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What does gay look like? Science keeps trying to figure that out

Last month, Sen. John McCain dropped by “Saturday Night Live,” drawing laughs from his promise, if elected president, to fight expensive federal projects -- such as, he spoofed, a Department of Defense device to "jam gaydar." That was a joke. But 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...

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