- 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
- Our Classification
- Composite clinical rank order of happi- ness by 6 staff psychologists, based on two years of experience with the sub- jects
Assessed 6 months earlier.
Observed Relation with Happiness
Mean daily highest mood : r = +.44
Mean daily average mood : r = +.71
Mean daily lowest mood : r = +.63