Study Bjornskov et al. (2007): study ZZ 1997

Public:

18+ aged, general public, 74 nations, 1997-2001

Survey name:

WorldValuesSurvey 3

Sample:

Respondents:

N = 120000

Non Response:

Assessment:

Interview: face-to-face

Correlate

Authors's label

Income

Our Classification

Operationalization

Relative income position in country
1: lower income group
2: middle income group
3: upper income group

Observed Relation with Happiness