- Harker, L.A.; Keltner, D.
- Expression of Positive Emotion in Women's Yearbook Pictures and their Relationship to Personality and Life Outcomes across Adulthood.
- Journal of Personality and Social Psychology, 2001, Vol. 80, 112 - 124
- 0022 3514
- English (Australia, Canada, UK, USA)
Eligible for inclusion in findings archive
- No, no valid measure of happiness used.