- 21-65 aged general public, City of Utrecht,The Netherlands, 1967
- N = 300
- Non Response:
- 14% unattainable etc.
- Authors's label
- Relative closedness of circle of acquaintances.
- Our Classification
- Question: 'Do your friends and acqaint-
ances also know each other?'
Response categories ranged from
1: no, practically none
5: yes, practically all