About the Authors

Lilian Vliek

Roles Conceptualization, Formal analysis, Project administration, Writing – original draft

Lilian@kanjertraining.nl

Affiliation Knowledge Centre of Topper Training Foundation, Almere, The Netherlands

Geertjan Overbeek

Roles Supervision, Validation, Writing – review & editing

Affiliation Research Priority Area Yield, Research Institute of Child Development and Education, University of Amsterdam, Amsterdam, The Netherlands

Bram Orobio de Castro

Roles Supervision, Validation, Writing – review & editing

Affiliation Department of Developmental Psychology, Utrecht University, Utrecht, The Netherlands

Competing Interests

Lilian Vliek works as a psychologist and researcher for Topper Training Foundation. Her position implies a conflict of interest. To guarantee independence, professors from the University of Utrecht in The Netherlands made written agreements with Topper Training Foundation that all results need to be published, positive and negative as part of her PhD project. Data will be anonymously available in Open Science Framework (osf.io/3ke9j), and in all published work the position of the researcher will be stated.