Kelly D. Suschinsky

Does Menstrual Cycle Phase Influence the Gender Specificity of Heterosexual Women’s Genital and Subjective Sexual Arousal?

Unlike men, heterosexual women’s genital arousal is gender nonspecific, such that heterosexual women show relatively similar genital arousal to sexual stimuli depicting men and women but typically report greater subjective arousal to male stimuli. Based on the ovulatory-shift hypothesis—that women show a mid-cycle shift in preferences towards more masculine features during peak fertility—we predicted that heterosexual women’s genital and subjective arousal would be gender specific (more arousal towards male stimuli) during peak fertility. Twenty-two naturally-cycling heterosexual women were assessed during the follicular and luteal phases of their menstrual cycle to examine the role of menstrual cycle phase in gender specificity of genital and subjective sexual arousal. Menstrual cycle phase was confirmed with salivary hormone assays; phase at the time of first testing was counterbalanced. Women’s genital and subjective sexual arousal patterns were gender nonspecific, irrespective of cycle phase. Cycle phase at first testing session did not influence genital or subjective arousal in the second testing session. Similar to previous research, women’s genital and subjective sexual arousal varied with cues of sexual activity, but neither genital nor subjective sexual arousal varied by gender cues, with the exception of masturbation stimuli, where women showed higher genital arousal to the stimuli depicting male compared to female actors. These data suggest that menstrual cycle phase does not influence the gender specificity of heterosexual women’s genital and subjective sexual arousal.

Women's genital sexual arousal to oral versus penetrative heterosexual sex varies with menstrual cycle phase at first exposure

Reproductive-aged women show increased interest in sexual activity during the fertile phase of the menstrual cycle that can motivate sexual behavior and thereby increase the likelihood of conception. We examined whether women demonstrated greater sexual responses (subjective and genital sexual arousal) to penetrative versus oral sexual activities during the fertile versus non-fertile phases of their cycles, and whether womens arousal responses were influenced by the phase during which they were first exposed to these sexual stimuli (e.g., Slob et al., 1991; Wallen and Rupp, 2010). Twenty-two androphilic women completed two identical sexual arousal assessments in which genital responses were measured with a vaginal photoplethysmograph and their feelings of sexual arousal were recorded. Women viewed an array of 90s films varying by couple type (female-female, male-male, female-male) and sexual activity type (oral or penetrative), during the fertile (follicular) and non-fertile (luteal) phases of their menstrual cycle, with the order of cycle phase at the first testing session counter-balanced. Women tested first in the fertile phase showed significantly greater genital arousal to female-male penetrative versus oral sex in both testing sessions, whereas self-reports of sexual arousal were not affected by cycle phase or testing order. These results contribute to a growing body of research suggesting that fertility status at first exposure to sexual stimuli has a significant effect on subsequent sexual responses to sexual stimuli, and that this effect may differ for subjective versus genital sexual arousal.

Sex Differences in Sexual Concordance: A Reply to Brody (2012)

Sexual concordance refers to the relationship between physiological responses(e.g.,genitalvasocongestion)andself-reported responses (e.g., feelings of sexual arousal or self-reported perceptions of genital responses) to sexual stimuli. Even though there is variability in women’s sexual concordance (Chivers, Seto, Lalumiere, Laan, & Grimbos, 2010; Kukkonen, Binik, Amsel, & Carrier, 2010; Suschinsky & Lalumiere, 2012), on average women exhibit substantially lower sexual concordance than men (Chivers et al., 2010). This is a widely replicated finding confirmed by meta-analysis. In the article discussed by Brody (2012), we explored a potential explanation for this sex difference, one that implicates interoceptive ability, or one’s awareness of physiological states and responses (Suschinsky & Lalumiere, 2012). In laboratorysettings,womenare lessaccurateat trackingand reporting a host of non-sexual responses (e.g., heart rate, blood pressure, blood glucose, stomach contractions) (reviewed in Suschinsky & Lalumiere, 2012). In our study, we assessed whetherwomen’slowersexualconcordancewasamanifestation of their lower awareness of physiological responses generally. Althoughwomeninourstudyshowed lowersexualconcordance and poorer interoception than men did, we did not obtain a significant relationship between sexual concordance and interoceptive awareness in either sex. Therefore, our hypothesis regarding the relationships between sexual concordance, interoception, and gender was not supported. Brody (2012) brought up several questions and concerns regarding our study. These included the measures of interoception that we used, issues of socially desirable responding, high sexual concordance in some samples of women (including those with high orgasm consistency during certain sexual activities), and statistical issues. We appreciate the opportunity to clarify these issues here.

Genital Responses to Rape Vignettes Among Young Men: The Influence of Mood and Directed Attention

Although it is clear that men with a history of sexual assaults against women produce higher relative genital responses to rape vignettes in the laboratory than do men without such a history, it remains unclear what aspects of the vignettes are eliciting these responses, and whether the genital responses are affected by situational factors. The antisocial tendencies hypothesis states that many men are inhibited by cues of violence, suffering, and coercion in rape vignettes, but other men, particularly antisocial and sexually aggressive men, are not so inhibited. In this study, we investigated whether the hypothesized inhibition to rape vignettes among nonoffenders could be affected by manipulation of mood and directed attention. A total of 48 young men were exposed to audio-recorded vignettes describing mutually consenting and nonviolent sexual interactions, mutually consenting and violent sexual interactions, nonconsenting and violent sexual interactions, and nonsexual and nonviolent social interactions (within-subjects). Participants were randomly assigned to a mood manipulation designed to induce a happy, neutral, or sad mood (between-subjects). All were asked to pay attention to either sex words or violent words while listening to the vignettes (within-subjects). As is typically observed, genital responses were lower (inhibited) when vignettes included cues of violence or nonconsent. Both happy and sad mood inductions reduced this inhibition, so that men induced into a happy or sad mood showed greater relative responding to cues of violence or nonconsent compared with men in a neutral mood. The attention manipulation had no significant effect. Results suggest that genital responses to rape cues can be situationally influenced, but not necessarily as predicted by the antisocial tendencies hypothesis.

The Clitoral Photoplethysmograph: A Pilot Study Examining Discriminant and Convergent Validity.

INTRODUCTION The clitoral photoplethysmograph (CPP) is a relatively new device used to measure changes in clitoral blood volume (CBV); however, its construct validity has not yet been evaluated. AIM To evaluate the discriminant and convergent validity of the CPP. For discriminant validity, CBV responses should differ between sexual and nonsexual emotional films if the CPP accurately assesses clitoral vasocongestion associated with sexual arousal; for convergent validity, CBV responses should significantly correlate with subjective reports of sexual arousal. METHODS Twenty women (M age = 21.2 years, SD = 3.4) watched neutral, anxiety-inducing, exhilarating, and sexual (female-male sex) audiovisual stimuli while their genital responses were measured simultaneously using vaginal and clitoral photoplethysmographs and CPPs. Most of these participants continuously reported sexual arousal throughout each stimulus (n = 16), and all reported their sexual and nonsexual affect before and after each stimulus; subjective responses were recorded via button presses using a keypad. MAIN OUTCOME MEASURES Vaginal pulse amplitude (VPA), CBV, and self-reported sexual arousal and nonsexual affect were used as main outcome measures. RESULTS CBV demonstrated both discriminant and convergent validity. CBV responses were similar to VPA responses and self-reported sexual arousal; all responses differed significantly as a function of stimulus content, with the sexual stimulus eliciting greater relative changes than nonsexual stimuli. CBV, but not VPA, was significantly (negatively) correlated with continuous self-reported sexual arousal during the shorter sexual stimulus. CBV was significantly negatively correlated with VPA for the shorter sexual stimulus. CONCLUSION CBV may be a valid measure of womens genital sexual arousal that provides complementary information to VPA and correlates with self-reported sexual arousal. Given our relatively small sample size, and that this is among the first research to use the CPP, the current findings must be replicated. More research using the CPP and other devices is required for a more comprehensive description of womens physiological sexual arousal.

The Relationship Between Sexual Concordance and Orgasm Consistency in Women

Sexual concordance (the relationship between genital and self-reported sexual responses) may be associated with orgasm consistency (OC; the proportion of sexual acts leading to orgasm) during penile–vaginal intercourse (PVI) in women. We investigated the relationship between women’s sexual concordance (assessed using different stimulus modalities and self-reported sexual arousal methods) and OC during various sexual activities (assessed using different types of questions). For Study 1 (n = 51), when sexual concordance was assessed using audiovisual sexual stimuli, we did not find a statistically significant relationship between OC and poststimulus self-reports of sexual arousal or genital sensations, raw values of OC, or ranges of OC. For Study 2 (n = 44), where sexual concordance was assessed using audionarrative sexual stimuli, we did find a statistically significant relationship between PVI OC and sexual concordance using change in self-reported sexual arousal, and ranges of orgasm consistency. Two findings were inconsistent with previous research. First, OC varied significantly by activity type in both studies; masturbation yielded the highest OC. Second, PVI OC was significantly related to oral sex and masturbation OC (Study 2). We discuss the need for further research and various factors that may affect women’s orgasm consistency and sexual concordance.

“Corrigendum to: Women's genital sexual arousal to oral versus penetrative heterosexual sex varies with menstrual cycle phase at first exposure” [Horm. Behav. 65 (2014) 319–327]

The authors regret the omission of the following text from their article: The current study was supported by financial assistance to MLC from the Natural Sciences and Engineering Research Council of Canada (386198-10) and Queens University. We would like to thank S. Dawson, D. Krupp, and M. Seto for their helpful feedback on an earlier version of the manuscript, and D. Puts and S. van Anders for their assistance with hormonal measures.