Haelermans, Carla http://orcid.org/0000-0002-9202-8427
Article History
Received: 16 July 2021
Revised: 3 December 2021
Accepted: 13 December 2021
First Online: 11 January 2022
Compliance with ethical standards
:
: None.
: The study took place in 2015/2016 and was developed in 2014/2015. In our school ethics approval for research designs was not common back then and therefore, unfortunately, there was no ethics approval asked.
: All participating schools have signed a contract on their willingness to participate and their consent to share data that was necessary for the research. Parents of participating children have been informed about the study via the schools.