Study Downie et al. (2007): study ZZ World samples 1995

Public:

Adults, general public, 90 nations 1995-2005

Survey name:

Pooled surveys

Sample:

Respondents:

N = 100000

Non Response:

Assessment:

Multiple asesment methods

Correlate

Authors's label

GDP

Our Classification

Operationalization

Observed Relation with Happiness