- Undergraduate students, US, 199?
- N = 222
- Non Response:
Daily report of mood and activities during 51 days; peer ratings.
- Authors's label
- Time spent alone
- Our Classification
- Self report of mean time spent alone.
Rating scale from 1 'no time' to 10 '8 hours per day'
Observed Relation with Happiness
a 10% least happy 5.8
b 27% close to average 5.0
c 10% most happy 4.4