- 20-65 aged, general public, The Netherlands, 1968
- N = 1552
- Non Response:
- 34% refusal and unattainable.
- Authors's label
- Satisfaction with friends
- Our Classification
- Closed question rated on an open graphic scale ranging from 'very dissatisfied' to 'very satisfied'.
Observed Relation with Happiness
Lower among medium S.E.S.
Stronger among low educational level.