Archives of Sexual Behavior最新文献

Understanding trends in age of first sex and first marriage is vital for interventions addressing sexually transmitted infections (STIs/HIV) and youth sexual behavior. Shifts in these milestones affect fertility, contraceptive use, and STI/HIV dynamics. Traditional descriptive statistics often overlook younger populations, leading to inaccurate trend assessments. This study analyzed trends in median age at first sex and first marriage using survival analysis. Data from eight surveys within Magu Health and Demographic Surveillance System (1994–2016) were analyzed, focusing on individuals aged 15–24 years. The accelerated failure time (AFT) model with log-logistic distribution estimated these medians. Results showed an increase in median age at first sex by one year for both sexes and in first marriage by one year for females and two years for males. The AFT model captured gradual increases from 2003–2004 to 2015–2016 for females and 2003–2004 to 2010 for males, while standard descriptive statistics showed no changes in specific periods: age at first sex, 1996–1997 to 2012–2013 (females) and 2003–2004 to 2012–2013 (males); first marriage, 1994–1995 to 2015–2016 (females) and 2003–2004 to 2010 (males). Individuals with no education had lower median age at first sex (males: 17.1 vs. 18.3 years; females: 16.2 vs. 18.2) and first marriage (females: 18.0 vs. 21.3) than those with secondary or higher education. HIV-positive individuals experienced slightly earlier age at first sex and first marriage than negative individuals. Education plays a pivotal role in delaying these events. The AFT model enriches trend assessment.

Public perceptions toward non-consensual dissemination of intimate images (NCII) have mostly been studied in the context of victimization in heterosexual relations and among heterosexual samples. In light of recent evidence indicating a high prevalence of NCII among sexual minorities, the purpose of the current study was to examine the role of sex and sexual orientation in NCII perceptions. A total of 128 heterosexual men, 132 heterosexual women, 115 gay men, and 131 lesbian women participated in the study. The participants read a description of NCII, followed by questions on offense severity and offender and victim blame. Four offense scenarios were created: male offender–female victim, female offender–male victim, male offender–male victim, female offender–female victim. Each participant received one scenario in a between-within-subjects design of participant sex x participant sexual orientation x offender’s sex x victim’s sex (2 × 2x2 × 2) design. The results suggested that, compared to all other groups, gay men perceived the severity of NCII as the lowest, while lesbian women were the least victim-blaming. Male participants attributed less offender blame than female participants, and males were attributed more blame than females. The findings are interpreted as related to unique experiences associated with gender and sexual orientation, as well as to gendered and sexual orientation-related norms and stereotypes that influence perceptions of harm and culpability.

While various kinds of relationships other than romantic ones exist between men and women in modern society, some individuals tend to simply interpret ambiguous female-male interactions as romantic in nature, which is referred to as romantic interpretation bias (RIB). In this research, we examined the effect of self-objectification on RIB among heterosexual women. Our findings from four studies (N = 861), including both cross-sectional surveys (Study 1) and fully controlled experiments (Studies 2, 3A and 3B), consistently showed that women with a higher level of self-objectification exhibited a higher level of RIB when interpreting ambiguous cross-sex interactions. Additionally, this effect could be explained by an increased sense of relationship contingency (Studies 2 and 3B). Importantly, the association between self-objectification and RIB was not only demonstrated in interpreting women’s own ambiguous interactions with men (Studies 1 and 2) but also in interpreting other women’s cross-sex interactions (Studies 3A and 3B). The implications of these findings are discussed.

Men’s use of internet pornography has been widely studied; however, the frequency with which men use different genres of pornography, and the individual differences associated with the use of different genres of pornography, has received less attention. The aim of the present research was to determine whether men’s sociosexual orientation and personality traits were associated with use of different genres of internet pornography. Across three studies, men were asked to self-report the frequency with which they have used each genre of pornography (Study 1; n = 126), presented with video thumbnails representing the various genres of pornography and asked to self-report their interest in using each genre (Study 2; n = 166), and given brief descriptions for each genre and asked to report their interest in using each genre (Study 3; n = 169). These associations were examined using men’s self-reported sociosexual orientation, personality traits, and use of four broad genres of pornography. Results indicated that aspects of men’s sociosexual orientation and personality were correlated with men’s use of various genres of pornography. Regression analyses revealed that aspects of men’s sociosexual orientation and personality were uniquely predictive of their use of group sex pornography (which depicts cues to high levels of sperm competition), as well as female-specific and paraphilic pornography. Discussion considers the potential evolutionary psychological implications of these findings, as well as limitations and directions for future studies of pornography use.

The emergence or worsening of sexual dysfunction is a frequent consequence of cancer treatment. Our aim was to determine the effectiveness of a psychosexual group intervention in improving sexual interest disorder in female cancer survivors. We carried out an experimental study conducted with a waiting list control group. The sample comprised 63 women (M = 51.49 years, SD = 5; range: 35–63). All the participants had been diagnosed with cancer, had had a partner for at least six months prior to starting the intervention, had completed inpatient cancer treatment, and had difficulties with sexual desire that were related to their cancer process. We assessed the presence of sexual interest disorder (DSM-5), levels of dyadic and solitary sexual desire, the effect of the treatment on their relationship, and the credibility of, and satisfaction with, the treatment. The efficacy in improving sexual interest disorder of the psychosexual group intervention administered to a group of female cancer survivors was confirmed. The pre-treatment prevalence of sexual interest disorder was 100% in both groups. The post-treatment prevalence of sexual interest disorder was 96.8% in the control group and 62.5% in the experimental group (p < .001). At 6-month follow-up, the treatment maintained its effectiveness. At the intrasubject level, the data showed statistically significant differences for the number of symptoms from DSM-5 (time: F = 48.31, p < .001) and solitary sexual desire (time: F = 7.78, p < .001). The results may be of significance for the sexual health of women diagnosed with cancer.

This research explored how laywomen perceive and prioritize the functions of physical attractiveness, with particular attention to how sociocultural beliefs and structural inequality, such as gender earnings disparities, shape these views. Study 1 employed a qualitative approach to examine women’s beliefs from both third-person (Study 1a) and first-person (Study 1b) perspectives. Most participants viewed attractiveness as a valuable asset across domains such as mate selection, employment, and social relationships, while a minority expressed more limited or skeptical views, often describing themselves as having average attractiveness. Study 2 used an experimental design to test how women prioritize the mating versus job-hunting functions of attractiveness when exposed to high or low gender earnings inequality. Results showed that while attractiveness was generally seen as beneficial, prioritization patterns depended on traditional gender ideology. Women with weaker traditional beliefs were more likely to emphasize the labor market utility of attractiveness, especially under high gender inequality. In contrast, women with stronger traditional beliefs showed no clear preference. These findings suggest that women’s instrumental use of appearance is shaped by sociocultural beliefs and structural inequality.

The objective of the study was to test a structural equation model in which sexual communication, life goals, basic psychological needs, and self-determined motivation were incorporated in order to explain their effect on sexual behavior to prevent adolescent pregnancy. This research was conducted with a sample of 620 Mexican adolescents of both sexes. The results of the model showed satisfactory goodness-of-fit indexes and it was determined that sexual communication with their mother predicted their intrinsic life goals. Sexual communication with friends predicted life goals and the satisfaction of basic psychological needs, and self-determined motivation decreased. Sexual communication with the partner increased basic psychological needs satisfaction. The greater basic psychological needs satisfaction, the greater self-determined motivation. Self-determined motivation can increase sexual behaviors to prevent pregnancy.

Sexual rape fantasies are commonly reported among women. Rape fantasies can range anywhere from violent, forceful encounters to seduction fantasies where the fantasizer is coerced by an attractive partner. Although rape fantasies often contain aversive content, research tends to broadly conceptualize sexual fantasy as a universally pleasurable experience. The current research explored the possible function of aversive rape fantasy in women, hypothesizing that such fantasies are part of the output of a threat management system for rape avoidance. The fantasy is argued to function as a form of mental rehearsal wherein more realistic and forceful rape fantasies provide the fantasizer a low-cost, high-reward method for simulating and preparing for a potential future attack. Results of an online survey study indicated that women’s fear of rape was positively associated with the presence of aversiveness in rape fantasies, but not other types of fantasies, when controlling for the eroticism of women’s rape fantasies and other types of fearfulness. Women’s history of sexual assault was also positively associated with the aversiveness of their rape fantasies—a relationship that was mediated by women’s fear of rape. These findings are consistent with the threat management system model and may imply that women who are more vulnerable to victimization are more fearful of rape and therefore engage in mental rehearsal of possible rape encounters through aversive rape fantasies as a means of defensive vigilance against potential future assaults.