APA's header logo
American Psychologist
American Psychologist
Editor: Harris Cooper  
Supplemental Material for
Loneliness Before and During the COVID-19 Pandemic: A Systematic Review With Meta-Analysis
Mareike Ernst ORCID Icon, Daniel Niederer ORCID Icon, Antonia M. Werner ORCID Icon, Sara J. Czaja, Christopher Mikton, Anthony D. Ong ORCID Icon, Tony Rosen, Elmar Brähler ORCID Icon, and Manfred E. Beutel ORCID Icon
American Psychologist, Vol. 77, No. 5, pp. 660–677


This content was submitted by the author as supplemental material for an article published in APA PsycArticles. The content is presented as the author submitted it. APA assumes no liability for errors or omissions and makes no warranties of any kind. APA assumes no responsibility for any reader’s use of the materials. All questions regarding the supplemental material should be directed to the corresponding author of the published article.
The reader is expected to respect the intellectual property of the author and the copyright of the American Psychological Association. The content should not be reused without permission from the author and the American Psychological Association.
© 2023 American Psychological Association..
750 First Street NE, Washington, DC 20002-4242