Study Mussen et al. (1980): study US 1930

Public

Mothers, followed from age 30 to 70, Berkeley, USA, 1930-70

Sample

Respondents

N = 81

Non Response

Assessment

Interview: face-to-face
Extensive interviews between age 30 and 70

Correlate

Authors's Label

Cheerfulness

Our Classification

Operationalization

Rating of cheerfulness (vs gloomy) on 7 point scales by independent interviewers.

T1 (1930): Ratings by two interviewers:
   - Clinical psychologist on the
     basis of an interview
   - Social worker on the basis of
     observations at home and during
     tests of the child at university.
   Inter-rater agreement: r=+.59
T2 (1970): Rating by one interviewer on    the basis of an extensive interview

Observed Relation with Happiness