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Eye test detects sexual orientation

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Pupil dilation reveals where a person’s sexual response falls on the spectrum from gay to straight.

“We wanted to find an alternative measure that would be an automatic indication of sexual orientation but without being as invasive as previous measures. Pupillary responses are exactly that,” says Gerulf Rieger, lead author and Cornell University postdoctoral associate.

“We can now finally argue that a flexible sexual desire is not simply restricted to women—some men have it, too, and it is reflected in their pupils,” says co-author Ritch Savin-Williams.

Full story at Futurity.

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