Research on nipple erection shows that men and women perceive female nipple erection to both cue and trigger positive emotions and perceive these women as less intelligent, less moral, and more sexual. Research on nipple erection has not examined what male nipple erection cues or elicits. In this study, male models with and without nipple erection were used as stimuli and men and women were asked what emotions these stimuli elicited, what they expected and were willing to do for these men, and their presumed sexual experiences. Just as with female nipple erection, men and women perceived male nipple erection as indicating positive emotions and sexual interest. Men did not differ in their willingness to do favors for or interact with men with nipple erection, but women were less likely to engage in either. In sum, men and women perceive male nipple erection to cue the same emotional states as female nipple erection, but react to it very differently, with men being indifferent and women being avoidant.
Public Significance StatementThis study finds that both men and women perceive male nipple erection to signal positive and sexy emotional states ( just as with female nipple erection). However, men and women react to these stimuli very differently, with men being indifferent to and less willing to help these men, and women being less willing to expect help, give help, or socially interact with these men.