Study Gall et al. (1997): study US 1971
- Public
 - University students, USA, 1971
 - Sample
 - Respondents
 - N = 86
 - Non Response
 - -
 - Assessment
 - 
        Questionnaire: Paper & Pencil Interview (PAPI)                    
And content analysis 
Correlate
- Authors's Label
 - Male sex
 - Our Classification
 - 
            
 - 
                        
 - Operationalization
 - 0 Female
1 Male 
Observed Relation with Happiness
Females : M = 6.4 Mt = 6.0
difference +0.3 +0.3