Correlates of Men’s Sexual Interest: A Cross-Cultural Study Ana Carvalheira, PhD,* Bente Træen, † and Aleksandar Štulhofer, PhD ‡ *Department of Clinical Psychology, ISPA—Instituto Universitário, Lisbon, Portugal; † Department of Psychology, University of Tromsø, Tromsø, Norway; ‡ Sexology Unit, Department of Sociology, Faculty of Humanities and Social Sciences, University of Zagreb, Zagreb, Croatia DOI: 10.1111/jsm.12345 ABSTRACT Introduction. Low sexual desire has been studied more extensively in women than in men. Aim. The study aims to analyze the correlates of distressing lack of sexual interest and the self-assessed reasons for the lack of sexual interest among heterosexual men from three countries. Methods. A web-based survey was completed by 5,255 men aged 18–75 years from Portugal, Croatia, and Norway. Main Outcome Measures. We used an item that assesses lack of sexual interest from the British NATSAL 2000. Anxiety and depression were measured with the SCL-ANX4 and SCL-DEP6. Relationship intimacy was measured using a five-item version of the Emotional Intimacy Scale. A shortened version of the Sexual Boredom Scale was used to assess proneness to sexual boredom in relation to the duration of relationship, and personal distress was evaluated using an item created for this study. Results. Distressing lack of sexual interest lasting at least 2 months in the previous year was reported by 14.4% of the participants. The most prevalent comorbidity among these men was erectile difficulty (48.7%). Men with low confidence levels in erectile function, not feeling attracted to the partner, and those in long-term relationships were more likely to have experienced lack of sexual interest than were men with high confidence levels and those who felt attracted to their partner and those in shorter-term relationships. Professional stress was the most frequently reported reason for lack of sexual interest. Sexual boredom as a result of a long-term relationship was significantly and negatively correlated with the level of intimacy (r =-0.351, P < 0.001) and sexual satisfaction (r =-0.497, P < 0.001). Conclusions. Distressing lack of sexual interest in heterosexual men was associated with a number of intrapersonal (self-confidence in erectile function, stress), interpersonal (relationship duration, partner attractiveness), and socio- cultural variables. Carvalheira A, Træen B, and Štulhofer A. Correlates of men’s sexual interest: A cross- cultural study. J Sex Med **;**:**–**. Key Words. Sexual Desire; Sexual Interest; Men; Relationship Duration Introduction S exual desire and its determinants have not been examined as extensively in men as in women [1]. After a long period in which research focused on performance problems, research on male sexual response has been directed toward sexual arousal (for a review, see Janssen [2]). Presuming gender differences in sexual desire, theorists have recently suggested that greater diversity exists within gender than between gender [3–5]. Scientific literature on conceptual, clinical, and empirical work concerning male hypoactive sexual desire disorder is scarce [6]. The National Health and Social Life Survey (NHSLS) [7] reported results of 1,249 in-person interviews with American men aged 18–59 years who had at least one sexual partner in the past year. Dichotomous items were used to measure the presence of sexual problems during the previous 12 months. The prevalence of “lacking desire for sex” ranged from 14% (for those 18–29 years old) to 17% (for those 50–59 years old). Distress was not measured on this study. The National Survey of Sexual Attitudes and Lifestyles (NATSAL) [8] consisted of computer- assisted self-interviews with 11,161 British men and women aged 16–44 years. Lack of interest in 1 © 2013 International Society for Sexual Medicine J Sex Med **;**:**–**