- Male college students, followed 3 years, Harvard University, USA, 1957-60
- N = 17
- Non Response:
- 37%: 9 dropouts, incomplete; about the same happiness distribution.
Mood diary kept 30 days and repeated interviews and tests during three years.
- Authors's label
- Happy life history
- Our Classification
- Clinical rank on 'happy - unhappy life story', stressing auto-biographic re- ports and information for three years, concerning past life experiences up to the time of entering college.
Observed Relation with Happiness
Mean daily highest mood : r = +.42
Mean daily average mood : r = +.48
Mean daily lowest mood : r = +.34