The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.Ĭompeting interests: The authors have declared that no competing interests exist. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.įunding: This research was funded by the American Institutes of Bisexuality ( ) and the United States Department of Agruculture's Federal Formula Funds ( ) given to Cornell University for project NYC-321421. Received: JanuAccepted: JPublished: August 3, 2012Ĭopyright: © 2012 Rieger, Savin-Williams. Because the measure of pupil dilation is less invasive than previous measures of sexual response, it allows for studying diverse age and cultural populations, usually not included in sexuality research.Ĭitation: Rieger G, Savin-Williams RC (2012) The Eyes Have It: Sex and Sexual Orientation Differences in Pupil Dilation Patterns. Possible reasons for these differences are discussed. In contrast, among women, substantial dilation to both sexes was most common in heterosexual-identified women. Among men, substantial dilation to both sexes was most common in bisexual-identified men. In general, self-reported sexual orientation corresponded with pupil dilation to men and women. We assessed the pupil dilation of 325 men and women of various sexual orientations to male and female erotic stimuli. The present study introduces a measure less affected by these limitations. These results, however, are based on measures of genital arousal, which have potential limitations such as volunteer bias and differential measures for the sexes. Recent research suggests profound sex and sexual orientation differences in sexual response.
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