Study Veenhoven (2005): study ZZ 1990

Public:

Adults, general public, 67 nations, 1990s

Sample:

Respondents:

N = 100000

Non Response:

Assessment:

Interview: face-to-face

Correlate

Authors's Label

Purchasing power per head

Our Classification

Remarks

Data: Human Development Report 1999, table 1 (UNDP)

Operationalization

'Real' GNP (actual buying power) per capita

Observed Relation with Happiness