Study Hagerty (2000): study ZZ Developed nations 1972

Public:

General public, 8 developed countries, 1972-1994

Survey name:

Pooled surveys

Sample:

Respondents:

N = 120000

Non Response:

Assessment:

Interview: face-to-face

Correlate

Authors's label

Mean income

Our Classification

Operationalization

Observed Relation with Happiness