- Undergraduate students, US, 199?
- N = 222
- Non Response:
Daily report of mood and activities during 51 days; peer ratings.
- Authors's label
- Relationships with close friend
- Our Classification
- Self-rating of number of close friends. Rating from 1 to 7 as compared to the average University of Illinois student.
Observed Relation with Happiness
a 10% least happy 4.1
b 27% close to average 5.2
c 10% most happy 6.3