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Correlational findings

Study Rothbart (1981): study US Oregon 1976

Public:
3-12 months aged infants, Oregon, United States, 197?
Survey name:
Unnamed study
Sample:
Respondents:
N = 215
Non Response:
41%
Assessment:
Behavioural observation

Correlate

Authors's label
Activity Level
Our Classification
Operationalization
Mother's report on child's gross motor activity, including
-  movement of arms and legs
- squirming
- locomotor activity

Each rated:
1  never
2  very rarely
3  less than half the time
4  about half the time
5  more than half the time
6  almost always
7  always

Full list of situations not reported

Observed Relation with Happiness

Happiness Measure Statistics Elaboration / Remarks A-CA-cw-rdf-v-7-a r = +.11 ns at 6 months    (N=93) A-CA-cw-rdf-v-7-a r = +.00 ns at 12 months   (N=106)