Study Koivumaa-Honkanen (1998): study FI 1975

Public:

18-64 aged adult twin pairs, Finland, 1975

Sample:

Respondents:

N = 29444

Non Response:

271

Assessment:

Questionnaire: paper
Mailed questionnaire

Correlate

Authors's Label

Age

Our Classification

Distribution

0=28.9%, 1=31.1%, 2=17.9%, 3=14.0%, 4=8.1%

Operationalization

0:Age 18-24
1:Age 25-34
2:Age 35-44
3:Age 45-54
4:Age 55-64

Observed Relation with Happiness