Nikstat, Amelie http://orcid.org/0000-0002-3135-7139
Riemann, Rainer http://orcid.org/0000-0001-5805-4536
Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (220286500)
Universität Bielefeld
Article History
Received: 21 February 2022
Accepted: 22 October 2022
First Online: 3 November 2022
Declarations
:
: Amelie Nikstat, Rainer Riemann have declared that they have no competing or potential conflict of interest.
: The study was performed in line with the principles of the Declaration of Helsinki and its later amendments and received ethical approval from the German Psychological Association (Deutsche Gesellschaft für Psychologie; protocol numbers: RR 11.2009 and RR 09.2013).
: Informed consent from all twins and parents was obtained and recorded prior to participation during the household interviews.
: Not applicable.