Study Buttel et al. (1977): study US Wisconsin 1974
- Public
 - 18+ aged, general public, Winconsin, USA, 1974
 - Sample
 - Respondents
 - N = 548
 - Non Response
 - Assessment
 - 
        Interview: face-to-face                    
Structured interview 
Correlate
- Authors's Label
 - Organizational membership
 - Our Classification
 - 
            
 - 
                        
 - Operationalization
 - Direct question on the organizations the respondent belonged to