Pornography has increasingly become a hot topic of discussion in the United States, likely due to its increasing rate of consumption. Recent scholarship has indicated the need to account for factors such as masturbation and sexual desire discrepancy when conducting pornography research. The current study isolated the influence pornography use had on those in heterosexual romantic relationships (N=713 couples) by parsing out the effects of sexual desire discrepancy and masturbation. This was done by using a series of nested actor-partner interdependence models (APIM) to see how the relationships between pornography use and sexual satisfaction changed in each model. Masturbation and sexual desire discrepancy were also investigated as potential moderators for the APIMs to explore the effects the levels of these variables had on that relationship. Results from these analyses demonstrated that the best-fitting model included measures of masturbation, sexual desire discrepancy, and sexual engagement (i.e., controls for the values making up sexual desire discrepancy), and that adding each of these variables to the model significantly changed pornography use's actor and partner effects. Masturbation and sexual desire discrepancy were not found to moderate these relationships. A discussion of the research implications of these findings, the limitations of this study, future directions for research, and clinical implications of this study are also presented.

Malgré le rôle central qu’ils jouent dans la sexualité, le désir sexuel et le comportement sexuel restent mal compris – particulièrement chez les couples. La rareté des résultats empiriques dans ce domaine contribue à l’écart qui existe actuellement entre la recherche en sexualité et la pratique clinique, et peut impacter négativement la qualité des soins disponibles aux nombreux couples qui consultent pour des problèmes de désir sexuel - la plainte la plus courante en thérapie sexuelle. L'objectif des trois articles de cette recherche doctorale était d'aider à combler cette lacune en étudiant le désir sexuel dans le cadre d’une perspective relationnelle. L’hypothèse de départ de ce travail était que le bien-être de chaque partenaire est influencé en interaction avec l’autre partenaire, et que cette influence est médiée en partie par le comportement sexuel du couple. Les résultats obtenus appuient cette hypothèse : Ils suggèrent que les interactions positives pendant les rapports sexuels, telles que les motivations d'approche « pour soi » et « pour l’autre » des deux partenaires et les comportements génitaux et affectifs du couple sont associées à une plus grande satisfaction sexuelle et à un plus fort sentiment d’intimité (étude 1). À l'inverse, les difficultés sexuelles telles que le faible désir sexuel sont associées à des restrictions de comportement sexuel et à l'insatisfaction sexuelle (étude 2). De même, les asynchronies entre partenaires telles que les décalages de désir sexuel sont associées à une plus grande détresse sexuelle (étude 3). Enfin, la troisième étude commence à établir une direction et une portée à ces associations, en suggérant que les problèmes de décalage de désir sexuel prédisent la détresse sexuelle d'un jour à l'autre, et que ces associations quotidiennes sont reflétées par des associations plus distales sur des périodes d’un an ou plus. Ces résultats sont cohérents avec les recherches récentes sur la régulation émotionnelle en sexualité, et plus spécifiquement, avec des modèles où le désir sexuel joue un rôle régulateur, médié par des variations de comportement sexuel. Il est espéré qu'au-delà de ces contributions conceptuelles, la présente recherche sera utile aux cliniciens. En particulier, ces résultats soutiennent les thérapies qui se concentrent sur les interactions quotidiennes entre les partenaires pour aider les couples aux prises avec des problèmes de désir sexuel. / Despite the central role they play in sexuality, sexual desire and sexual behaviour remain poorly understood in committed couples. The paucity of empirical results in this area contributes to the distance between research and clinical practice, and negatively impacts the quality of care offered to the many couples seeking help for sexual desire issues – the most common complaint in sex therapy. The objective of the three articles in this doctoral research was to help address this gap by studying sexual desire within a relational perspective, working from the assumption that each partner’s wellbeing was influenced by that of the other partner, and that this influence was mediated in part by the couples’ sexual behaviour. Results from this research suggest that positive interactions during sex, such as self- and other-approach motives and genital and affective behaviours, are associated with greater sexual satisfaction and intimacy (study 1). In contrast, sexual difficulties such as low sexual desire are associated with restrictions in sexual behaviour and sexual dissatisfaction (study 2), and asynchronies between partners such as sexual desire discrepancy are associated with sexual distress (study 3). Furthermore, the third study begins to establish a direction and span to these associations, by suggesting that issues with sexual desire discrepancy are predictive of sexual distress from one day to the next, and that these daily associations are mirrored by more distal associations spanning a year or more. These results are consistent with recent research on emotional regulation in sexuality, and more specifically, with proposals that sexual desire plays a regulatory role in the couple, mediated by variations in sexual behaviour. It is hoped that, beyond these conceptual contributions, this research will be of use to clinicians. In particular, these results support the use of therapies that focus on everyday interactions between partners to help couples struggling with sexual desire issues.

Using latent growth curve modeling, this longitudinal study examined the patterns of the discrepancy between desired and actual frequency of sexual intercourse for 331 married couples over a period of 5 years. In addition, couple insecure attachment and control variables such as age, length of relationship, income, race, and education were used to predict each partner's sexual desire discrepancy (SDD) and its change over the 5 year time period. Participants were asked to report their actual frequency of sexual intercourse and their desired frequency in each wave of data collection. Discrepancy scores were created for each year by subtracting the reported actual frequency from the reported desired frequency separately for wives and for husbands. In terms of change over time, findings showed a significant change across time for wives with a trend toward less discrepancy over time. Husbands' discrepancy scores were higher than wives and remained stable over the five years. Insecure attachment predicted the average SDD for husbands. Wife income predicted the change in SDD over the five years for husbands but not for wives. Wife race predicted the average SDD for husbands. Implications for research and clinical use are highlighted.