- 21-60 aged, urban areas, USA, 1963 - 64
- N = 2787
- Non Response:
- ± 20%, Attrition ± 30%
Repeated interviews at home using highly structured questionnaires
- Authors's label
- White race
- Our Classification
- 0 Negro
Observed Relation with Happiness
Unaffected by educational level.
Stronger at lower income levels, especially among those of high education.