Study Bachman et al. (1970): study US 1966
- Public
- Public highschool boys followed 3 years from grade 10, USA, 1966-69
- Survey name
- Unnamed study
- Sample
- Respondents
- N = 1799
- Non Response
- 2.8% incomplete information in 1966
- Assessment
-
Multiple assesment methods
Interviews, test, teacher ratings.
Correlate
- Authors's Label
- Internal control
- Our Classification
-
-
- Operationalization
- 12-item index (items from Rotter's I-E Scale; Rotter, 1966).