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Gay men's bilateral brains better at remembering faces: York U study
Date:6/22/2010

TORONTO, June 22, 2010 Gay men can recall familiar faces faster and more accurately than their heterosexual counterparts because, like women, they use both sides of their brains, according to a new study by York University researchers.

The study, published in the journal, Laterality: Asymmetries of Body, Brain and Cognition, examined the influence of gender, sexual orientation and whether we're right-or-left-handed on our ability to recognize faces. It found that when memorizing and discriminating between faces, homosexual men show patterns of bilaterality the usage of both sides of the brain similar to heterosexual women. Heterosexual men tend to favour the right hemisphere for such tasks.

"Our results suggest that both gay men and heterosexual women code faces bilaterally. That allows for faster retrieval of stored information," says study lead author Jennifer Steeves, Associate Professor, Department of Psychology, Faculty of Health.

Study participants were asked to memorize photographs of ten faces, and differentiate them from 50 others, shown to them for only milliseconds each. The images were rendered in black and white and edited to remove ears, hair and blemishes, which can serve as obvious identifying cues. Participants then had to relay which faces were new, as quickly and accurately as possible.

Steeves and her colleagues also investigated the influence of hand dominance on such tasks. They found that left-handed heterosexual participants had better face recognition abilities than left-handed homosexuals, and also outperformed right-handed heterosexuals.

Hand dominance is thought to be linked with both hemispheric functioning and sexual orientation; previous studies have shown that homosexual individuals are 39 per cent more likely to be left-handed.

"Our findings are consistent with what we know about the organization and laterality of how we process faces depending on our gender, sexual
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Contact: Melissa Hughes
mehughes@yorku.ca
416-736-2100 x22097
York University
Source:Eurekalert

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