Study McGrade (1968): study US 1963
- Public:
- Infants followed from birth to 8 month, USA, 196?
- Sample:
- Respondents:
- N = 24
- Non Response:
- 46% unattainable.
- Assessment:
-
Questionnaire: paper
Mailed questionnaire and peerratings
Correlate
- Authors's Label
- Activity
- Our Classification
-
-
- Operationalization
- Examination by psychologist. Rated on 9-point scale (Activity: 'inactive -
vigorous' rating scale, from Bayley Infant Behaviour Profile).