Study DeJong-Gierveld (1969): study NL 1965

Public:

30-55 aged, general public, Amsterdam, The Netherlands, 1965

Sample:

Respondents:

N = 600

Non Response:

31%;

Assessment:

Interview: face-to-face
Structured interview and low structured questionnaire at home.

Correlate

Authors's label

Number of married people among 4 closest friends

Our Classification

Operationalization

Direct questions.

Observed Relation with Happiness