Study Bergheim (2007): study ZZ OECD member states 2005
- Public
 - 14+ aged general public, 22 rich countries, 2005
 - Survey name
 - EU-Combined surveys: ESS+WVS
 - Sample
 - Respondents
 - N = 33000
 - Non Response
 - Assessment
 - Interview: face-to-face
 
Correlate
- Authors's Label
 - High birth rate
 - Our Classification
 - 
            
 - 
                        
 - Remarks
 - Data: Eurostat
 - Operationalization
 - not reported
 
Observed Relation with Happiness
Positive association, coefficient not reported