Study Costa et al. (1987a): study US 1971

Public

25-74 aged, USA, followed 9 years, 1971-1984

Sample

Respondents

N = 4942

Non Response

30%

Assessment

Questionnaire: Paper & Pencil Interview (PAPI)
A booklet completed by participants with help from interviewers if required.

Correlate

Authors's Label

Birth cohort (cross sequentional analysis)

Our Classification

Distribution

N = 4942 (responded both at T1 and T2)

Operationalization

Happiness assessed with 9 year interval:
T1: 1971-75
T2: 1981-84

Observed Relation with Happiness