Study Bradburn (1969): study US 1963
- Public
 - 21-60 aged, urban areas, USA, 1963 - 64
 - Sample
 - Respondents
 - N = 2787
 - Non Response
 - ± 20%, Attrition ± 30%
 - Assessment
 - 
        Interview: face-to-face                    
Repeated interviews at home using highly structured questionnaires 
Correlate
- Authors's Label
 - Long-term illness
 - Our Classification
 - 
            
 - 
                        
 - Operationalization
 - 2-item index of direct questions on:
1. long-standing physical or health
trouble (yes/no)
2. whether this kept one from doing the
things one might like to do (yes/no) 
Observed Relation with Happiness
Index of Negative Affects: G= +.19 (ns)