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Past research suggests that sexual satisfaction may be partially dependent on sexual motives (the reasons people have sex). The primary goal of this study was to determine which of a wide range of empirically derived sexual motives were related to sexual satisfaction, and whether gender differences existed in these relationships. Examining data from 544 undergraduate participants (93 men, 451 women), we found that certain types of motives predicted levels of sexual satisfaction for both genders. However, a greater number of motive categories were related to satisfaction for women than for men, and sexual motives were a more consistent predictor of satisfaction in general for women than for men. We also found that empirical categories of motives predicted more variance in satisfaction ratings than did previously used theoretical categories. These findings suggest that a wide range of sexual motives are related to sexual satisfaction, that these connections may be moderated by gender, and that empirically-constructed categories of motives may be the most effective tool for studying this link.

Recent research on the impact of religiosity on sexuality has highlighted the role of the individual, and suggests that the effects of religious group and sexual attitudes and fantasy may be mediated through individual differences in spirituality. The present study investigated the role of religion in an ethnically diverse young adult sample (N = 1413, 69% women) using religious group as well as several religiosity domains: spirituality, intrinsic religiosity, paranormal beliefs, and fundamentalism. Differences between religious groups in conservative sexual attitudes were statistically significant but small; as predicted, spirituality mediated these effects. In contrast to the weak effects of religious group, spirituality, intrinsic religiosity, and fundamentalism were strong predictors of women's conservative sexual attitudes; for men, intrinsic religiosity predicted sexual attitude conservatism but spirituality predicted attitudinal liberalism. For women, both religious group and religiosity domains were significant predictors of frequency of sexual fantasies while, for men, only religiosity domains were significant predictors. These results indicate that individual differences in religiosity domains were better predictors of sexual attitudes and fantasy than religious group and that these associations are moderated by gender.

Selective serotonin reuptake inhibitors (SSRIs) are associated with significant sexual side effects. By definition, all SSRIs increase overall serotonin (5HT) by binding to serotonin autoreceptors (5HT(IA)); however, each SSRI has a unique portfolio of secondary binding properties to other neurotransmitters such as norepinephrine (NE). As 5HT(IA) receptors mediate NE neurotransmission, SSRIs that are highly selective for 5HT(IA) are more likely to reduce NE efficiency; however, in SSRIs that are less selective for 5HT(IA), this could be counteracted by secondary binding to NE. Norepinephrine is the major neurotransmitter of the sympathetic nervous system (SNS), which has been shown to mediate genital arousal in women; thus, it is possible that increasing SNS activity in women taking SSRIs that are highly selective for 5HT(IA) may counteract sexual side effects in those women. To test this hypothesis, we conducted a reanalysis of Meston (2004)'s 8-week, double-blind, cross-over, placebo-controlled study of the effects of ephedrine (50 mg taken 1 h prior to sexual activity) on self-reported sexual functioning of women taking paroxetine (N = 5), sertraline (N = 7), or fluoxetine (N = 7). As predicted, women taking SSRIs, which are highly selective for 5HT(IA) (sertraline, paroxetine), showed improvement in sexual arousal and orgasm. By contrast, women taking SSRIs, which are less selective for 5HT(IA) relative to NE (fluoxetine), showed no change or decrease in sexual functioning. These findings have implications for treating certain SSRI-induced sexual side effects.

Much research has been conducted on ethnic differences in sexuality, but few studies have systematically assessed the importance of acculturation in sexual behavior. The present study assessed general differences in normative sexual practices in healthy Euro-American, Asian, and Hispanic populations, using measures of acculturation to analyze the relative effects of heritage and mainstream cultures within each group. A total of 1,419 undergraduates (67% Euro-American, 17% Hispanic, 16% Asian; 33% men, 67% women) completed questionnaires which assessed sexual experience and causal sexual behaviors. In concordance with previous studies, Asians reported more conservative levels of sexual experience and frequency of sexual behaviors, fewer lifetime partners, and later ages of sexual debut than Euro-American or Hispanic counterparts. Hispanic reported sexual experiences similar to that of Euro-Americans. There was a significant interaction between mainstream and heritage acculturation in predicting number of lifetime sexual partners in Asian women such that the relationship between heritage acculturation and casual sexual behavior was stronger at lower levels of mainstream acculturation. On the other hand, in Hispanic men, higher levels of mainstream acculturation predicted more casual sexual behavior (one-time sexual encounters and number of lifetime sexual partners) when heritage acculturation was low but less casual sexual behavior when heritage acculturation was high. These results suggest that, for sexual behavior, Hispanic men follow an “ethnogenesis” model of acculturation while Asian women follow an “assimilation” model of acculturation.

Although it has been hypothesized that culture and religion play an important role in sexuality, the relative roles of acculturation and religiosity on ethnic differences in sexual attitudes have not been often empirically explored. The present study assessed differences in sexual attitudes in Euro-American, Asian, and Hispanic American populations using measures of acculturation to analyze the relative effects of heritage and mainstream cultures, as well as religiosity, within each ethnic group. A total of 1,415 college students (67% Euro-American, 16% Hispanic, 17% Asian; 32% men, 68% women) completed questionnaires which assessed attitudes towards homosexuality, gender role traditionality, casual sex, and extramarital sex. In concordance with previous studies, Asians reported more conservative sexual attitudes than did their Hispanic and Euro-American peers. Hispanics reported sexual attitudes similar to that of Euro-Americans. For both Hispanic and Asians, higher acculturation predicted sexual attitudes similar to that of Euro-Americans. For Asian, Hispanic, and Euro-American women, there was a significant interaction between intrinsic religiosity and spirituality such that the relationship between conservativism of sexual attitudes and intrinsic religiosity was stronger at higher levels of spirituality. In Euro-Americans and Asians, intrinsic religiosity and religious fundamentalism strongly predicted conservative sexual attitudes; while still significant, these relationships were not as pronounced in the Hispanic sample, implying an ethnic-by-religious effect. Novel to this study, acculturation did not mediate the relationship between religiosity and sexual attitudes, indicating that ethnic differences in religiosity effects were distinct from acculturation.