About the Authors

H. Andrew Schwartz

hansens@sas.upenn.edu

Affiliations Positive Psychology Center, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America, Computer & Information Science, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America

Johannes C. Eichstaedt

Affiliation Positive Psychology Center, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America

Margaret L. Kern

Affiliation Positive Psychology Center, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America

Lukasz Dziurzynski

Affiliation Positive Psychology Center, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America

Stephanie M. Ramones

Affiliation Positive Psychology Center, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America

Megha Agrawal

Affiliations Positive Psychology Center, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America, Computer & Information Science, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America

Achal Shah

Affiliation Computer & Information Science, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America

Michal Kosinski

Affiliation The Psychometrics Centre, University of Cambridge, Cambridge, United Kingdom

David Stillwell

Affiliation The Psychometrics Centre, University of Cambridge, Cambridge, United Kingdom

Martin E. P. Seligman

Affiliation Positive Psychology Center, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America

Lyle H. Ungar

Affiliation Computer & Information Science, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HAS JCE MLK LHU. Performed the experiments: HAS LD. Analyzed the data: HAS JCE LD SMR MA AS. Contributed reagents/materials/analysis tools: MK DS. Wrote the paper: HAS JCE MLK DS MEPS LHU.