Correlational findings | World Database of Happiness

Study Plomin et al. (1993): study US Colorado 1986

Public: Same-sex twins, Colorado, United States, followed from 14 to 20 months, 1986-1989
Sample
Respondents: N = 398
Non Response
Assessment: Behavioural observation
At 14 months: observation at home, 2 weeks later observation in laboratory

Authors's Label

Gender

Our Classification

Operationalization

1 male
0 female

Happiness Measure

Statistics

Elaboration / Remarks

DM = -

              14 months   20 months
boys:         M=0.89      M=1.05
girls:        M=1.01      M=1.09
- difference:  -0.12       -0.04

DM = -

              14 months   20 months
boys:         M=4.6       M=4.9
girls:        M=4.9       M=5.0
- difference:  -0.3        -0.1