- Adult, general public, 4 towns, varying in economic prosperity, Illinois, USA, 1962
- N = 2006
- Non Response:
- Interview: face-to-face
- Authors's label
- Contacts with friends other than relatives
- Our Classification
- Closed question on frequency of contact during last week, rated on a 5-point scale: not at all / once / twice.
Observed Relation with Happiness
Unaffected by S.E.S.