Study Adams (1997): study US 1980
- Public:
- Black Americans, USA, followed from 1980 to 1992
- Sample:
- Respondents:
- N = 623
- Non Response:
- T1: 32%; T2: 19%; T3: 17%; T4:17%
- Assessment:
-
Interview: face-to-face
T1: face to face interviews; T2,T3,T4: telephone interviews
Correlate
- Authors's label
- Stability over time
- Our Classification
-
-
- Operationalization
- Happiness assessed at
T1: 1980
T2: 1987/1988
T3: 1989
T4: 1992