• wave YE_ATTEF1

    Study:NTR
    Parent cohort:NTR: Young Netherlands Twin Register
    Publisher: Vrije Universiteit Amsterdam
    This project aimed to examine the etiology of individual differences on attention problems, attention, executive functioning and cognition in preschool children. This project includes the first measurement of a longitudinal study on the source of individual differences in attention, executive functioning, and cognition in children. Behavioral data was...
    Created March 28, 2023 Updated March 28, 2023
  • wave YS_TRIP5

    Study:NTR
    Parent cohort:NTR: Young Netherlands Twin Register
    Publisher: Vrije Universiteit Amsterdam
    The Child Behavior Checklist (CBCL1.5-5) is sent to parents of approximately 5-year old triplets, together with a short general questionnaire on parental and triplet characteristics (e.g., parental employment and religion, triplet school achievements and health).
    Created March 28, 2023 Updated March 28, 2023
  • wave YS_VAL

    Study:NTR
    Parent cohort:NTR: Young Netherlands Twin Register
    Publisher: Vrije Universiteit Amsterdam
    A reference panel for phenotype data was collected to harmonize multiple measures of aggression and other behavioral problems in schoolchildren as part of the ACTION project (Aggression in Children: Unraveling gene-environment interplay to inform Treatment and interventION strategies Consortium; http://www.action-euproject.eu/). Throughout 2016, parents...
    Created March 28, 2023 Updated March 28, 2023
  • wave YS_TRF10

    Study:NTR
    Parent cohort:NTR: Young Netherlands Twin Register
    Publisher: Vrije Universiteit Amsterdam
    The survey for the primary school teachers includes items on the teacher, class and school, functioning of the child, school performance, bullying and victimization (from 2010), and standardized questionnaires on problem behavior, namely the Teacher Report Form (TRF), the short version of the Conners’ Teacher Ratings Scale - Revised (CTRS-R), and the...
    Created March 28, 2023 Updated March 28, 2023
  • wave YE_COG18

    Study:NTR
    Parent cohort:NTR: Young Netherlands Twin Register
    Publisher: Vrije Universiteit Amsterdam
    This project is the fifth measurement of a longitudinal study into the development of intelligence and problem behaviour (waves one and two not included in CD2) to which additional participants were recruited (twins with siblings and their parents). The test protocol consisted of a physical part and a psychological part. Physical measurements included...
    Created March 28, 2023 Updated March 28, 2023
  • wave YS_DHBQ14

    Study:NTR
    Parent cohort:NTR: Young Netherlands Twin Register
    Publisher: Vrije Universiteit Amsterdam
    The Dutch Health and Behavior Questionnaire (DHBQ) was developed at the department of Biological Psychology of the VU University. It is a collection of standardized questions targeting multiple domains. The focus of the survey is on emotional and behavioral problems assessed by the Youth Self-Report (YSR), subjective wellbeing, lifestyle, exercise...
    Created March 28, 2023 Updated March 28, 2023
  • wave YS_TRF7

    Study:NTR
    Parent cohort:NTR: Young Netherlands Twin Register
    Publisher: Vrije Universiteit Amsterdam
    The survey for the primary school teachers includes items on the teacher, class and school, functioning of the child, school performance, bullying and victimization (from 2010), and standardized questionnaires on problem behavior, namely the Teacher Report Form (TRF), the short version of the Conners’ Teacher Ratings Scale - Revised (CTRS-R), and the...
    Created March 28, 2023 Updated March 28, 2023
  • wave YS_DT

    Study:NTR
    Parent cohort:NTR: Young Netherlands Twin Register
    Publisher: Vrije Universiteit Amsterdam
    This project is part of the study on the effects of having a male or female teacher on educational achievement in twins. The sample was selected from a group of twins of whose primary school teacher had filled in the Teacher Report Form (TRF). Parents were asked to report, for all grades, whether the twins attended the same or separate classes and the...
    Created March 28, 2023 Updated March 28, 2023
  • wave YE_ATTEF3

    Study:NTR
    Parent cohort:NTR: Young Netherlands Twin Register
    Publisher: Vrije Universiteit Amsterdam
    This project is part three of a longitudinal twin study on attention and cognition. This project included the measurement eleven years after baseline and particularly focused on performance pressure. Twins that participated in the previous projects as preschoolers or preteens, were invited again, but additional twin pairs were recruited into the project....
    Created March 28, 2023 Updated March 28, 2023
  • wave YC_ACTIONBB1_1

    Study:NTR
    Parent cohort:NTR: Young Netherlands Twin Register
    Publisher: Vrije Universiteit Amsterdam
    This is the first wave of the technical pilot of the ACTION project (Aggression in Children: Unraveling gene-environment interplay to inform Treatment and interventION strategies Consortium; http://www.action-euproject.eu/). The aim of the technical pilot was to test the collection protocols for urine and buccal sample collection in children. The...
    Created March 28, 2023 Updated March 28, 2023
  • wave YS_TRIP4

    Study:NTR
    Parent cohort:NTR: Young Netherlands Twin Register
    Publisher: Vrije Universiteit Amsterdam
    The Child Behavior Checklist was sent to parents of approximately 4-year old triplets, together with a short general questionnaire on parental and triplet characteristics (e.g., parental employment and religion, triplet school achievements and health).
    Created March 28, 2023 Updated March 28, 2023
  • wave YS_TRF12

    Study:NTR
    Parent cohort:NTR: Young Netherlands Twin Register
    Publisher: Vrije Universiteit Amsterdam
    The survey for the primary school teachers includes items on the teacher, class and school, functioning of the child, school performance, bullying and victimization (from 2010), and standardized questionnaires on problem behavior, namely the Teacher Report Form (TRF), the short version of the Conners’ Teacher Ratings Scale - Revised (CTRS-R), and the...
    Created March 28, 2023 Updated March 28, 2023
  • wave YS_TRIP3

    Study:NTR
    Parent cohort:NTR: Young Netherlands Twin Register
    Publisher: Vrije Universiteit Amsterdam
    The Child Behavior Checklist (CBCL1.5-5) is sent to parents of approximately 3-year old triplets, together with a short general questionnaire on parental and triplet characteristics (e.g., parental employment and religion, triplet school achievements and health).
    Created March 28, 2023 Updated March 28, 2023
  • wave YC_BS3

    Study:NTR
    Parent cohort:NTR: Young Netherlands Twin Register
    Publisher: Vrije Universiteit Amsterdam
    The main aim of this project was to explore to what extent genetic and environmental factors explain individual differences in brain development and cognition. The study was a part of a Dutch longitudinal study in which twins, their siblings and their parents were assessed at three years interval. This project included the measurement eight years after...
    Created March 28, 2023 Updated March 28, 2023
  • wave YC_ACTIONBB1_2

    Study:NTR
    Parent cohort:NTR: Young Netherlands Twin Register
    Publisher: Vrije Universiteit Amsterdam
    This is the second wave of the technical pilot of the ACTION project (Aggression in Children: Unraveling gene-environment interplay to inform Treatment and interventION strategies Consortium; http://www.action-euproject.eu/). The aim of the technical pilot was to test the collection protocols for urine and buccal sample collection in children. The...
    Created March 28, 2023 Updated March 28, 2023
  • wave YS_10

    Study:NTR
    Parent cohort:NTR: Young Netherlands Twin Register
    Publisher: Vrije Universiteit Amsterdam
    The YNTR survey 9/10 targets the development of emotional and behavior problems, as assessed by the Child Behavior Checklist 6-18 (CBCL). From 2001 onwards, the Conners’ Parent Rating Scale — Revised (CPRS-R) was also included. In addition, these surveys included items on zygosity, medical conditions, vaccinations, tonsillectomy (from 2005), demographic...
    Created March 28, 2023 Updated March 28, 2023
  • wave YS_5

    Study:NTR
    Parent cohort:NTR: Young Netherlands Twin Register
    Publisher: Vrije Universiteit Amsterdam
    In this project surveys are sent to the mothers around the 5th birth year of the twin. The YNTR survey 5 includes items on child care and school, growth, zygosity, toilet training, asthma and eczema, fine motor coordination, language development, and problem behaviors as assessed by a short version of the Devereux Child Behavior Checklist (DCB). The...
    Created March 28, 2023 Updated March 28, 2023
  • wave YS_TRIP7

    Study:NTR
    Parent cohort:NTR: Young Netherlands Twin Register
    Publisher: Vrije Universiteit Amsterdam
    The Child Behavior Checklist (CBCL6_18) is sent to parents of approximately 7-year old triplets, together with a short general questionnaire on parental and triplet characteristics (e.g., parental employment and religion, triplet school achievements and health).
    Created March 28, 2023 Updated March 28, 2023
  • wave YS_DHBQP

    Study:NTR
    Parent cohort:NTR: Young Netherlands Twin Register
    Publisher: Vrije Universiteit Amsterdam
    The Dutch Health and Behavior Questionnaire (DHBQ) was developed at the department of Biological Psychology of the VU University. It is a collection of standardized questions targeting multiple domains. The focus of the survey is on emotional and behavioral problems assessed by the Youth Self-Report (YSR), subjective wellbeing, lifestyle, exercise...
    Created March 28, 2023 Updated March 28, 2023
  • wave YS_TRIP1_2

    Study:NTR
    Parent cohort:NTR: Young Netherlands Twin Register
    Publisher: Vrije Universiteit Amsterdam
    In 2008, a combination of the triplet surveys at age 1 and 2 was sent to mothers of all triplets. Since 2009, the combined survey 1 and 2 served as the first survey for newly registered triplets. The combined survey comprises items on pregnancy, gestational age, smoking and alcohol consumption during pregnancy, mode of delivery, breastfeeding, attaining...
    Created March 28, 2023 Updated March 28, 2023
You can also access this registry using the API (see API Docs).