Study Palmore et al. (1979): study US Durham, North Carolina 1968
- Public
 - 45-70 aged Durham, USA, followed 6 years 1968-1976
 - Survey name
 - Unnamed study
 - Sample
 - Respondents
 - N = 375
 - Non Response
 - 25.3%
 - Assessment
 - 
        Interview: face-to-face                    
Physician examination T1: 1968/70 T2: 1970/72 T3: 1972/74 T4: 1974/76 
Correlate
- Authors's Label
 - Spouse's retirement
 - Our Classification
 - 
            
 - 
                        
 - Remarks
 - T1: 1968; T4: 1976
 - Distribution
 - N= yes: 78, no: 170
 - Operationalization
 - Retirement of spouce between T1-T4
1 yes
0 no 
Observed Relation with Happiness
b further controled for other life-events in that period
- own retirement
- own medical problems
- spouse died
- last child left home