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Correlational findings

Study Schaefer & Bayley (1963): study US 1929

Public
Children followed from age 0 to 18, Berkeley, California, USA, 1929-47
Sample
Respondents
N =
Non Response
13% drop-outs (7 children and their mothers)
Assessment
Multiple assesment methods
Behavioral observation and interviews

Correlate

Authors's Label
Speed of movements
Our Classification
Related specification variables
Operationalization
Expert rating on the basis of observa- tion of expressive behavior on a 7- point 'slow - rapid' scale.
12 ratings between month 10-36.

Observed Relation with Happiness

Happiness Measure Statistics Elaboration / Remarks A-CP-mi-tsb-n-7-a = A-CP-mi-tsb-n-7-a = A-CP-mi-tsb-n-7-a mr = -.07 Boys  10-12:-.18(ns) -.31(ns) -.26(ns) -.39(05)
      13-15:-.05(ns) -.13(ns) -.07(ns) -.29(ns)
      18-24:+.06(ns) -.06(ns) +.35(ns) -.02(ns)
      27-36:+.10(ns) +.05(ns) +.13(ns) +.02(ns)
A-CP-mi-tsb-n-7-a mr = -.01 Girls 10-12:-.02(ns) +.10(ns) +.11(ns) -.07(ns)
      13-15:-.05(ns) +.10(ns) +.28(ns) -.01(ns)
      18-24:+.01(ns) -.04(ns) +.06(ns) -.27(ns)
      27-36:+.02(ns) -.03(ns) -.04(ns) -.27(ns)
A-CP-mi-tsb-n-7-a = Happiness (hedonic level) was rated 12 times be- tween 10-36 months of age. Ratings combined: months 10 + 11 + 12 / 13 + 14 + 15 / 18 + 21 + 24 / 27 + 30 + 36.

             Months   Months   Months   Months
             10-12    13-15    18-24    27-36