Study Callan (1986): study US California 1981

Public:

Intentionally childless and intentionally parents, California, USA, 198?

Survey name:

Unnamed study

Sample:

Respondents:

N = 76

Non Response:

Assessment:

Questionnaire: paper
not reported, assumed

Correlate

Authors's label

Childless vs Parents

Our Classification

Operationalization

1: parents
0: childless

Observed Relation with Happiness