Dataset

Pandemic Questionnaire

The Pandemic Questionnaire is a self-developed questionnaire that aims to measure Covid-19-symptoms (e.g., fever, coughing, runny nose), Covid-19-related behaviors (e.g., meeting friends on crowded places, staying home as much as possible), and pandemic-related feelings (e.g., feeling inclined to help others, feelings of stress). The child-report version consists of 22 items, and parent-report version of only 4 items about symptoms and being at-risk.

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Keywords	covid-19 pandemic covid symptoms covid feelings
Constructs	physical health mental health
Waves	Early Childhood Cohort ECC - T6-Covid P1P1 P2P2 8.0 - 10.0 years From 2020-04-23 to 2020-05-10 Middle Childhood Cohort MCC - T5-Covid CC P1P1 P2P2 11.0 - 13.0 years From 2020-04-29 to 2020-05-10
Mode of collection	SelfAdministeredQuestionnaire
Analysis unit	Individual
Instrument name	Pandemic Questionnaire
Measure name	Pandemic Questionnaire
References	Achterberg, M., Dobbelaar, S., Boer, O. D., & Crone, E. A. (2021). Perceived stress as mediator for longitudinal effects of the COVID-19 lockdown on wellbeing of parents and children. Scientific Reports, 11(1). https://doi.org/10.1038/s41598-021-81720-8

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 Funder identifier Funder identifier type Funder identifier type URI Funder award title 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 - T6-Covid Wave

Wave alternate title	ecc6c, ecc_ses-w06c
Short description of the wave	Wave 6 - Covid of the Early Childhood Cohort consisted of online questionnaires that assessed both physical and mental health of 8-10 year old children and their parents/caretakers during the Covid-19 pandemic as reported by about 100 parents/caretakers.
Type of StudyUnit
Publisher	Leiden University Leiden University Medical Center
Creators	Leiden University, Erasmus University Rotterdam, University of Cambridge Leiden University, Erasmus University Rotterdam Leiden University, Vrije Universiteit Amsterdam Leiden University, Erasmus University Rotterdam
Funding information	Dutch Research Council 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	2020-04-23
End date wave collection	2020-05-10
Wave universe description	8.0 - 10.0 years
Stage of measurement
Language	NL
Description of physical data product	digital files
Additional info (URL)
Additional information
Contributors	Achterberg, Michelle Leiden University, Erasmus University Rotterdam Huijser, Dorien Utrecht University

MCC - T5-Covid Wave

Wave alternate title	mcc5c, mcc_ses-w05c
Short description of the wave	Wave 5 - Covid of the Middle Childhood Cohort consisted of online questionnaires that assessed both physical- and mental health in about 100 families during the Covid-19 pandemic in 11-13 year old children and their parents/caretakers.
Type of StudyUnit
Publisher	Leiden University Leiden University Medical Center
Creators	Leiden University, Erasmus University Rotterdam, University of Cambridge Leiden University, Erasmus University Rotterdam Leiden University, Vrije Universiteit Amsterdam Leiden University, Erasmus University Rotterdam
Funding information	Dutch Research Council 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	2020-04-29
End date wave collection	2020-05-10
Wave universe description	11.0 - 13.0 years
Stage of measurement
Language	NL
Description of physical data product	digital questionnaire
Additional info (URL)
Additional information
Contributors	Achterberg, Michelle Leiden University, Erasmus University Rotterdam Jacobs-Rijnboutt, Judith Leiden University, Erasmus University Rotterdam Geurts, Lisanne Huijser, Dorien Utrecht University

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

author	None
author_email	None
creator_user_id	c79f9691-a7b3-4ff2-9bc4-deddfe1e04a3
dc_analysis_unit	{Individual}
dc_cohort	L-CID
dc_instrument_name	Pandemic Questionnaire
dc_measure_name	Pandemic Questionnaire
id	e63ef1e9-3b62-43a2-9841-7e5d7a255c8a
isopen	False
license_title	None
maintainer	None
maintainer_email	None
metadata_created	2024-06-05T12:15:52.016683
metadata_modified	2024-06-20T09:26:16.428684
name	14896d534bc21fe9b33ffecc0931879a
notes	The Pandemic Questionnaire is a self-developed questionnaire that aims to measure Covid-19-symptoms (e.g., fever, coughing, runny nose), Covid-19-related behaviors (e.g., meeting friends on crowded places, staying home as much as possible), and pandemic-related feelings (e.g., feeling inclined to help others, feelings of stress). The child-report version consists of 22 items, and parent-report version of only 4 items about symptoms and being at-risk.
num_resources	0
num_tags	0
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owner_org	e42529dd-21ab-40dd-bdae-7a02f582c6e4
private	False
state	active
title	Pandemic Questionnaire
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. 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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': 'van IJzendoorn, Marinus', '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_pid': '0000-0003-1144-454X'}, {'cohort_creator': 'Crone, Eveline', '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_pid': '0000-0002-7508-6078'}, {'cohort_creator': 'Bakermans-Kranenburg, Marian', '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_pid': '0000-0001-7763-0711'}, {'cohort_creator': 'Engels, Rutger', '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_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/yc67-v540'}]
dc_constructs	[{'dc_construct': 'physical health'}, {'dc_construct': 'mental health'}]
dc_labels	[{'dc_label': 'covid-19'}, {'dc_label': 'pandemic'}, {'dc_label': 'covid symptoms'}, {'dc_label': 'covid feelings'}]
dc_measurement_references	[{'dc_measurements_references_citation': 'Achterberg, M., Dobbelaar, S., Boer, O. D., & Crone, E. A. (2021). Perceived stress as mediator for longitudinal effects of the COVID-19 lockdown on wellbeing of parents and children. Scientific Reports, 11(1). https://doi.org/10.1038/s41598-021-81720-8\n', 'dc_measurements_references_doi': '10.1038/s41598-021-81720-8'}]
dc_modes_of_collection	[{'dc_mode_of_collection': 'SelfAdministeredQuestionnaire'}]
measure_age_range	[{'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': 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}]
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_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': ['ecc6c', 'ecc_ses-w06c'], 'wave_cohort': 'L-CID: Early Childhood Cohort', 'wave_cohort_ckan_id': '417bef0b34e87d5cd148b8bca3c19d76', 'wave_description': 'Wave 6 - Covid of the Early Childhood Cohort consisted of online questionnaires that assessed both physical and mental health of 8-10 year old children and their parents/caretakers during the Covid-19 pandemic as reported by about 100 parents/caretakers.', 'wave_end_date_collection': '2020-05-10', 'wave_language': 'NL', 'wave_physical_data_product_description': 'digital files', 'wave_start_date_collection': '2020-04-23', 'wave_title': 'ECC - T6-Covid', 'wave_universe': '96-120', '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': 'Utrecht University', 'wave_contributor_affiliation_identifier': 'https://ror.org/04pp8hn57', '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': 'Huijser, Dorien', 'wave_contributor_pid': '0000-0003-3282-8083'}], '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': 'Dutch Research Council', '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': 'P1P1', 'wave_subject_code_translated': 'Primary parent on self'}, {'wave_subject_code': 'P2P2', 'wave_subject_code_translated': 'Other parent on self'}]}, {'wave_alternate_title': ['mcc5c', 'mcc_ses-w05c'], 'wave_cohort': 'L-CID: Middle Childhood Cohort', 'wave_cohort_ckan_id': '69167eb3827c0d244a614196604f10e7', 'wave_description': 'Wave 5 - Covid of the Middle Childhood Cohort consisted of online questionnaires that assessed both physical- and mental health in about 100 families during the Covid-19 pandemic in 11-13 year old children and their parents/caretakers.', 'wave_end_date_collection': '2020-05-10', 'wave_language': 'NL', 'wave_physical_data_product_description': 'digital questionnaire', 'wave_start_date_collection': '2020-04-29', 'wave_title': 'MCC - T5-Covid', 'wave_universe': '132-156', '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, 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': 'Utrecht University', 'wave_contributor_affiliation_identifier': 'https://ror.org/04pp8hn57', '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': 'Huijser, Dorien', 'wave_contributor_pid': '0000-0003-3282-8083'}], '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': 'Dutch Research Council', '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': 'CC', 'wave_subject_code_translated': 'Child on self'}, {'wave_subject_code': 'P1P1', 'wave_subject_code_translated': 'Primary parent on self'}, {'wave_subject_code': 'P2P2', 'wave_subject_code_translated': 'Other parent on self'}]}]
resources	[]
tags	[]
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relationships_as_subject	[]
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tracking_summary	{'total': 0, 'recent': 0}

Pandemic Questionnaire

Leiden Consortium on Individual Development Cohort study

L-CID: Early Childhood Cohort Cohort

L-CID: Middle Childhood Cohort Cohort

ECC - T6-Covid Wave

MCC - T5-Covid Wave