Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (HA 1400/17-1, 2)
Article History
Accepted: 14 December 2022
First Online: 6 January 2023
Compliance with Ethical Standards
:
: Kurt Hahlweg is member of the Triple P International Scientific Advisory Committee. The authors have no relevant financial or non-financial interests to disclose.
: Informed consent was obtained from all individual participants included in the study. We thank the families for their participation and Lina Vetter (BSc Psychology) for her pilot work.
: This study was performed in line with the principles of the Declaration of Helsinki. The Human Subjects Protection Board of the German Association of Psychology (DGPs) approved all procedures (WS 12_2010).