Study Stanca (2016): study ZZ 1981
- Public
 - 15+ aged, general public, 100 nations 1981-2014
 - Survey name
 - INT-WorldValuesSurvey 1994-2008
 - Sample
 - Respondents
 - N = 400894
 - Non Response
 - Assessment
 - Interview: face-to-face
 
Correlate
- Authors's Label
 - Number of children
 - Our Classification
 - 
            
 - 
                        
 - Related specification variables
 - 
                
 - 
                            
 - Operationalization
 - 5: 5 children and more
4: 4 children
3: 3 children
2: 2 children
1: 1 child
0: no child 
Observed Relation with Happiness
- gender
- age
- marital status
- education level
- income decile
- employment status