Parent ratings of EAS temperaments in twins, full siblings, half siblings, and step siblings

Autor:	Saudino, K. J., Mcguire, S., Reiss, D., Hetherington, E. M., Robert Plomin
Rok vydání:	1995
Předmět:	Male Adolescent Models Genetic Sociology and Political Science Social Psychology Twins Twins Monozygotic Personality Assessment Social Environment Twins Dizygotic Humans Sibling Relations Female Child Temperament Personality
Zdroj:	Scopus-Elsevier
ISSN:	1939-1315 0022-3514
DOI:	10.1037/0022-3514.68.4.723
Popis:	A twin/family design was used to explore genetic contributions to personality; to evaluate whether twins and nontwins yield different genetic results; and to test for the presence of contrast effects, the tendency of a rater to contrast one sibling with the other, thereby magnifying existing behavioral differences. The sample consisted of 708 adolescent same-sex sibling pairs from 10 to 18 years of age. Pairs included identical (monozygotic; MZ) and fraternal (dizygotic; DZ) twins, and full siblings in nondivorced families; and full, half, and unrelated siblings in stepfamilies. Mothers and fathers rated the temperament of their children on the EAS Temperament Survey (A. H. BussR. Plomin, 1984). Model-fitting analyses revealed significant genetic influences on each of the four EAS dimensions; however, for some dimensions, heritability estimates were significantly greater for twins than for nontwins. Overall, the data were best described by a sibling interaction model, which indicated significant contrast effects.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::358b83bf336e223214316a2ee0e59224 https://doi.org/10.1037/0022-3514.68.4.723 Zobrazit plný text záznamu