Study Sacks et al. (2010): study ZZ World samples 2005

Public:

18+ aged general public, 131 nations 2005-2008

Survey name:

INT-Gallup World Poll combined waves

Sample:

Respondents:

N = 291383

Non Response:

Assessment:

Multiple asesment methods
CATI in developed nations, mostly face-to-face in developing nations

Correlate

Authors's label

GDP/capita

Our Classification

Operationalization

Real GDP/capita (log)

Observed Relation with Happiness