Heppt, Birgit http://orcid.org/0000-0001-9755-9836
Olczyk, Melanie http://orcid.org/0000-0001-5320-9076
Volodina, Anna http://orcid.org/0000-0002-2611-2129
Funding for this research was provided by:
Bundesministerium für Bildung und Forschung (01GJ1704A, 01GJ1704B)
Humboldt-Universität zu Berlin
Article History
Received: 5 January 2022
Accepted: 16 May 2022
First Online: 17 June 2022
Declarations
:
: We have no known conflict of interest to disclose.
: In line with the German regulations for conducting empirical studies in schools, our study was evaluated and approved by the ministries of education of the six participating federal states. This procedure covered scrutiny of all materials used in the study, such as cover letters to schools, teachers, students, and parents (including information on the voluntary nature of participation, etc.), survey materials (questionnaires, tests, items, etc.), and procedures (e.g., for data protection and anonymization). In addition, we received project approval by the Ethics Committee of the University of Bamberg. Informed consent was obtained from all study participants.