Study Cavalcanti et al. (2009): study ZZ 2005
- Public
 - University students, Brazil and United States, 2005-2006
 - Sample
 - Respondents
 - N = 185
 - Non Response
 - Assessment
 - Questionnaire: Paper & Pencil Interview (PAPI)
 
Correlate
- Authors's Label
 - Income
 - Our Classification
 - 
            
 - 
                        
 - Distribution
 - 
                                                         INCOME in %
Low Middle High
Purdue students 5 62 33
UFPE students 7 81 12 - Related specification variables
 - 
                
 - 
                            
 - Operationalization
 - Single direct question on the income background of the student's family:
2 High income (reference)
1 Middle-income
0 Low Income 
Observed Relation with Happiness
ORLC controlled for:
- nationality
- age
- gender
- employment status
When not controlled for nationality:
USA: OLRC= -1.896 (ns)
UFPE: OLRC= -3.757 (p<.01)
ORLC controlled for:
- nationality
- age
- gender
- employment status
When not controlled for nationality:
USA: OLRC= -0.340 (ns)
Brazil: OLRC= -2.074 (p<.01)