The Effect of Enhancing Prototype Salience on the Accuracy of Categorizing Sexual Orientation from Faces

Recent literature in person perception suggests that sexual orientation and other perceptually-ambiguous group memberships could be discerned from faces with accuracy exceeding chance levels. No study to date has explored the question of how people acquire mental representations of sexual orientation, however. In Study 1, I show that the perception of sexual orientation is distinct from that of obvious group memberships. Then, I show that people can learn prototypical representations of sexual orientation to increase their sensitivity to artificially-generated stimuli (Study 2) and to actual faces (Study 3). Last, I demonstrate that this improvement is a product of participants’ attunement to the patterns of facial features in the prototypes of the two categories. Together, the results demonstrate that people can learn mental representations of sexual orientation through exposure to environmentally relevant stimuli. Furthermore, the studies provide insights about how the mind learns social categories more generally.MAS