LAUSR

Abstract People glean key information about their potential mates during the early phases of courtship. Here (N = 261) we investigated how much learning “dealmaker” (i.e., positive) and “dealbreaker” (i.e., negative) information changed men and women's interest in potential romantic partners. We derived hypotheses from prospect theory and error management theory about loss aversion and how personality traits may enable people's sexual agendas. We found that dealbreakers and dealmakers both influenced participants' level of interest, but this effect was larger for dealbreakers (i.e., prospect theory). We found that the difference between dealmakers and dealbreakers was larger among women (i.e., error management theory) and that sex differences in responses to dealbreakers and dealmakers were fully mediated by individual differences in psychopathy, sociosexuality, and disgust. Our discussion focuses on the utility of an evolutionary framework in studying the early stages of relationship formation.