Abstract

Verbal signals are sometimes used to manipulate the impressions that people form about oneself and others. For the goal of self-enhancement, one can manipulate impressions either by elevating oneself or by derogating others. Five hypotheses about derogation of same-sex competitors were generated from an evolutionary model of human-mate competition. These hypotheses focused on sex differences in the importance that humans attach to external resources, rank, achievements, physical prowess, reproductive value and fidelity. Four studies were conducted to test these hypotheses. In a preliminary study (N = 80), subjects nominated intrasexual derogation tactics they had previously observed. Study 1 (N = 120) examined estimates of the likelihood that men and women would perform each tactic. Study 2 (N = 101) identified the perceived effectiveness of each derogation tactic for men and women. Study 3 (N = 100) used act reports based on self-recording and observer-recording to identify the likelihood of specific persons performing each derogation tactic. Although there were variations across studies and several anomalies, results generally supported the hypotheses based on an evolutionary model of human intrasexual mate competition. Discussion focuses on the importance of discourse and impression manipulation in the evolution of human competition.