Study Treas et al. (2011): study ZZ Developed nations 2001

Public:

Women with partner, aged 18-65, 28 countries, 2001-2004

Sample:

Respondents:

N = 7014

Non Response:

Assessment:

Questionnaire: paper
Oral, paper and pencil resp. postal interview with standardised questionnaire

Correlate

Authors's label

Age

Our Classification

Operationalization

Age in years

Observed Relation with Happiness