Study Ouweneel & Veenhoven (1994): study ZZ 1980

Public

Adults, general public, 27 nations, ±1980

Sample

Respondents

N = 27

Non Response

n.a.

Assessment

Interview: face-to-face
Most studies used face-to-face interviews

Correlate

Authors's Label

Level of education in nation

Our Classification

Operationalization

Index of:
- primary school enrollment ratio
- first level pupil/teacher ratio
- % adult illiteracy
- % GNP in education  

Source:Estes, R.J.-The social progress of nations (1984, N.Y., Praeger)

Observed Relation with Happiness