Study Mussen et al. (1980): study US 1928 /1
- Public
- Mothers of preschool-aged-children, Berkeley USA, 1928-68
- Sample
- Respondents
- N = 28
- Non Response
- Assessment
-
Interview: face-to-face
Interviews at age 30 and age 70
Correlate
- Authors's Label
- Happiness at age 30
- Our Classification
-
-
- Operationalization
- T1 happiness (age ± 30) assessed by interviewer ratings of cheerfulness.
Index of two ratings by a psychologist and a psychiatric social worker, who interviewed the subject independently.
T2 happiness (age ± 70) assessed by an index of two independent ratings: one by the interviewer and the other by a clinical psychologist who read the interview protocol.