Study Bachman et al. (1978): study US 1966 /1

Public

Public highschool boys followed 8 years from grade 10, USA, 1966-74

Sample

Respondents

N = 2213

Non Response

2.8% at T1, 17.2% at T2, 21.0% at T3, 28.9% at T4, 28.5% at T5

Assessment

Interview: face-to-face
Interviews, tests and questionnaires

Correlate

Authors's Label

Need for self-development

Our Classification

Operationalization

15-item index containing closed questions designed to measure the need for self-development. Scale: 1.00 = low; 5.00 = high need for self-develop-
ment. Assessed at T1, T2, T3 and T4

Observed Relation with Happiness