Study Veenhoven (2005c): study ZZ 1973
- Public
- Adults, general public, EU 8 member states, USA and Japan, 1973-2002
- Sample
- Respondents
- N = 300000
- Non Response
- Assessment
- Interview: face-to-face
Correlate
- Authors's Label
- Trend average happiness
- Our Classification
-
-
- Operationalization
- yearly increase average happiness in nation
Observed Relation with Happiness
B is average yearly change in points on scale 0-10