Funding for this research was provided by:
Technische Universität Chemnitz
First Online: 7 April 2020
Compliance with Ethical Standards
: The authors declare that they have no conflict of interest.
: The data for the two studies are available from the authors on request.
: All studies have been approved by the ethics committee of the Faculty of Behavioral and Social Sciences of the Chemnitz University of Technology and have therefore been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.