Study Veenhoven & Vergunst (2014): study ZZ World samples 1946
- Public
- Adult general population 67 nations followed 10 to 40 years 1946 to 2011
- Survey name
- Survey series: findings of which are listed in World Database of Happiness
- Sample
- Respondents
- N = 3000000
- Non Response
- Assessment
-
Multiple assesment methods
Mostly face-to-face interviews
Correlate
- Authors's Label
- Change average happiness
- Our Classification
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-
- Remarks
- 199 time series
- Operationalization
- Difference in responses to equivalent questions on happiness in the same country over the years.
Time series with at least 2 observations of at least 10 years difference.