Longitudinal associations between relational and sexual well-being in couples transitioning to parenthood.

There is limited understanding of the dynamic between relational and sexual well-being as couples adjust to new parenthood, despite this being a vulnerable period for couples' relationships. This study was aimed at examining the bidirectional links between relationship quality and sexual well-being (i.e., sexual satisfaction, sexual distress) across the transition to parenthood. We assessed new parent couples (N = 257) across four time points (two prenatal) from mid-pregnancy through 6 months postpartum. Parallel dyadic latent growth curve modeling was employed to examine the associations between trajectories of perceived relationship quality, sexual satisfaction, and sexual distress. New parents' declines in relationship quality were associated with declines in own and partners' sexual satisfaction and with increases in own sexual distress. Mothers' prenatal relationship quality and sexual distress predicted subsequent changes in own sexual distress and fathers' relationship quality, respectively. Results indicate that changes to new parents' relational and sexual well-being mutually influence each other over time. Current results indicate that the impact of the transition on couples' relationships is partly determined by own and partners' prenatal factors, to which clinicians and researchers can attend to early on. Cross-domain links between relational and sexual well-being should be considered in research and clinical practice.

Biopsychosocial Predictors of Couples' Trajectories of Sexual Function and Sexual Distress Across the Transition to Parenthood.

The prevailing narrative about sexual declines during the transition to parenthood is largely based on studies assessing the average couple, but there is increasing evidence of variability in the sexual well-being of new parents. We sought to establish distinct subgroups of couples based on sexual function and sexual distress trajectories and examine biopsychosocial risk and protective factors of these trajectories. A prospective cohort of 257 first-time parent couples reported on sexual function and sexual distress from 20-week pregnancy (baseline) to 6 months postpartum across four time-points. Biopsychosocial factors were assessed at baseline and 3 months postpartum. Dyadic latent class growth analysis identified two distinct sexual function classes (high, 85%; discrepant, 15%) and three sexual distress classes (low, 77%; moderate, 12%; discrepant, 11%). We identified biomedical (vaginal delivery, perineal tear, breastfeeding) and psychosocial (fatigue, stress, anxiety, depression, attitudes toward sex during pregnancy, relationship quality, perceived partner support) factors that can be assessed at critical time-points (i.e., 20-week pregnancy and 3 months postpartum) to identify high-risk couples. Current results indicate that the course of change in sexual well-being for new parents is heterogeneous, with most new parents retaining high function and low distress and only a minority showing trajectories in which mothers, but not fathers, experience clinically significant and persistent levels of low sexual function and high sexual distress. These results may facilitate more nuanced approaches to the assessment and intervention of new parents' sexual well-being.

Sexual violence history predicts changes in vaginal immune parameters during sexual arousal.

OBJECTIVE: To examine the influence of sexual arousal on vaginal mucosal inflammatory cytokine and antibody production in healthy women with and without histories of childhood and/or adult sexual violence. METHODS: Ninety-one premenopausal healthy women (ages 18-42) attended a single laboratory session in which they provided vaginal fluid samples before and after viewing one neutral and one erotic film. While viewing the films, participants' vaginal sexual arousal was recorded using vaginal photoplethysmography. RESULTS: Of the 91 participants, 41 (45%) reported no history of sexual violence, 17 (19%) reported a history of childhood sexual abuse (CSA) only, 19 (21%) reported a history of adult sexual assault (ASA) only, and 10 (11%) reported a history of both CSA and ASA, with 4 participants choosing not to provide information on their sexual violence history. For women with a history of ASA but not CSA, there was a significant increase in vaginal IL-1ß following arousal, while for women with a history of CSA (with or without ASA), there was a significant decrease. Women without CSA histories had a significant increase in vaginal IgA following sexual arousal, while women with CSA histories had a decrease. CONCLUSION: Sexual arousal possibly plays a role in modifying vaginal immune responses in young, healthy women. Moreover, these effects may vary depending upon sexual assault histories, such that relative to women without assault histories, women with a history of early life sexual trauma showed significantly altered vaginal immune responses following sexual arousal. If replicated, these findings may help explain the increased risk for sexually transmitted infections observed among women with sexual assault histories.

Validation of the Maternal and Partner Sex During Pregnancy Scales (MSP/PSP) in Portugal: Assessing Dyadic Interdependence and Associations with Sexual Behaviors.

BACKGROUND: The Maternal and Partner Sex During Pregnancy Scales (MSP/PSP) are self-report measures of expectant couples' attitudes towards sex during pregnancy. AIM: This study aimed to examine dyadic non-independence of MSP/PSP scores in a sample of expectant couples, while providing an evaluation of factor structure, validity, and reliability of the Portuguese versions of the MSP/PSP. The association between partners' attitudes and frequency of sexual behaviors was also examined. METHODS: A total of 189 expectant couples completed a survey that included a sociodemographic questionnaire, the MSP/PSP, frequency of sexual behaviors, as well as validated measures of attitudes to sex, sexual function, sexual satisfaction, depression, and perceived social support. OUTCOMES: Dyadic interdependence was tested via Pearson correlation between MSP/PSP scores; between-dyads variability was tested via intraclass correlation of the unconditional model including only MSP/PSP scores using a multi-level model. Associations between attitudes and sexual behavior were tested using regression analysis (between-dyads outcomes) or APIM (mixed outcomes). Factor structure, internal consistency, and validity (convergent, discriminant, and concurrent) of the Portuguese versions of the scales were assessed. RESULTS: MSP/PSP scores were interdependent within-dyads. Male partners presented significantly more positive attitudes towards sex during pregnancy than pregnant women. Attitudes were linked to indices of sexual well-being for both partners (sexual functioning, sexual satisfaction) and, for both partners, more positive attitudes were associated with higher frequencies of most partnered sexual behaviors. The Portuguese MSP/PSP scales showed good factor structure, and good to excellent indices of reliability and validity. CLINICAL IMPLICATIONS: The Portuguese MSP/PSP is adequate for use in couples. The scales can be used to screen partners with negative attitudes towards sex during pregnancy and evaluate how these attitudes relate to intra- and inter-individual sexual well-being during pregnancy. STRENGTHS & LIMITATIONS: A strength of this study is the inclusion of both expectant partners and the use of dyadic analysis. Couples who participated in the study were all in mixed-gender/sex relationships, although this was not defined as an inclusion criterion. Future studies should use the MSP/PSP in more diverse samples in order to further determine how the scale performs for couples with different characteristics. CONCLUSION: Scores in the MSP/PSP are interdependent between mixed-sex/gender expectant couple members. More positive attitudes towards sex during pregnancy are linked to higher frequencies of partnered sexual behaviors and to both partners' greater sexual well-being. Tavares Inês M., Heiman Julia R., Rosen Natalie O., et al. Validation of the Maternal and Partner Sex During Pregnancy Scales (MSP/PSP) in Portugal: Assessing Dyadic Interdependence and Associations with Sexual Behaviors. J Sex Med Rev 2021;18:789-799.

The Successful Measurement of Clitoral Pulse Amplitude Using a New Clitoral Photoplethysmograph: A Pilot Study.

BACKGROUND: Although the clitoris is more sensitive to stimulation and its innervation more conducive to sensory feedback than the vagina, the field of sexual psychophysiology, which uses psychophysiological methods including genital response measures to study sexual arousal, relies heavily on the measurement of vaginal, rather than clitoral, pulse amplitude. AIM: To develop and test a new clitoral photoplethysmograph for the measurement of clitoral pulse amplitude (CPA). METHODS: 2 versions of the new device, which differed in the orientation of the sensor and light source (parallel vs angled), were tested in 15 premenopausal, sexually functional women. Vaginal pulse amplitude (VPA) was assessed simultaneously. The women viewed a 3-minute erotic and an anxiety-inducing film segment with each clitoral sensor, interspersed with neutral video excerpts. In addition, they were asked to indicate their subjective level of sexual arousal during and after erotic video presentations. OUTCOMES: The main outcome measures are CPA, VPA, and subjective sexual arousal. RESULTS: The clitoral photoplethysmograph successfully detected CPA. The quality of the signals was best for the angled sensor. Main effects of the film and the interaction between the film and epoch were stronger for the clitoral than for the vaginal device. In addition, CPA followed more closely changes in intensity of sexual films than VPA. Within- and between-subject correlations between genital response and subjective sexual arousal were higher for the clitoral than for the vaginal device. CLINICAL TRANSLATION: Comparison of CPA with other genital blood flow measures in clinical samples is indicated and may contribute to improved physiological assessments of sexual response in women. STRENGTHS AND LIMITATIONS: Our sample was small and consisted of healthy volunteers. Future research could examine test-retest reliability, by including multiple recording sessions, and further explore the specificity of CPA by comparing sexual and non-sexual stimuli with positive valence. CONCLUSION: This study presents the first instrument to successfully measure CPA. Mechelmans DJ, Sachtler WL, von Wiegand TE, et al. The Successful Measurement of Clitoral Pulse Amplitude Using a New Clitoral Photoplethysmograph: A Pilot Study. J Sex Med 2020;17:1118-1125.

Toward a More Evidence-Based Nosology and Nomenclature for Female Sexual Dysfunctions-Part III.

INTRODUCTION: In 2016 the International Society for the Study of Women's Sexual Health (ISSWSH) published an expert consensus report on new nomenclature that addressed the need for comprehensive, evidence-based criteria for new diagnoses in desire, arousal, and orgasm, with the definition on arousal focusing exclusively on female genital arousal disorder (FGAD). AIM: A new expert panel solely focused on mechanisms of arousal disorders convened to revise the nomenclature to include female cognitive arousal disorder (FCAD) and FGAD. METHODS: The ISSWSH co-chairs identified experts on arousal disorders in women. The 10 participants included clinicians, researchers, and educators, representing a diverse, multidisciplinary group. Pre-meeting preparation included evidence-based literature review as the basis of presentations panelists made at the meeting on the current knowledge in cognitive arousal. Consensus was reached using a modified Delphi method. Writing assignments were made as a basis of manuscript development. MAIN OUTCOME MEASURES: The new definition of FCAD is characterized by distressing difficulty or inability to attain or maintain adequate mental excitement associated with sexual activity, as manifested by problems with feeling engaged and mentally turned on or sexually aroused for a minimum of 6 months. RESULTS: Female sexual arousal disorder encompasses both FGAD (revised definition) and FCAD (new definition). Recommendations regarding diagnosis include a clinical interview to assess for FCAD using targeted questions. Patient-reported outcomes that contain questions to assess FCAD are described, including limitations for differentiating between cognitive arousal, genital arousal, and sexual desire. Laboratory measures of cognitive and genital arousal are discussed, including the relationships between genital and cognitive arousal patterns. Biopsychosocial risk factors for FCAD and FGAD, as well as exclusionary conditions, are presented. CLINICAL IMPLICATIONS: The revision of the ISSWSH nomenclature regarding the criteria for the 2 arousal categories, FCAD and FGAD, and the recommended diagnostic strategies offers a framework for management of women with arousal disorders. STRENGTHS & LIMITATIONS: This nomenclature allows for basic science and clinical research in subtypes of arousal in order to develop better diagnostic and treatment options for use by clinicians, scientists, and regulatory agencies. There are limited validated measures of cognitive arousal, including the Female Sexual Function Index, the most commonly used measure, which does not effectively distinguish between cognitive excitement, genital sensations, and event-related desire. CONCLUSION: Future directions include the refinement of FCAD and FGAD and development and validation of patient-reported outcomes that distinguish between the cognitive processes and genital responses to enhance clinical care and research in this area. Parish SJ, Meston CM, Althof SE, et al. Toward a More Evidence-Based Nosology and Nomenclature for Female Sexual Dysfunctions-Part III. J Sex Med 2019;16:452-462.

Child Sexual Abuse and Negative Affect as Shared Risk Factors for Sexual Aggression and Sexual HIV Risk Behavior in Heterosexual Men.

Previous research has suggested that sexually aggressive behavior and sexual HIV risk behavior are associated. Childhood sexual abuse (CSA) is a well-established risk factor for both types of problematic sexual behavior. Negative affect (i.e., anxiety, depression, and anger) is a less well-studied risk factor, but it has been theorized to relate to both sexual aggression and HIV risk behavior. Thus, this study sought to (1) confirm the relationship between sexual aggression and HIV risk behavior, (2) establish CSA and negative affect as shared risk factors for sexual aggression and HIV risk behavior, and (3) evaluate whether negative affect mediates the relationship between CSA and sexual aggression and between CSA and HIV sexual risk in a sample of heterosexual men. We recruited 18- to 30-year-old heterosexual men (N = 377) from urban sexually transmitted infection clinics. Men completed measures of sexual HIV risk history (number of partners and condom use), sexual aggression history, CSA history, and trait negative affect (anger, anxiety, and depression). Structural equation modeling was used to examine hypothesized direct and indirect relationships. In the final SEM model, sexual aggression history and sexual HIV risk behavior were correlated. CSA was associated with both types of problematic sexual behavior. Anxiety significantly mediated the relationship between CSA and sexual aggression and between CSA and sexual HIV risk behavior (χ 2[1300] = 2121.79, p < .001; CFI = 0.905; RMSEA [90% CI] = .044 [.041-.047]). Sexual aggression appears to be part of a constellation of sexual risk behaviors; thus, it may be possible to develop prevention programs that target both sexual HIV risk and sexual aggression. CSA is a shared risk factor for sexual aggression and HIV risk behavior through the pathway of anxiety. Thus, anxiety might be one promising target for intervention.

Testosterone and immune-reproductive tradeoffs in healthy women.

Although testosterone (T) has been characterized as universally immunosuppressive across species and sexes, recent ecoimmunology research suggests that T's immunomodulatory effects (enhancing/suppressing) depend on the organism's reproductive context. Very little is known about the immune effects of T in healthy females, and even less about how reproductive effort modulates the immune effects of T in humans. We investigated how the interaction between endogenous T and sexual activity predicted menstrual cycle-related changes in several measures of immunity: inflammation (indexed by interleukin-6, IL-6), adaptive immunity (indexed by immunoglobulin A, IgA), and functional immunity (indexed by bactericidal assay). Thirty-two healthy women (sexually abstinent, N=17; sexually active with one male partner, N=15) provided saliva samples at four points in the menstrual cycle: menses, follicular, ovulation, and luteal phases. Among sexually abstinent women, T was positively associated with IL-6 across the cycle; for sexually active women, however, T was positively associated with IL-6 in the luteal phase only, and negatively associated with IL-6 at ovulation. High T predicted higher IgA among women who reported infrequent intercourse, but lower IgA among women who reported very frequent intercourse. Finally, across groups, T was positively associated with greater bacterial killing at menses, but negatively associated in the luteal phase. Overall, rather than being universally immunosuppressive, T appeared to signal immunomodulation relevant to reproduction (e.g., lowering inflammation at ovulation, potentially preventing immune interference with conception). Our findings support the hypothesis that the immunomodulatory effects of endogenous T in healthy females depend on sexual and reproductive context.

Women's Sex-Related Dissociation: The Effects of Alcohol Intoxication, Attentional Control Instructions, and History of Childhood Sexual Abuse.

This study examined influences of alcohol intoxication, attentional control, and childhood sexual abuse (CSA) severity on sex-related dissociation. Sex-related dissociation is defined here as dissociation (e.g., feeling as if the world is unreal and feeling disconnected from one's body) during sexual activity or in the presence of sexual stimuli. Women (N = 70) were randomized to a 2 (alcohol condition: none,.10% peak breath alcohol concentration) X 2 (attentional control instructions: none, "relax and maximize" sexual arousal) experiment and exposed to sexual stimuli. Alcohol intoxication was positively associated with sex-related dissociation. CSA severity and sex-related dissociation were positively associated in the no-instruction condition but not in the "relax and maximize" condition. For some women, efforts to relax and maximize sexual arousal may buffer the association between CSA and sex-related dissociation.

The Impact of Gain- and Loss-Framed Messages on Young Adults' Sexual Decision Making: An Experimental Study.

Messages that frame a target behavior in terms of its benefits (gain frame) or costs (loss frame) have been widely and successfully used for health promotion and risk reduction. However, the impact of framed messages on decisions to have sex and sexual risk, as well as moderators of these effects, has remained largely unexplored. We used a computerized laboratory task to test the effects of framed messages about condom use on young adults' sexual decision making. Participants (N = 127) listened to both gain- and loss-framed messages and rated their intentions to have sex with partners who posed a high and low risk for sexually transmitted infections (STIs). The effects of message frame, partner risk, participant gender, ability to adopt the messages, and message presentation order on intentions to have sex were examined. Intentions to have sex with high-risk partners significantly decreased after the loss-framed message, but not after the gain-framed message, and intentions to have sex increased for participants who received the gain-framed message first. Yet, participants found it easier to adopt the gain-framed message. Results suggest that loss-framed messages may be particularly effective in reducing intentions to have sex with partners who might pose a higher risk for STIs, and that message presentation order may alter the relative effectiveness of gain- and loss-framed messages on sexual decision making. Future studies should examine the precise conditions under which gain- and loss-framed messages can promote healthy sexual behaviors and reduce sexual risk behaviors.

Partner Pressure, Victimization History, and Alcohol: Women's Condom-Decision Abdication Mediated by Mood and Anticipated Negative Partner Reaction.

Highly intoxicated versus sober women were evaluated using multi-group path analyses to test the hypothesis that sexual victimization history would interact with partner pressure to forgo condom use, resulting in greater condom-decision abdication-letting the man decide whether or not to use a condom. After beverage administration, community women (n = 408) projected themselves into a scenario depicting a male partner exerting high or low pressure for unprotected sex. Mood, anticipated negative reactions from the partner, and condom-decision abdication were assessed. In both control and alcohol models, high pressure increased anticipated negative partner reaction, and positive mood was associated with increased abdication. In the alcohol model, victimization predicted abdication via anticipated negative partner reaction, and pressure decreased positive mood and abdication. In the control model, under high pressure, victimization history severity was positively associated with abdication. Findings implicate condom-decision abdication as an important construct in understanding how women's sexual victimization histories may exert sustained impact on sexual interactions.

Men's Intentions to Have Sex With a New Partner: Sexual and Emotional Responding, Alcohol, and Condoms.

Findings regarding the relation between alcohol and intentions to have sex have been mixed, and little research has examined the role of condom availability on intentions to have sex. Sexual and emotional responding may influence subsequent sexual decisions. Thus, a better understanding of sexual and emotional responding combined with situational factors such as condom presence could help explain the discrepancies in findings regarding alcohol's effect on intentions to have sex. The effects of alcohol and condom presence on men's intentions to have sex were examined using an experimental paradigm involving an alcohol administration study and a second-person eroticized scenario. The effects of sexual and emotional responding were also examined in relation to intentions to have sex. It was found that alcohol increased positive mood, which was associated with higher intentions to have sex. In addition, condom presence was directly associated with higher intentions to have sex. More sexual desire was related to increased likelihood of sexual intentions. These findings increase understanding of mechanisms underlying the relation between alcohol and intentions to have sex.

Perceived Partner Responsiveness Mediates the Association Between Sexual and Marital Satisfaction: A Daily Diary Study in Newlywed Couples.

Sexuality is an integral part of intimate relationships, yet surprisingly little is known about how and for whom sexuality matters. The present research investigated the interplay of sexual and non-sexual factors that contribute to relationship satisfaction. Specifically, we tested the hypothesis that the association between sexual satisfaction and marital satisfaction is mediated by a non-sexual factor-namely, perceived partner responsiveness (PPR). Additionally, we tested the role of gender as a possible moderator of this mediated association. Thirty-four newlywed couples completed diaries with each spouse reporting their sexual satisfaction, marital satisfaction, and PPR every day for 30 days. We tested our predictions at both the person level (i.e., the mean level across 30 days) and the daily level. At the person level, we found that sexual satisfaction and PPR separately predicted marital satisfaction. Moreover, the effect of sexual satisfaction on marital satisfaction was partially mediated by PPR. No gender differences emerged at this level. At the daily level, we found similar support for partial mediation. However, at this level, gender did serve as a moderator. The stronger mediation found for women was driven by a stronger association between sexual satisfaction and PPR for women than for men. This study joins a growing literature highlighting the role of PPR in dyadic relationships.

Men with Sexual Problems and Their Partners: Findings from the International Survey of Relationships.

Epidemiologic studies of sexual function problems in men have focused on the individual male and related sociodemographic characteristics, individual risk factors and lifestyle concomitants, or medical comorbidities. Insufficient attention has been given to the role of sexual and relationship satisfaction and, more particularly, to the perspective of the couple as causes or correlates of sexual problems in men or women. Previously, we reported results of the first large, multi-national study of sexual satisfaction and relationship happiness in 1,009 midlife and older couples in five countries (Brazil, Germany, Japan, Spain, U.S.). For the present study, we examined, within each problem, the association of four major sexual problems in men (loss of sexual desire, erectile problems, premature ejaculation, delayed/absent orgasm) and multiple problems, with male and female partners' assessments of physical intimacy, sexual satisfaction, and relationship happiness, as well as associations with well-known health and psychosocial correlates of sexual problems in men. Sexual problem rates of men in our survey were generally similar to rates observed in past surveys in the general population, and similar risk factors (age, relationship duration, overall health) were associated with lack of desire, anorgasmia, or erection difficulties in our sample. As in previous surveys, there were few correlates of premature ejaculation. As predicted, men with one or more sexual problems reported decreased relationship happiness as well as decreased sexual satisfaction compared to men without sexual problems. Moreover, female partners of men with sexual problems had reduced relationship happiness and sexual satisfaction, although these latter outcomes were less affected in the women than the men. The association of men's sexual problems with men's and women's satisfaction and relationship happiness were modest, as these couples in long-term, committed relationships were notable for their relatively high levels of physical affection and relationship happiness.

Female Sexual Function Index Short Version: A MsFLASH Item Response Analysis.

The Female Sexual Function Index (FSFI) is a psychometrically sound and popular 19-item self-report measure, but its length may preclude its use in studies with multiple outcome measures, especially when sexual function is not a primary endpoint. Only one attempt has been made to create a shorter scale, resulting in the Italian FSFI-6, later translated into Spanish and Korean without further psychometric analysis. Our study evaluated whether a subset of items on the 19-item English-language FSFI would perform as well as the full-length FSFI in peri- and postmenopausal women. We used baseline data from 898 peri- and postmenopausal women recruited from multiple communities, ages 42-62 years, and enrolled in randomized controlled trials for vasomotor symptom management. Goals were to (1) create a psychometrically sound, shorter version of the FSFI for use in peri- and postmenopausal women as a continuous measure and (2) compare it to the Italian FSFI-6. Results indicated that a 9-item scale provided more information than the FSFI-6 across a spectrum of sexual functioning, was able to capture sample variability, and showed sufficient range without floor or ceiling effects. All but one of the items from the Italian 6-item version were included in the 9-item version. Most omitted FSFI items focused on frequency of events or experiences. When assessment of sexual function is a secondary endpoint and subject burden related to questionnaire length is a priority, the 9-item FSFI may provide important information about sexual function in English-speaking peri- and postmenopausal women.

Oxytocin increases VTA activation to infant and sexual stimuli in nulliparous and postpartum women.

After giving birth, women typically experience decreased sexual desire and increased responsiveness to infant stimuli. These postpartum changes may be viewed as a trade-off in reproductive interests, which could be due to alterations in brain activity including areas associated with reward. The goal of this study was to describe the roles of oxytocin and parity on reward area activation in response to reproductive stimuli, specifically infant and sexual images. Because they have been shown to be associated with reward, the ventral tegmental area (VTA) and nucleus accumbens (NAc) were targeted as areas of expected alterations in activity. Oxytocin was chosen as a potential mediator of reproductive trade-offs because of its relationship to both mother-infant interactions, including breastfeeding and bonding, and sexual responses. We predicted that postpartum women would show higher reward area activation to infant stimuli and nulliparous women would show higher activation to sexual stimuli and that oxytocin would increase activation to infant stimuli in nulliparous women. To test this, we measured VTA and NAc activation using fMRI in response to infant photos, sexual photos, and neutral photos in 29 postpartum and 30 nulliparous women. Participants completed the Sexual Inhibition (SIS) and Sexual Excitation (SES) Scales and the Brief Index of Sexual Function for Women (BISF-W), which includes a sexual desire dimension, and received either oxytocin or placebo nasal spray before viewing crying and smiling infant and sexual images in an fMRI scanner. For both groups of women, intranasal oxytocin administration increased VTA activation to both crying infant and sexual images but not to smiling infant images. We found that postpartum women showed lower SES, higher SIS, and lower sexual desire compared to nulliparous women. Across parity groups, SES scores were correlated with VTA activation and subjective arousal ratings to sexual images. In postpartum women, sexual desire was positively correlated with VTA activation to sexual images and with SES. Our findings show that postpartum decreases in sexual desire may in part be mediated by VTA activation, and oxytocin increased activation of the VTA but not NAc in response to sexual and infant stimuli. Oxytocin may contribute to the altered reproductive priorities in postpartum women by increasing VTA activation to salient infant stimuli.

Individual and Partner Correlates of Sexual Satisfaction and Relationship Happiness in Midlife Couples: Dyadic Analysis of the International Survey of Relationships.

The current research reports a dyadic analysis of sexual satisfaction, relationship happiness, and correlates of these couple outcomes in a large multinational dataset consisting of 1,009 midlife heterosexual couples (2,018 individuals) recruited in Japan, Brazil, Germany, Spain, and the United States (Heiman et al., 2011). Actor-Partner Interdependence Models (Kenny, Kashy, & Cook, 2006) identified correlates of sexual satisfaction that included individuals' reports of good health; frequent kissing, cuddling, and caressing; frequent recent sexual activity; attaching importance to one's own and one's partner's orgasm; better sexual functioning; and greater relationship happiness. Even after controlling for individual-level effects, partners' reports of good health; frequent kissing, cuddling, and caressing; frequent recent sexual activity; attaching importance to one's own and one's partner's orgasm; better sexual functioning; and greater relationship happiness contributed significantly to predicting and understanding individuals' sexual satisfaction. Correlates of relationship happiness included individuals' reports of good health; frequent kissing, cuddling, and caressing; frequent recent sexual activity; attaching importance to one's own and one's partner's orgasm; better sexual functioning; and greater sexual satisfaction, and once again, even after controlling for individual-level effects, partners' reports of each of these correlates contributed significantly to predicting and understanding individuals' relationship happiness. Interactions of individual and partner effects with participant gender are also reported. Current results demonstrate empirically that the partner "matters" to an individual's sexual satisfaction and relationship happiness and indicate that a comprehensive understanding of factors contributing to these couple outcomes requires a couple-level research strategy. Partner effects, even when controlling for individual effects, were consistently observed, and explanation of sexual satisfaction and relationship happiness always depended on identifying and understanding mutual and concurrent individual and partner influences.

Sexual victimization, alcohol intoxication, sexual-emotional responding, and sexual risk in heavy episodic drinking women.

This study used an experimental paradigm to investigate the roles of sexual victimization history and alcohol intoxication in young women's sexual-emotional responding and sexual risk taking. A nonclinical community sample of 436 young women, with both an instance of heavy episodic drinking and some HIV/STI risk exposure in the past year, completed childhood sexual abuse (CSA) and adolescent/adult sexual assault (ASA) measures. A majority of them reported CSA and/or ASA, including rape and attempted rape. After random assignment to a high alcohol dose (.10 %) or control condition, participants read and projected themselves into an eroticized scenario of a sexual encounter involving a new partner. As the story protagonist, each participant rated her positive mood and her sexual arousal, sensation, and desire, and then indicated her likelihood of engaging in unprotected sex. Structural equation modeling analyses revealed that ASA and alcohol were directly associated with heightened risk taking, and alcohol's effects were partially mediated by positive mood and sexual desire. ASA was associated with attenuated sexual-emotional responding and resulted in diminished risk taking via this suppression. These are the first findings indicating that, compared to non-victimized counterparts, sexually victimized women respond differently in alcohol-involved sexual encounters in terms of sexual-emotional responding and risk-taking intentions. Implications include assessing victimization history and drinking among women seeking treatment for either concern, particularly women at risk for HIV, and alerting them to ways their histories and behavior may combine to exacerbate their sexual risks.

Physiological reactivity in a community sample of sexually aggressive young men: a test of competing hypotheses.

Men's sexually aggressive behavior potentially could relate to either physiological hyporeactivity or hyperreactivity, and these two different physiological profiles could be associated with different underlying causes of sexual aggression. Thus, measurement of physiological reactivity could provide insight into mechanisms relevant to the etiology of sexual aggression. The relationship between sexual aggression and physiological reactivity was investigated in 78 community men (38 sexually aggressive and 40 non-aggressive men). In a laboratory protocol, the men were exposed to neutral, negative-affect-inducing, and positive-affect-inducing stimuli. Men's salivary cortisol concentrations and electrodermal activity (EDA) were measured throughout the laboratory procedure. Sexually aggressive men demonstrated (1) lower overall cortisol levels and (2) lower EDA reactivity in some conditions as compared to non-aggressive men. Results of this study were consistent with the idea that men's sexual aggression is associated with physiological hyporeactivity, a physiological profile that has been found to be associated with externalizing behaviors and psychopathic traits.