}, {'measure_age_month': 122}, {'measure_age_month': 123}, {'measure_age_month': 124}, {'measure_age_month': 125}, {'measure_age_month': 126}, {'measure_age_month': 127}, {'measure_age_month': 128}, {'measure_age_month': 129}, {'measure_age_month': 130}, {'measure_age_month': 131}, {'measure_age_month': 132}, {'measure_age_month': 133}, {'measure_age_month': 134}, {'measure_age_month': 135}, {'measure_age_month': 136}, {'measure_age_month': 137}, {'measure_age_month': 138}, {'measure_age_month': 139}, {'measure_age_month': 140}, {'measure_age_month': 141}, {'measure_age_month': 142}, {'measure_age_month': 143}, {'measure_age_month': 144}, {'measure_age_month': 145}, {'measure_age_month': 146}, {'measure_age_month': 147}, {'measure_age_month': 148}, {'measure_age_month': 149}, {'measure_age_month': 150}, {'measure_age_month': 151}, {'measure_age_month': 152}, {'measure_age_month': 153}, {'measure_age_month': 154}, {'measure_age_month': 155}, {'measure_age_month': 156}, {'measure_age_month': 168}, {'measure_age_month': 169}, {'measure_age_month': 170}, {'measure_age_month': 171}, {'measure_age_month': 172}, {'measure_age_month': 173}, {'measure_age_month': 174}, {'measure_age_month': 175}, {'measure_age_month': 176}, {'measure_age_month': 177}, {'measure_age_month': 178}, {'measure_age_month': 179}, {'measure_age_month': 180}]
study	[{'study_alternate_title': ['L-CID', 'Leiden-CID', 'Samen Uniek'], 'study_language': 'NL', 'study_purpose': 'The primary aim of the Leiden-CID study is to increase our understanding of the developmental pathways of social behavior and behavioral control that are important to the development of social competence, from early childhood to young adulthood. If we better understand the mechanisms involved in developmental processes of social competence, this allows us to understand optimal conditions that add to the well-being of developing individuals.', 'study_time_method': 'Longitudinal', 'study_universe': 'Same-sex (51% girls), mono- and dizygotic twins between 3 and 16 years old, and their parents (primary parent and other parent). Children in the early childhood cohort (ECC; N = 476) were followed from 3 to 9\u2009years of age, whereas children in the middle childhood cohort (MCC; N = 514) were followed from 7 to 16 years. All participants lived in the Netherlands (within two hours travel time from Leiden). The majority of the participants were Caucasian (ECC: 88%, MCC: 90%). Additionally, participants had both a low, middle-, as well as a high socio-economic status (ECC: 7–37–56%, MCC: 9–46–45%).\n\nTo be eligible to participate, potential participants had to be fluent in Dutch, their parents and grandparents had to be born in Europe (because of genetic analyses), and the twins should have the same gender. Excluded were children with a congenital disability, psychological disorder, chronic illness, hereditary disease, or a visual or hearing impairment if the disorder disabled the child from performing the behavioral tasks or from participating in the (f)MRI or EEG/ERP measure. Children with a previously diagnosed intellectual disability (IQ < 70), history of neurological or psychiatric illness and/or use of psychotropic medications were also excluded. Lastly, contraindications for fMRI, including metal implants, heart arrhythmia, and claustrophobia would lead to exclusion as well.', 'title': 'Leiden Consortium on Individual Development', 'study_contact': [{'study_contact_affiliation': 'Leiden University, Erasmus University Rotterdam', 'study_contact_mail': 'ecrone@fsw.leidenuniv.nl', 'study_contact_name': 'Eveline Crone'}], 'study_contributor': [{'study_contributor_affiliation': 'Leiden University', 'study_contributor_affiliation_identifier': 'https://ror.org/027bh9e22', 'study_contributor_affiliation_identifier_scheme': 'ROR', 'study_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'study_contributor_identifier_schemeuri': 'https://orcid.org/', 'study_contributor_identifier_type': 'ORCID', 'study_contributor_name': 'Wierenga, Lara', 'study_contributor_pid': '0000-0001-9362-563X'}, {'study_contributor_affiliation': 'Leiden University, Erasmus University Rotterdam', 'study_contributor_affiliation_identifier': 'https://ror.org/027bh9e22', 'study_contributor_affiliation_identifier_scheme': 'ROR', 'study_contributor_affiliation_identifier_schemeuri': 'https://ror.org/', 'study_contributor_identifier_schemeuri': 'https://orcid.org/', 'study_contributor_identifier_type': 'ORCID', 'study_contributor_name': 'Achterberg, Michelle', 'study_contributor_pid': '0000-0001-5874-6495'}], 'study_data_access': [{'study_data_access_URL': 'https://www.developmentmatters.nl/data-access/', 'study_data_access_description': 'L-CID believes that open science is important in improving scientific quality. Therefore, our we make our codebooks, protocols and collected (meta)data accessible to other researchers.'}], 'study_funding': [{'study_funder': 'Dutch Research Council', 'study_funder_award_title': 'Gravitation program', 'study_funder_identifier': 'https://ror.org/04jsz6e67', 'study_funder_identifier_schemuri': 'https://ror.org/', 'study_funder_identifier_type': 'ROR', 'study_grant_number': '024.001.003'}], 'study_principal_investigators': [{'study_pi_affiliation': 'Leiden University, Erasmus University Rotterdam, University of Cambridge', 'study_pi_affiliation_identifier': 'https://ror.org/027bh9e22', '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': 'van IJzendoorn, Marinus', 'study_pi_pid': '0000-0003-1144-454X'}, {'study_pi_affiliation': 'Leiden University, Erasmus University Rotterdam', 'study_pi_affiliation_identifier': 'https://ror.org/027bh9e22', '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': 'Crone, Eveline', 'study_pi_pid': '0000-0002-7508-6078'}, {'study_pi_affiliation': 'Leiden University, Vrije Universiteit Amsterdam', 'study_pi_affiliation_identifier': 'https://ror.org/027bh9e22', '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': 'Bakermans-Kranenburg, Marian', 'study_pi_pid': '0000-0001-7763-0711'}, {'study_pi_affiliation': 'Leiden University, Erasmus University Rotterdam', 'study_pi_affiliation_identifier': 'https://ror.org/027bh9e22', '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': 'Engels, Rutger', 'study_pi_pid': '0000-0003-1944-9126'}], 'study_publisher': [{'study_publisher_identifier': 'https://ror.org/027bh9e22', 'study_publisher_identifier_schemeuri': 'https://ror.org/', 'study_publisher_identifier_type': 'ROR', 'study_publisher_name': 'Leiden University'}, {'study_publisher_identifier': 'https://ror.org/05xvt9f17', 'study_publisher_identifier_schemeuri': 'https://ror.org/', 'study_publisher_identifier_type': 'ROR', 'study_publisher_name': 'Leiden University Medical Center'}], 'study_references': [{'study_reference_citation': 'Crone, E. A., Achterberg, M., Dobbelaar, S., Euser, S., van den Bulk, B., van der Meulen, M., ... & van IJzendoorn, M. H. (2020). Neural and behavioral signatures of social evaluation and adaptation in childhood and adolescence: the Leiden consortium on individual development (L-CID). Developmental Cognitive Neuroscience, 45, 100805. https://doi.org/10.1016/j.dcn.2020.100805', 'study_reference_identifier': 'https://doi.org/10.1016/j.dcn.2020.100805', 'study_reference_identifier_type': 'DOI', 'study_reference_type': 'IsDescribedBy'}, {'study_reference_citation': 'Euser, S., Bakermans-Kranenburg, M. J., van den Bulk, B. G., Linting, M., Damsteegt, R. C., Vrijhof, C. I., ... & van IJzendoorn, M. H. (2016). Efficacy of the Video-feedback Intervention to promote Positive Parenting and Sensitive Discipline in Twin Families (VIPP-Twins): Study protocol for a randomized controlled trial. BMC Psychology, 4(1), 1-11. https://doi.org/10.1186/s40359-016-0139-y', 'study_reference_identifier': 'https://doi.org/10.1186/s40359-016-0139-y', 'study_reference_identifier_type': 'DOI', 'study_reference_type': 'IsDescribedBy'}]}]
wave	[{'wave_alternate_title': ['ecc5', 'ecc_ses-w05'], 'wave_cohort': 'L-CID: Early Childhood Cohort', 'wave_cohort_ckan_id': '417bef0b34e87d5cd148b8bca3c19d76', 'wave_description': 'Wave 5 of the Early Childhood Cohort consisted of parent- and child-reported online questionnaires and a lab visit in which 7-9 year old children from about 180 families were observed while performing several tasks. During some of the tasks, brain structure- and activity was measured by means of (functional) Magnetic Resonance Imaging (MRI). Participants were also asked to take measurements (including collecting physiological data) on their own at home for several days after the lab visit.', 'wave_end_date_collection': '2019-10-19', 'wave_language': 'NL', 'wave_physical_data_product_description': 'paper forms/questionnaires, digital files, biomedical samples', 'wave_start_date_collection': '2019-02-06', 'wave_title': 'ECC - T5', 'wave_universe': '84-108', 'wave_contributor': [{'wave_contributor_affiliation': 'Leiden University, Erasmus University Rotterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/027bh9e22', '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 Drunen, Lina', 'wave_contributor_pid': '0000-0002-6462-8804'}, {'wave_contributor_affiliation': 'Leiden University, Erasmus 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{'wave_publisher_identifier': 'https://ror.org/05xvt9f17', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Leiden University Medical Center'}], 'wave_subject_codes': [{'wave_subject_code': 'C', 'wave_subject_code_translated': 'Child'}]}, {'wave_alternate_title': ['mcc1', 'mcc_ses-w01'], 'wave_cohort': 'L-CID: Middle Childhood Cohort', 'wave_cohort_ckan_id': '69167eb3827c0d244a614196604f10e7', 'wave_description': 'Wave 1 of the Middle Childhood Cohort consisted of parent- and child-reported online questionnaires and a lab visit in which 7-9 year old children from about 250 families were observed while performing several tasks. During some of the tasks, brain structure- and activity was measured by means of (functional) Magnetic Resonance Imaging (MRI). Additionally, physiological samples were taken (e.g., DNA samples). Participants were also asked to take measurements on their own at home for several days after the lab visit.', 'wave_end_date_collection': '2016-08-27', 'wave_language': 'NL', 'wave_physical_data_product_description': 'paper forms/questionnaires, digital files, biomedical samples', 'wave_start_date_collection': '2015-06-16', 'wave_title': 'MCC - T1', 'wave_universe': '84-108', 'wave_contributor': [{'wave_contributor_affiliation': 'Leiden University, Erasmus University Rotterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/027bh9e22', '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': 'Achterberg, Michelle', 'wave_contributor_pid': '0000-0001-5874-6495'}, {'wave_contributor_affiliation': 'Leiden University', 'wave_contributor_affiliation_identifier': 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During some of the tasks, brain structure- and activity was measured by means of (functional) Magnetic Resonance Imaging (MRI). Additionally, physiological samples were taken (e.g., hair and DNA samples). Participants were also asked to take measurements on their own at home for several days after the lab visit. Furthermore, to experimentally examine social enrichment, we included a parenting intervention, which allows us to investigate causal effects of parenting on social development. Between the 2nd (MCC - T2) and 3rd (MCC - T3) measurement, 40% of the sample received a video feedback intervention to promote positive parenting and sensitive discipline (VIPP-SD).', 'wave_end_date_collection': '2018-09-30', 'wave_language': 'NL', 'wave_physical_data_product_description': 'paper forms/questionnaires, digital files, biomedical samples', 'wave_start_date_collection': '2017-08-27', 'wave_title': 'MCC - T3', 'wave_universe': '108-132', 'wave_contributor': [{'wave_contributor_affiliation': 'Leiden University, Erasmus University Rotterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/027bh9e22', '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': 'Achterberg, Michelle', 'wave_contributor_pid': '0000-0001-5874-6495'}, {'wave_contributor_affiliation': 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'wave_cohort': 'L-CID: Middle Childhood Cohort', 'wave_cohort_ckan_id': '69167eb3827c0d244a614196604f10e7', 'wave_description': 'Wave 5 of the Middle Childhood Cohort consisted of regular home visits before the start of the Covid-19 pandemic, and digital home visits during the Covid-19 pandemic. In both cases, 11-13 year old children from about 160 families were observed while they performed tasks and they and their parents/caretakers filled out an online questionnaire. Participants also took measurements on their own at home. During the Covid-19 pandemic, however, some tasks were dropped and no (functional) Magnetic Resonance Imaging (MRI) measurements were taken.', 'wave_end_date_collection': '2021-04-28', 'wave_language': 'NL', 'wave_physical_data_product_description': 'paper forms/questionnaires, digital files, biomedical samples', 'wave_start_date_collection': '2019-11-04', 'wave_title': 'MCC - T5', 'wave_universe': '132-156', 'wave_contributor': [{'wave_contributor_affiliation': 'Leiden University', 'wave_contributor_affiliation_identifier': 'https://ror.org/027bh9e22', '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 Meulen, Mara', 'wave_contributor_pid': '0000-0002-5401-4630'}, {'wave_contributor_affiliation': 'Leiden University, Erasmus University Rotterdam', 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'wave_contributor_affiliation_identifier_scheme': '', 'wave_contributor_affiliation_identifier_schemeuri': '', 'wave_contributor_identifier_schemeuri': '', 'wave_contributor_identifier_type': '', 'wave_contributor_name': 'Zwanenburg, Bram', 'wave_contributor_pid': ''}, {'wave_contributor_affiliation': '', 'wave_contributor_affiliation_identifier': '', 'wave_contributor_affiliation_identifier_scheme': '', 'wave_contributor_affiliation_identifier_schemeuri': '', 'wave_contributor_identifier_schemeuri': '', 'wave_contributor_identifier_type': '', 'wave_contributor_name': 'van Mierlo, Daphne', 'wave_contributor_pid': ''}, {'wave_contributor_affiliation': 'Leiden University, Erasmus University Rotterdam', 'wave_contributor_affiliation_identifier': 'https://ror.org/027bh9e22', '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': 'Jacobs-Rijnboutt, Judith', 'wave_contributor_pid': ''}, {'wave_contributor_affiliation': '', 'wave_contributor_affiliation_identifier': '', 'wave_contributor_affiliation_identifier_scheme': '', 'wave_contributor_affiliation_identifier_schemeuri': '', 'wave_contributor_identifier_schemeuri': '', 'wave_contributor_identifier_type': '', 'wave_contributor_name': 'Geurts, Lisanne', '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': '', 'wave_contributor_identifier_type': '', 'wave_contributor_name': 'Drenth, Nadieh', 'wave_contributor_pid': ''}, {'wave_contributor_affiliation': '', 'wave_contributor_affiliation_identifier': '', 'wave_contributor_affiliation_identifier_scheme': '', 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'wave_creator_affiliation_identifier': 'https://ror.org/027bh9e22', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'van IJzendoorn, Marinus', 'wave_creator_pid': '0000-0003-1144-454X'}, {'wave_creator_affiliation': 'Leiden University, Erasmus University Rotterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/027bh9e22', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Crone, Eveline', 'wave_creator_pid': '0000-0002-7508-6078'}, {'wave_creator_affiliation': 'Leiden University, Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/027bh9e22', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Bakermans-Kranenburg, Marian', 'wave_creator_pid': '0000-0001-7763-0711'}, {'wave_creator_affiliation': 'Leiden University, Erasmus University Rotterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/027bh9e22', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Engels, Rutger', 'wave_creator_pid': '0000-0003-1944-9126'}], 'wave_funding': [{'wave_funder_award_title': 'Gravitation program', 'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '024.001.003'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/027bh9e22', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Leiden University'}, {'wave_publisher_identifier': 'https://ror.org/05xvt9f17', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Leiden University Medical Center'}], 'wave_subject_codes': [{'wave_subject_code': 'C', 'wave_subject_code_translated': 'Child'}]}, {'wave_alternate_title': ['mcc7', 'mcc_ses-w07'], 'wave_cohort': 'L-CID: Middle Childhood Cohort', 'wave_cohort_ckan_id': '69167eb3827c0d244a614196604f10e7', 'wave_description': 'Wave 7 of the Middle Childhood Cohort was added as an additional wave of data collection. It consisted of child-reported online questionnaires and a lab visit in which 14-15 year old children performed tasks and filled out more questionnaires. During some of the tasks, brain structure and activity were measured by means of (functional) Magnetic Resonance Imaging (MRI). Contrary to prior waves, this year only the children participated in the study, and not their parents.', 'wave_end_date_collection': '2023-10-30', 'wave_language': 'NL', 'wave_physical_data_product_description': 'paper forms/questionnaires, digital files, biomedical samples', 'wave_start_date_collection': '2023-04-01', 'wave_title': 'MCC - T7', 'wave_universe': '168-180', 'wave_contributor': [{'wave_contributor_affiliation': 'Leiden University', 'wave_contributor_affiliation_identifier': 'https://ror.org/027bh9e22', '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 Rijn, Lotte', 'wave_contributor_pid': '0000-0001-7991-4793'}, {'wave_contributor_name': 'Koval, Soldado'}, {'wave_contributor_name': 'Hengeveld, Nikki'}, {'wave_contributor_name': 'Elkhoury, Caroline'}], 'wave_creator': [{'wave_creator_affiliation': 'Leiden University, Erasmus University Rotterdam, University of Cambridge', 'wave_creator_affiliation_identifier': 'https://ror.org/027bh9e22', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'van IJzendoorn, Marinus', 'wave_creator_pid': '0000-0003-1144-454X'}, {'wave_creator_affiliation': 'Leiden University, Erasmus University Rotterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/027bh9e22', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Crone, Eveline', 'wave_creator_pid': '0000-0002-7508-6078'}, {'wave_creator_affiliation': 'Leiden University, Vrije Universiteit Amsterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/027bh9e22', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Bakermans-Kranenburg, Marian', 'wave_creator_pid': '0000-0001-7763-0711'}, {'wave_creator_affiliation': 'Leiden University, Erasmus University Rotterdam', 'wave_creator_affiliation_identifier': 'https://ror.org/027bh9e22', 'wave_creator_affiliation_identifier_scheme': 'ROR', 'wave_creator_affiliation_identifier_schemeuri': 'https://ror.org/', 'wave_creator_identifier_schemeuri': 'https://orcid.org/', 'wave_creator_name': 'Engels, Rutger', 'wave_creator_pid': '0000-0003-1944-9126'}], 'wave_funding': [{'wave_funder_award_title': 'Gravitation program', 'wave_funder_identifier_schemuri': 'https://ror.org/', 'wave_funder_identifier_type': 'ROR', 'wave_grant_number': '024.001.003'}], 'wave_publisher': [{'wave_publisher_identifier': 'https://ror.org/027bh9e22', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Leiden University'}, {'wave_publisher_identifier': 'https://ror.org/05xvt9f17', 'wave_publisher_identifier_type': 'ROR', 'wave_publisher_name': 'Leiden University Medical Center'}], 'wave_subject_codes': [{'wave_subject_code': 'C', 'wave_subject_code_translated': 'Child'}]}]
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relationships_as_object	[]
tracking_summary	{'total': 0, 'recent': 0}