Eyes Reveal Sexual Orientation

Eyes Reveal Sexual Orientation

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Whether you’re gay, straight or somewhere else on the spectrum, the truth of who attracts you could be in your eyes. Pupil dilation is an accurate indicator of sexual orientation, a new study finds. When people look at erotic images and become aroused, their pupils open up in an unconscious reaction that could be used to study orientation and arousal without invasive genital measurements.

The new study is first large-scale experiment to show that pupil dilation matches what people report feeling turned on by, said study researcher Ritch Savin-Williams, a developmental psychologist at Cornell University.

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