- 21-65 aged general public, City of Utrecht,The Netherlands, 1967
- N = 300
- Non Response:
- 14% unattainable etc.
- Authors's label
- Our Classification
- Difference between educational level and occupational level.
Observed Relation with Happiness
Negative relationship with under-achievement (ns). Only among those of medium education the underachievers are significantly less happy (05).