Wave 1 of the Early Childhood Cohort consisted of an online questionnaire and a home visit in which participants were observed while performing several tasks. Additionally, participants were asked to take measurements (including collecting physiological data) on their own for several days after the home visit

Subject age
  • 36 months - 4.0 years
Time span From 2014-06-20 to 2015-12-08
Geographic location NL
Marinus van IJzendoorn
Leiden University, Erasmus University Rotterdam, University of Cambridge
Eveline Crone
Leiden University, Erasmus University Rotterdam
Marian Bakermans-Kranenburg
Leiden University, Vrije Universiteit Amsterdam
Rutger Engels
Leiden University, Erasmus University Rotterdam
Bianca Langhout-van den Bulk
Erasmus University Rotterdam
Brigitte van den Berghe
Ilse de Visser
Rachel Vermeulen
Rani Damsteegt
Sanne de Vet
Leiden University
Saskia Euser
Sjoerd Dobbinga
Funding information
Netherlands Organization for Scientific Research
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