Exploring the Impact of Personal and Partner Traits on Sexuality: Sexual Excitation, Sexual Inhibition, and Big Five Predict Sexual Function in Couples

Interplay between sexual excitation and inhibition: impact on sexual function and neural correlates of erotic stimulus processing in women

Background

As outlined by the dual control model (DCM), individual differences in the regulation of sexual arousal following sexual stimulation depend on two distinct neurophysiological processes: sexual excitation (SE) and sexual inhibition (SI). Although associations with sexual function, behavior, and cue processing have been demonstrated in previous research, underlying neural correlates remain insufficiently explored. Moreover, interactive effects of SE/SI as proposed by the DCM, as well as factors impacting SE/SI properties, such as the use of oral contraceptives (OCs), have not received adequate attention in existing research.

Methods

90 healthy, sexually active women (n = 51 using OCs, n = 39 naturally cycling) completed an Emotional-Picture-Stroop-Paradigm (EPSP) while a 64-channel EEG was recorded. LPP amplitudes toward erotic and neutral stimuli were consecutively computed as a marker of motivational salience and approach motivation. Additionally, women provided self-reports of SE/SI and sexual function. Moderation analyses were performed to assess interactive effects of SE/SI in predicting LPP amplitudes and sexual function.

Results

Sexual function was negatively associated with SI levels but unrelated to SE. Higher SI was associated with reduced LPP amplitudes in response to erotic stimuli. This negative association was, however, attenuated for women high in SE, suggesting interactive effects of SE/SI. Furthermore, women using OCs reported lower SE compared to naturally cycling women.

Conclusion

The observed findings provide additional psychophysiological evidence supporting the DCM and underscore the relevance of interactive SE/SI effects in stimulus processing and approach motivation. They also highlight the possible impact of OCs on psychosexual variables that warrants further research.

Erectile Dysfunction, Suspicious Jealousy, and Partner-Directed Behaviors in Heterosexual Romantic Couples

Erectile dysfunction (ED) can have negative consequences for men and their intimate partners. The purpose of the present research was to replicate and extend the results of previous studies concerning the connections that ED has with partner-directed behaviors using a sample of heterosexual romantic couples. Specifically, we used an actor-partner interdependence mediation model to examine whether the associations that ED had with men's mate retention behaviors, partner-directed insults, partner-directed violence, and partner-inflicted injuries were mediated by suspicious jealousy, but not reactive jealousy. These associations were examined in 113 romantic couples, using men's self-reports, and partner-reports provided by their female partners. Results indicated that suspicious jealousy (but not reactive jealousy) mediated the associations that ED had with men's use of partner-directed behaviors, such that higher levels of ED were associated with men experiencing more suspicious jealousy, which, in turn, was associated with more cost-inflicting mate retention behaviors, benefit-provisioning mate retention behaviors, partner-directed insults, partner-directed violence, and partner-inflicted injury. However, there were some discrepancies between the reports provided by men and women such that these associations emerged more consistently in the partner-reports provided by women than in the self-reports provided by men. Discussion addresses evolutionary implications of these findings, as well as limitations of this research and directions for research concerning ED.

The Dual Control Model of Sexual Response: A Scoping Review, 2009-2022

The Dual Control Model proposes that sexual arousal and related processes are dependent on the balance between sexual excitation and sexual inhibition, and that individuals vary in their propensity for these processes. This scoping review provides an overview and discussion of the questionnaires used to measure the propensities for sexual excitation and inhibition, their translation and validation in other languages, and their application in empirical research on topics ranging from sexual desire and arousal, sexual (dys)function, sexual risk taking, asexuality, hypersexuality, and sexual aggression. A total of 152 papers, published between 2009 and 2022 and identified using online databases, were included in this review. The findings, consistent with those reviewed by Bancroft et al. (2009), suggest that sexual excitation is particularly relevant to sexual desire and responsivity and predictive of asexuality and hypersexuality. Sexual inhibition plays a role in sexual dysfunction. sexual risk taking, and sexual aggression, although often in interaction with sexual excitation. Suggestions for the further development of the model and for future studies are discussed.

Predicting Mate Poaching Experiences from Personality Traits Using a Dyadic Analysis

Mate poaching is "behavior intended to attract someone who is already in a romantic relationship." We investigated actor and partner effects of the five-factor personality traits and the dark triad traits on several mate poaching experiences. We used actor-partner interdependence modeling with data secured from both members of 187 heterosexual married, cohabiting and dating couples from Croatia. In a round-robin design, each participant rated their own and their partner's personality traits, and their own poaching experiences. The results showed that men's lower agreeableness had the most consistent relationship with poaching experiences in both men (actor effects) and women (partner effects). The role of other personality traits from the five-factor model was limited to specific aspects of poaching. Regarding the dark triad traits, men's psychopathy and Machiavellianism were the most consistently related to poaching experiences in both men and women, whereas narcissism did not demonstrate a consistent actor or partner effect on poaching. The results showed that men's poaching is associated with their own personality traits, whereas women's poaching with their own and their partner's personality traits. We interpret the results in the context of life history theory and mate switching hypothesis.

Individual and Relationship Predictors of Trajectories of Sexual Function across Adolescent and Young Adult Relationships

Many young adults report poor sexual function, but research typically fails to consider relationship context and how problems might evolve over time. Research is needed to provide insights into how sexual problems are experienced across relationships, as well as the types of sexual function problems associated with various trajectories. We investigated retrospective trajectories of sexual problems across the multiple relationships of 688 young adults (18-24 years) as well as the individual and relationship factors associated with these trajectories. Both persistent suboptimal and optimal trajectories emerged for men and women. However, persistent and variable problematic function trajectories also emerged for women (and not men). Across all individual and relationship factors analyzed, multivariate multinomial regression analysis indicated that higher sexual esteem and more traditional gender beliefs best predicted membership in trajectories capturing better sexual function. Implications are discussed in terms of the need to provide substantive information regarding sexual function to young people as they transition to adulthood.

Newlywed Couples' Own and Partner Sexual Disgust Sensitivities Interact to Predict Their Marital Satisfaction Through Their Sexual Satisfaction

Sex is integral to maintaining a satisfying long-term romantic relationship such as marriage. It is thus important to identify the factors that promote sexual satisfaction in these relationships. To this end, we examined the extent to which a crucial evolved individual difference-sexual disgust sensitivity-impacts people's sexual satisfaction and relationship satisfaction. Using a two-year longitudinal study of 102 newlywed couples (204 individuals), we demonstrated that, rather than exerting main effects, the interaction of both couple members' sexual disgust sensitivities was indirectly associated with marital satisfaction through sexual satisfaction. People whose partners' sexual disgust sensitivities were relatively similar (versus dissimilar) to their own maintained higher levels of sexual satisfaction across the first two years of marriage, which was associated with similarly elevated marital satisfaction. Not only do these findings highlight the importance of integrating evolutionary perspectives and relationship science, they underscore the value of conducting dyadic research to examine the unique intersection of both couple members' characteristics for people's relationship outcomes.

Sexual inhibition and sexual excitation in a sample of Polish women

The contemporary concept of sexual counseling for women with sexual problems, distress, and female sexual dysfunction (FSD) includes tailored medical and/or psychological intervention. The dual control model and the Sexual Excitation/Sexual Inhibition Inventory for Women (SESII-W) are helpful for identifying risk factors and tailoring therapy for FSD. The current study aimed to (1) validate the Polish translation of the SESII-W in a sample of Polish women, and (2) verify the usefulness of the SESII-W in clinical practice. Five hundred nine white women age 18 to 55 years old (M ± SD age = 39.7 ± 11.3 years) were included in this cross-sectional study. Linguistic validation of the Polish translation of the SESII-W was first performed. A battery of tests was then used to evaluate reliability, convergent and discriminant validity, measurement invariances, and correlations between the SESII-W and other measures. Given that the original version of the SESII-W had unsatisfactory model fit, exploratory and confirmatory factor analyses were subsequently performed. Results showed a new final model that included 26 items with seven lower- and two higher-order factors and explained 58.9% of the variance in the data, with CFI = 0.93, RMSEA = 0.05 and χ² = 693.39, p < 0.001. Cronbach’s α was 0.77 for Sexual Excitation (SE) and 0.88 for Sexual Inhibition (SI) scales. A moderate negative association between SI and the presence of FSD according to Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM-5) criteria was noted. SE was positively associated with engaging in risky sexual behaviors, Extraversion and Openness to Experiences traits, and was negatively correlated with relationship quality. Finally, age was negatively correlated with all domains of the SESII-W except Arousal Contingency. SE and SI were both lower in older women as compared to younger once. These results demonstrate that the Polish version of SESII-W shows good psychometric properties. A higher propensity for SI was associated with the presence of sexual problems, distress, and FSD, whereas a higher propensity for SE was associated with greater engagement in risky sexual behaviors and personality type. However, future studies on larger and more diverse populations are required to confirm the replicability of the factor structure of the scale.

Hypersexual Behaviors and Personality Traits in Men with Substance Use Disorders in Iran

The present study was conducted aiming to compare the five-factor model of personality in addicted men with and without hypersexual disorder (HD). The research method was causal-comparative, and the study population included all addicted men who were residents of addiction treatment centers in Tabriz city. 216 male addicts with HD and without HD were compared in 2 groups of 108 members through the Big Five Inventory (BFI-44). Data were analyzed using independent t test, chi-square, multivariate analysis of variance, and SPSS 22 version software for Windows (IBM Corporation, Armonk, NY, USA). The results showed that 2 groups were significantly different in the five-factor model of personality. Addicted men with HD obtained lower scores in agreeableness, conscientiousness, and openness to experience; and obtained higher scores in neuroticism personality dimension in comparison to addicted men without HD. There was no significant difference between the 2 groups in extraversion dimension. These findings indicated that there is a significant difference between the 2 groups in the five-factor model of personality, and addicted men with HD scored higher in neuroticism dimension. Therefore, this study illustrates the need to pay attention to the personality dimension of neuroticism (or emotional instability) as a variable comorbid with HD and substance-related disorders.

The Role of Personality in Sexual and Reproductive Health

Strong evidence suggests that sexual behavior and reproductive success can be predicted by personality traits. Here, I review new studies that have contributed to the understanding of these associations and outline potential avenues for further research. Findings show that extraversion is the most important personality trait in sexual behavior (number of lifetime sexual partners, involvement in casual sex, marital infidelity, condom use, male and female sexual dysfunction, sexual coercion, and sexual harassment) and that neuroticism, agreeableness, and conscientiousness are also associated with these outcomes. Extraversion has emerged as the most important personality trait for fertility in men but appears relatively unimportant for fertility in women. Findings for other personality traits are somewhat mixed, probably because of variations in research design, and further prospective studies are recommended to address potential bidirectional associations. Further research is also needed in adolescent samples, in understudied topic areas (e.g., sexually transmitted infections, biomarkers of fertility), and on personality similarity between sexual partners in samples from both poor and developed nations.