Study Simmons et al. (1973): study US 1968

Public

Public school pupils age 8-18, Baltimore, USA, 1968

Sample

Respondents

N = 1988

Non Response

27%

Assessment

Interview: face-to-face
Pupils interviewed after school

Correlate

Authors's Label

Age

Our Classification

Operationalization

8-11 / 12-14 / 15-18

Observed Relation with Happiness