Name /jlb_qrb822_3060012/820202/Mp_97 03/07/2007 04:48PM Plate # 0 pg 97 # 1 Volume 82, No. 2 THE QUARTERLY REVIEW OF BIOLOGY June 2007 SEXUAL SELECTION FOR MORAL VIRTUES Geoffrey F. Miller Psychology Department, University of New Mexico Albuquerque, New Mexico 87131 USA e-mail:
[email protected] keywords agreeableness, alternative mating strategies, altruism, assortative mating, behavior genetics, commitment, conscientiousness, costly signaling theory, equilibrium selection, emotion, empathy, ethics, evolutionary psychology, fitness indicators, genetic correlations, good genes, good parents, good partners, human courtship, kin selection, kindness, individual differences, intelligence, mate choice, mental health, moral virtues, mutation load, mutual choice, person perception, personality, reciprocal altruism, sexual fidelity, sexual selection, social cognition, virtue ethics “Human good turns out to be the activity of the soul exhibiting excellence.” Aristotle (350 BC) abstract Moral evolution theories have emphasized kinship, reciprocity, group selection, and equilibrium selection. Yet, moral virtues are also sexually attractive. Darwin suggested that sexual attractiveness may explain many aspects of human morality. This paper updates his argument by integrating recent research on mate choice, person perception, individual differences, costly signaling, and virtue ethics. Many human virtues may have evolved in both sexes through mutual mate choice to advertise good genetic quality, parenting abilities, and/or partner traits. Such virtues may include kindness, fidelity, magnanimity, and heroism, as well as quasi-moral traits like conscientiousness, agreeableness, mental health, and intelligence. This theory leads to many testable predictions about the phenotypic features, genetic bases, and social-cognitive responses to human moral virtues. Introduction tility, and longevity (Langlois et al. 2000; Fink MONG HUMANS, attractive bodies may and Penton-Voak 2002).