We sought to identify emotional reactions to a partner's sexual infidelity and emotional infidelity. In a preliminary study, 53 participants nominated emotional reactions to a partner's sexual and emotional infidelity. In a second study, 655 participants rated each emotion for how likely it was to occur following sexual and emotional infidelity. Principal components analysis revealed 15 emotion components, including Hostile/Vengeful, Depressed, and Sexually aroused. We conducted repeated measures analyses of variance on the 15 components, with participant sex as the between-subjects factor and infidelity type as the withinsubjects factor. A main effect for sex obtained for 9 components. For example, men scored higher on Homicidal/Suicidal, whereas women scored higher on Undesirable/Insecure. A main effect for infidelity type obtained for 12 components. For example, participants endorsed Nauseated/Repulsed as more likely to follow sexual infidelity and Undesirable/Insecure as more likely to follow emotional infidelity. Discussion addresses limitations of this research, and highlights the need for an integrative theory of emotional reactions to infidelity.Marriage occurs in every known culture (Brown, 1991;Epstein & Guttman, 1984;Vandenberg, 1972). So, too, does infidelity. Estimates of infidelity among American married couples range from 26% to 75% (Buss, 1994;Hite, 1987;Kinsey, Pomeroy, & Martin, 1948; Kinsey, Pomeroy, Martin, & Kebhard, 1953). Infidelity is not confined to American or even to Western marriages. In a study of 160 cultures, infidelity was the most frequently cited reason for divorce (Betzig, 1989).Infidelity can have destructive consequences. Suspicion of a partner's infidelity elicits jealousy in men and in women (Buss & Shackelford, 1997;Daly & Wilson, 1988). Sexual jealousy can have particularly disastrous consequences when elicited in men. The most frequent cause of wife-battering COGNITION AND EMOTION, 2000, 14 (5), 643-659 Please send correspondenc e and requests for reprints to Todd K. Shackelford, Florida Atlantic University, Division of Science-Psychology, 2912 College Avenue, Davie, Florida 33314, USA; e-mail: tshackel@fau.edu .The authors thank April Bleske, David Buss, Martie Haselton, Dennis Ward, and Viviana Weekes-Shackelfor d for helpful discussions of this research.
Ó 2000 Psychology Press Ltdhttp://www.tandf.co.uk/journals/pp/02699931.html and wife-killing is male sexual jealousy (Daly, Wilson, & Weghorst, 1982;Wilson & Daly, 1992). Male sexual jealousy also is the cause of many husband-killings. In a sample of 47 murders precipitated by a jealous man, nine of the murdered were men killed in self-defence by women accused of infidelity (Daly et al., 1982).Infidelity is a significant theoretical issue. From an evolutionary perspective (Buss, Larsen, Westen, & Semmelroth, 1992;Buss & Shackelford, 1997), infidelity signals the diversion of important reproductive resources. From an equity perspective (Walster, Walster, & Perscheid, 1978), infidelity signals inequities in a relatio...