Summary of Evidence

Positive emotions broaden the scope of attention and thought-action repertoires

Barbara L. Fredrickson & Christine Branigan
University of Michigan

Published in ?Cognition and Emotion?, 19(3), 313-332, 2005

Positive emotions trigger upward spirals toward emotional well-being

Barbara L. Fredrickson
University of Michigan
Thomas Joiner
Florida State University

Published in ?Psychological Science?, 13, 172-175, 2002

The undoing effect of positive emotions

Barbara L. Fredrickson
Roberta A. Mancuso
Christine Branigan
Michele M. Tugade
University of Michigan

Published in ?Motivation and Emotion?, 24, 237-258, 2000

?Expressions of Positive Emotion in Women?s College Yearbook Pictures and Their Relationship to Personality and Life Outcomes Across Adulthood?

LeeAnne Harker and Dacher Keltner
University of California, Berkeley

Published: Journal of Personality and Social Psychology, (2001), Vol 80(1), 112-124

Positive emotions in early life and longevity: Findings from the Nun study

Deborah D. Danner, David A. Snowdon, and Wallace V. Friesen
University of Kentucky

Published in ?Journal of Personality and Social Psychology?, 2001, 80(5), 804-813

Longevity Increased by Positive Self-Perceptions of Aging

Becca R. Levy and Martin D. Slade Yale University
Suzanne R. Kunkel Miami University
Stanislav V. Kasl Yale University

Published: Journal of Personality and Social Psychology (2002), 83(2), 261-270