“‘This study demonstrates that homosexuals of both sexes show strong cross-sex shifts in brain symmetry,’ says Qazi Rahman, a leading researcher on sexual orientation at Queen Mary college, University of London, UK.
‘The connectivity differences reported in the amygdala are striking.’
‘Paradoxically, it's more informative to look at things that have no direct connection with sexual orientation, and that's where this study scores,’ says Simon LeVay, a prominent US author who in 1991 reported finding differences (pdf) in a part of the brain called the hypothalamus between straight and gay men.
But as Savic herself acknowledges, the study can't say whether the brain differences are inherited, or result from abnormally high or low exposure in the womb to sex hormones such as testosterone.”
"...some scientists are, in a way, working on gaydar, the supposed ability to discern whether a person is homosexual by reading subtle cues from their appearance. Just don't refer to it that way. The preferred term is 'sexual orientation correlates.'
These scientists are searching for innate traits that might not appear to be related to sexual orientation or even to standard clichés. So measuring a subject's shoe size is permissible; asking about ownership of Barbra Streisand albums would be cheating. Some inborn traits might be expected if homosexuality is -- as most scientists believe -- rooted in biology, and they might provide clues about the biological origins of sexual orientation.
Finding and solidifying these links isn't easy. Studies contradict each other, and some promising paths don't pan out....Scientists don't always agree on how to interpret the results, and more progress has been made with regard to men than to women." [more...]
"If the idea of chemically suppressing homosexuality in the womb horrifies you, I have bad news: You won't be in the room when it happens. Parents control medical decisions, and surveys indicate that the vast majority of them would be upset to learn that their child was gay. Already, millions are screening embryos and fetuses to eliminate those of the "wrong" sex. Do you think they won't screen for the 'wrong' sexual orientation, too?"
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