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Tytuł pozycji:

Genetic and Environmental Influences on Sexual Orientation and Its Correlates in an Australian Twin Sample.

Tytuł:
Genetic and Environmental Influences on Sexual Orientation and Its Correlates in an Australian Twin Sample.
Autorzy:
Bailey, J. Michael
Dunne, Michael P.
Martin, Nicholas G.
Temat:
TWINS
SEXUAL orientation
SEXUAL psychology
GENDER identity
PERSONALITY
Źródło:
Journal of Personality & Social Psychology. Mar2000, Vol. 78 Issue 3, p524-536. 13p. 1 Diagram, 5 Charts, 3 Graphs.
Terminy geograficzne:
AUSTRALIA
Czasopismo naukowe
We recruited twins systematically from the Australian Twin Registry and assessed their sexual orientation and 2 related traits: childhood gender nonconformity and continuous gender identity. Men and women differed in their distributions of sexual orientation, with women more likely to have slight-to-moderate degrees of homosexual attraction, and men more likely to have high degrees of homosexual attraction. Twin concordances for nonheterosexual orientation were lower than in prior studies. Univariate analyses showed that familial factors were important for all traits, but were less successful in distinguishing genetic from shared environmental influences. Only childhood gender nonconformity was significantly heritable for both men and women. Multivariate analyses suggested that the causal architecture differed between men and women, and, for women, provided significant evidence for the importance of genetic factors to the traits' covariation. [ABSTRACT FROM AUTHOR]
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