Special Collection Editors: Nick Bowman, Douglas A. Gentile, C. Shawn Green, and Tracy Markle
Action Editor: C. Shawn Green was the action editor for this article.
Acknowledgements: The authors thank Jennifer Wernicke for feedback on the formulation of some items
of the
Design
Element-
Driven
Increased
Social
Media
Use (DED-ISMU) scale developed by Cornelia Sindermann.
Funding: Cornelia Sindermann was funded by the German Academic Exchange Service (Deutscher
Akademischer Austauschdienst) to work at the University of Toledo for 5 months and
conduct the present research project. Christian Montag and Jon D. Elhai supported
Cornelia Sindermann in applying for this scholarship. The funding source had no role
other than financial support.
Disclosures: The authors declare no conflict of interest. For reasons of transparency, Christian
Montag mentions that he has received (to Ulm University and earlier University of
Bonn) grants from agencies such as the German Research Foundation. Christian Montag
has performed grant reviews for several agencies; has edited journal sections and
articles; has given academic lectures in clinical or scientific venues or companies;
and has generated books or book chapters for publishers of mental health texts. For
some of these activities, he received royalties, but never from gaming or social media
companies. Christian Montag mentions that he was part of a discussion circle (Digitalität
und Verantwortung:
https://about.fb.com/de/news/h/gespraechskreis-digitalitaet-und-verantwortung/) debating ethical questions linked to social media, digitalization, and society/democracy
at Facebook. In this context, he received no salary for his activities. Also, he mentions
that he currently functions as independent scientist on the scientific advisory board
of the Nymphenburg group (Munich, Germany). This activity is financially compensated.
Moreover, he is on the scientific advisory board of Applied Cognition (Redford, CA,
United States), an activity which is also compensated. Jon D. Elhai notes that he
receives royalties for several books published on posttraumatic stress disorder (PTSD);
is a paid, full-time faculty member at University of Toledo; occasionally serves as
a paid, expert witness on PTSD legal cases; and receives grant research funding from
the U.S. National Institutes of Health.
Authors Contributions: Cornelia Sindermann contributed in conceptualization, methodology, software, validation,
formal analysis, investigation, data curation, writing of original draft, visualization,
supervision, project administration, funding acquisition. Christian Montag contributed
in conceptualization, writing of review and editing, funding acquisition. Jon D. Elhai
contributed in conceptualization, investigation, writing of review and editing, funding
acquisition.
Data Availability: The data and statistical analysis code (R code) are available on the Open Science
Framework project website: data (
https://osf.io/x9746/;
Sindermann, Montag, & Elhai, 2021) and code (
https://osf.io/rf7zc/). Wording of the
Design
Element-
Driven
Increased
Social
Media
Use (DED-ISMU) scale items is provided in the
Supplemental Material. Wording of other scales is provided in the cited references. The data have not been
used for another publication. Participants of the online survey filled in additional
questionnaires to examine another, independent research question in the future (see
other preregistration to the research project:
https://osf.io/ufd62).
Open Science Disclosures:
The preregistered design and analysis plan (transparent changes notation) are accessible
at
https://osf.io/3m8ab.
[*]
Cornelia Sindermann, Department of Molecular Psychology, Institute of Psychology and
Education, Ulm University, Helmholtzstraße 8/1, 89081 Ulm, Germany cornelia.sindermann@uni-ulm.de