Sexual coercion in romantic relationships is a facet of criminal behaviour requiring psychological investigation. The cuckoldry risk hypothesis, that sexual coercion is a tactic used by some males to reduce the risk of cuckoldry by engaging in sperm competition, was developed to account for such behaviour. From this hypothesis, four predictions were generated and empirically tested: (1) males should be more willing to use sexually coercive tactics when the risk of cuckoldry is high; (2) greater instances of cuckoldry risk in the past should be related to greater instances of sexual aggression; (3) cuckoldry risk and sexual jealousy should positively correlate in men; and (4) among males, rape attitudes and arousal are highest when the risk of cuckoldry is high. Theoretical considerations also suggested the following exploratory questions: (1) are factors currently known to be related to general sexual coercion also related to measures of coercion in romantic relationships; and (2) can the cuckoldry risk measures still predict coercion after controlling for psychopathy? In order to test these predictions, a sample of 82 male and 82 female undergraduate students who were sexually active in a heterosexual relationship completed a survey that collected information on demographics, relationship characteristics, arousal, antisociality, and attitudes. Results found: (1) a significant interaction between cuckoldry risk variables in predicting coercion among male participants and not among females; (2) no relationship between past instances of cuckoldry risk and instances of sexual aggression; (3) those who spend proportionally less time away from their partner were more likely to score higher on sexual jealousy; (4) significant interactions in the anticipated direction were found when predicting scores on the Rape Empathy Scale and Rape Myth Acceptance Scale, a trend in the anticipated direction was found when predicting Adversarial Sexual Beliefs, and nonsignificant results were found when predicting Attraction to Sexual Aggression. Results addressing the exploratory questions found that: (1) only psychopathy significantly predicted partner sexual coercion; and (2) cuckoldry risk variables predicted sexual coercion after controlling for psychopathy. Discussion of these results cover: the importance of finding a sex difference; understanding the interaction between variables; how cuckoldry risk impacts rape-supportive thoughts, attitudes, and arousal; the role of sexual jealousy; the function of a cuckoldry risk psychological mechanism; and lastly, the implications on dynamic risk prediction.

Sexual coercion in romantic relationships is a facet of criminal behaviour requiring psychological investigation. The cuckoldry risk hypothesis, that sexual coercion is a tactic used by some males to reduce the risk of cuckoldry by engaging in sperm competition, was developed to account for such behaviour. From this hypothesis, four predictions were generated and empirically tested: (1) males should be more willing to use sexually coercive tactics when the risk of cuckoldry is high; (2) greater instances of cuckoldry risk in the past should be related to greater instances of sexual aggression; (3) cuckoldry risk and sexual jealousy should positively correlate in men; and (4) among males, rape attitudes and arousal are highest when the risk of cuckoldry is high. Theoretical considerations also suggested the following exploratory questions: (1) are factors currently known to be related to general sexual coercion also related to measures of coercion in romantic relationships; and (2) can the cuckoldry risk measures still predict coercion after controlling for psychopathy? In order to test these predictions, a sample of 82 male and 82 female undergraduate students who were sexually active in a heterosexual relationship completed a survey that collected information on demographics, relationship characteristics, arousal, antisociality, and attitudes. Results found: (1) a significant interaction between cuckoldry risk variables in predicting coercion among male participants and not among females; (2) no relationship between past instances of cuckoldry risk and instances of sexual aggression; (3) those who spend proportionally less time away from their partner were more likely to score higher on sexual jealousy; (4) significant interactions in the anticipated direction were found when predicting scores on the Rape Empathy Scale and Rape Myth Acceptance Scale, a trend in the anticipated direction was found when predicting Adversarial Sexual Beliefs, and nonsignificant results were found when predicting Attraction to Sexual Aggression. Results addressing the exploratory questions found that: (1) only psychopathy significantly predicted partner sexual coercion; and (2) cuckoldry risk variables predicted sexual coercion after controlling for psychopathy. Discussion of these results cover: the importance of finding a sex difference; understanding the interaction between variables; how cuckoldry risk impacts rape-supportive thoughts, attitudes, and arousal; the role of sexual jealousy; the function of a cuckoldry risk psychological mechanism; and lastly, the implications on dynamic risk prediction.

There have been few investigations of sexual coercion in relationships. I conducted several studies to develop a measure of partner sexual coercion and to identify its proximate causes and the relevant personal characteristics of male perpetrators. Community participants’ self-reported propensity to engage in various tactics to obtain sex from a reluctant partner clustered into a subscale relating to sexual coercion and a subscale pertaining to sexual coaxing. These subscales had excellent internal reliability, construct validity, criterion validity, and were used to test predictions in subsequent studies. I tested the application of Lalumière et al.’s (2005) three-path model for the development of sexually coercive behavior in general to sexual coercion in relationships. Self-reported interest in partner sexual coercion in a community sample was significantly related to psychopathy, but not age or neurodeveopmental insults. I confirmed the importance of psychopathy in this model by comparing men who raped their partner to other sex offender groups. Another characteristic of sex offenders, sexual deviance, was tested for its application to partner rapists. Unlike non-partner rapists, men who raped their partner exhibited low sexual arousal to rape scenarios, similar to community controls. Cuckoldry risk, a hypothesized proximate cause of partner sexual coercion, was also tested. Direct cues to cuckoldry risk were related to self-reported propensity for partner sexual coercion, whereas indirect cues of cuckoldry risk were related to sexual coaxing. In a forensic sample, most partner rapists had experienced cuckoldry risk prior to committing their offense, and they experienced more cuckoldry risk events than partner assaulters. A necessary condition of the cuckoldry risk hypothesis is that men should exhibit sexual arousal to cues signaling cuckoldry risk. Men in a community sample exhibited as much sexual arousal to stories depicting partner infidelity as they did to stories depicting consenting sex with their partners, and men who were currently in relationships showed greater arousal to stories of infidelity than consenting sex. Taken together, my results suggest psychopathy and cuckoldry risk are important contributors to partner sexual coercion. / Thesis (Ph.D, Psychology) -- Queen's University, 2008-07-16 11:13:04.26