About the Authors

Barbara L. Fredrickson

blf@unc.edu

Affiliation Department of Psychology, University of North Carolina, Chapel Hill, North Carolina, United States of America

Karen M. Grewen

Affiliation Department of Psychiatry, University of North Carolina School of Medicine, Chapel Hill, North Carolina, United States of America

Sara B. Algoe

Affiliation Department of Psychology, University of North Carolina, Chapel Hill, North Carolina, United States of America

Ann M. Firestine

Affiliation Department of Psychology, University of North Carolina, Chapel Hill, North Carolina, United States of America

Jesusa M. G. Arevalo

Affiliation Department of Medicine, UCLA School of Medicine, Los Angeles, California, United States of America

Jeffrey Ma

Affiliation Department of Medicine, UCLA School of Medicine, Los Angeles, California, United States of America

Steve W. Cole

Affiliations Department of Medicine, UCLA School of Medicine, Los Angeles, California, United States of America, Jonsson Comprehensive Cancer Center, UCLA School of Medicine, Los Angeles, California, United States of America, Norman Cousins Center, UCLA School of Medicine, Los Angeles, California, United States of America, UCLA AIDS Institute, Los Angeles, California, United States of America, UCLA Molecular Biology Institute, Los Angeles, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: BF SA SC. Performed the experiments: BF KG SA AF JA JM SC. Analyzed the data: BF SC. Contributed reagents/materials/analysis tools: SC. Wrote the paper: BF KG SA AF SC.