Genetic and environmental influences on sex-typed behavior during the preschool years.
Child Dev
; 76(4): 826-40, 2005.
Article
en En
| MEDLINE
| ID: mdl-16026499
ABSTRACT
The genetic and environmental etiologies of sex-typed behavior were examined during the preschool years in a sample of 3,990 three- to four-year-old twin and non-twin sibling pairs. Results showed moderate genetic and significant shared environmental influence for boys and substantial genetic and moderate shared environmental influence for girls. For both boys and girls, twin-specific shared environmental effects contributed to twins' similarity in gender role behavior and accounted for approximately 22% of the shared environmental variance. These findings extend previous research conducted with older samples by showing not only important genetic contributions to gender role behavior but also an important role for shared environment. The inclusion of non-twin siblings showed that some of the shared environmental influence is specific to twins.
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Bases de datos:
MEDLINE
Asunto principal:
Medio Social
/
Estereotipo
/
Gemelos
/
Identidad de Género
/
Genotipo
Tipo de estudio:
Etiology_studies
/
Incidence_studies
/
Observational_studies
/
Risk_factors_studies
Límite:
Child, preschool
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Child Dev
Año:
2005
Tipo del documento:
Article
País de afiliación:
Reino Unido