| Autor: |
Lalumière ML; Law and Mental Health Program, Centre for Addiction and Mental Health, Toronto, Ontario, Canada. martin_lalumiere@camh.net, Blanchard R, Zucker KJ |
| Jazyk: |
angličtina |
| Zdroj: |
Psychological bulletin [Psychol Bull] 2000 Jul; Vol. 126 (4), pp. 575-92. |
| DOI: |
10.1037/0033-2909.126.4.575 |
| Abstrakt: |
Recent findings suggest that sexual orientation has an early neurodevelopmental basis. Handedness, a behavioral marker of early neurodevelopment, has been associated with sexual orientation in some studies but not in others. The authors conducted a meta-analysis of 20 studies that compared the rates of non-right-handedness in 6,987 homosexual (6,182 men and 805 women) and 16,423 heterosexual (14,808 men and 1,615 women) participants. Homosexual participants had 39% greater odds of being non-right-handed. The corresponding values for homosexual men (20 contrasts) and women (9 contrasts) were 34% and 91%, respectively. The results support the notion that sexual orientation in some men and women has an early neurodevelopmental basis, but the factors responsible for the handedness-sexual orientation association require elucidation. The authors discuss 3 possibilities: cerebral laterality and prenatal exposure to sex hormones, maternal immunological reactions to the fetus, and developmental instability. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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