Study Sondermeyer (1975): study NL 1970
- Public
- 40-60 aged male employees, Rotterdam, The Netherlands, 197?
- Sample
- Respondents
- N = 13000
- Non Response
- 5%
- Assessment
- Questionnaire: Paper & Pencil Interview (PAPI)
Correlate
- Authors's Label
- Laughing and singing often
- Our Classification
-
-
- Operationalization
- Single direct question:
0 No
1 Yes