Study Washburne (1941): study US 1939
- Public
 - Female college students, New York, USA, 194?
 - Sample
 - Respondents
 - N = 238
 - Non Response
 - -
 - Assessment
 - 
        Questionnaire: Paper & Pencil Interview (PAPI)                    
And intelligence test 
Correlate
- Authors's Label
 - Intelligence
 - Our Classification
 - 
            
 - 
                        
 - Operationalization
 - Those below vs those above the 75th percentile of college students in the Ohio State University Psychological Examination - Form 17.
 
Observed Relation with Happiness
Lower among juniors
L-shaped curve: significant among unhappy students only
Lower among juniors
L-shaped curve: significant among unhappy students only