The sexual inhibition (SIS) and sexual excitation (SES) scales: I. Measuring sexual inhibition and excitation proneness in men

This study involves the development and initial validation of a questionnaire measuring the propensity for sexual inhibition and excitation in men: the Sexual Inhibition & Sexual Excitation Scales (SIS/SES). The underlying theoretical model postulates that sexual response and associated behavior depend on dual control mechanisms, involving excitatory and inhibitory neurophysiological systems. The scales and their discriminant and convergent validity and test‐retest reliability are described. In a sample of 408 sexually functional men (mean age = 22.8 years), factor analyses identified three higher‐level factors: two related to sexual inhibition and one to sexual excitation. Multigroup Confirmatory Factor Analyses revealed that the factor structure provided an acceptable fit to the data obtained in a second (N = 459; mean age = 20.9 years) and third (N = 313; mean age = 46.2 years) sample of men, with similar distributions and relationships with other measures. Theoretical issues and areas for further research, including male sexual dysfunction and risk taking, are discussed.     

Examining the Psychometric Properties of the Sexual Excitation/Sexual Inhibition Inventory for Women (SESII-W) in a Sample of Lesbian and Bisexual Women

The Sexual Excitation/Sexual Inhibition Inventory for Women (SESII-W) assesses propensities for sexual excitation (SE) and inhibition (SI). Previous research utilizing the SESII-W included samples comprised exclusively or almost entirely of heterosexual women. The purpose of this study was to examine the psychometric properties of the SESII-W and assess its relation to aspects of sexual function within a sample of lesbian and bisexual women. The sample included 974 self-identified bisexual (n = 733) or lesbian/homosexual (n = 241) women who completed an online survey including items assessing women’s sexual behaviors, feelings, and functioning, sociodemographics, and the SESII-W. The sample was split; exploratory factor analyses were conducted on the first half, yielding eight lower-order factors with two higher-order factors. Confirmatory factor analysis was conducted on the second half and suggested reasonable model fit. SI was positively correlated with sexual problems and negatively correlated with sexual pleasure; the correlations were significant but small. Hierarchical regression analyses were conducted to examine the relationships between SESII-W scores and sexual problems/sexual pleasure, controlling for age, relationship duration, and relationship status. Four lower-order factors predicted reports of sexual problems. Findings indicated the SESII-W has similar psychometric properties among sexual minority women as it does among heterosexual women.     

The Sexual Inhibition (SIS) and Sexual Excitation (SES) Scales: II. Predicting psychophysiological response pattens

This study evaluated the predictive value of a newly developed measure of the propensity for sexual inhibition and excitation; the Sexual Inhibition Sexual Excitation Scales (SIS/SES). Sexual, cardiovascular, and startle responses were measured in a group of 40 sexually functional men during the presentation of threatening and nonthreatening erotic films. Two levels of performance demand were created and two films were combined with a distraction task. Participants were assigned to high and low groups for each of the three SIS/SES scales. As predicted, men with high SES scores showed generally higher sexual responses. High and low SIS1 groups did not differ in their responses. Men with high and low SIS2 scores did not differ in their responses to nonthreatening stimuli; however, low SIS2 men showed greater genital response to the threatening stimuli. The findings provide support for the value of the SIS/SES scales in predicting sexual responses.     

An Exploratory Study of Factors Associated With Sexual Inhibition and Excitation: Findings From a Representative Survey in Flanders

The dual control model of sexual response was developed to account for individual differences in sexual excitation and inhibition. According to this model, the balance between excitation and inhibition is of crucial importance in determining an individual's sexual response to a stimulus. In this study, we aimed to contribute to the existing literature on sexual excitation and inhibition in two ways. First, we investigated the distribution of excitation and inhibition scores in a representative population sample. Second, we conducted an exploratory study of the factors associated with variation in excitation and inhibition. We used data from a representative survey on the sexual health of men and women in Flanders (N = 1,825; mean age = 43.77; SD = 17.98). The results indicated that excitation and inhibition had a near normal distribution among men and women. However, the scores for sexual inhibition due to threat of performance failure (SIS1) among men, and for sexual inhibition due to the threat of performance consequences (SIS2) among women, were somewhat skewed. Furthermore, age, gender, physical and mental health, education level, and attitudes toward sex were all to some extent associated with differences in inhibition, excitation, or both.     

Gender Differences in the Development of Sexual Excitation and Inhibition Through the Life Course: Preliminary Findings from a Representative Study in Flanders

The dual control model proposes that there are individual differences in the propensity for sexual excitation and sexual inhibition. Research to date has considered the effect of age on these traits as a simple linear effect, and studies examining gender differences in age effects are lacking. There are, however, indications that the associations of age with excitation and inhibition are nonlinear and that there might be gender differences in these associations. The aim of this study was to examine how these traits develop through an individual’s life and whether there are gender differences in this development. In this study we applied polynomial regression analyses to examine the interaction effects of age and gender on sexual excitation and inhibition. We used data from a representative cross-sectional survey on sexual health in Flanders (N = 1,825; mean age = 43.77; SD = 17.98). Most of the associations of excitation and inhibition with age were nonlinear, and there were substantial gender differences in these associations. This indicates that the interplay between age, gender, and excitation and inhibition should be taken into account in research on (dys)functional sexuality.     

Genetic and environmental effects on sexual excitation and sexual inhibition in men

The Sexual Inhibition and Sexual Excitation Scales (SIS/SES) measure the propensity for sexual inhibition and excitation in men. According to the theoretical model underlying the SIS/SES, sexual response and associated behavior depend on dual control mechanisms in the brain involving the balance of excitatory and inhibitory systems which impinge on sexual response. Previous research with the SIS/SES has indicated one higher-order excitatory factor and two higher-order inhibitory factors affecting sexual response. The present study analyzed the item structure and the psychometric properties of the instrument in a population based sample of Finnish male twins (N = 1,289), and, including 37 out of 45 items of the original scales, estimated the heritability of and the environmental influences on the excitatory and inhibitory mechanisms. The twin correlations and the structural equation modeling suggested modest heritability for both inhibitory mechanisms. Sexual excitation, in contrast, was not influenced by genetic effects and similarities between twins for this mechanism seemed to be caused by the common environment of the twins.     

Sexual Well-Being in Older Women: The Relevance of Sexual Excitation and Sexual Inhibition

The aim of this study was to use the dual control model of sexual response (DCM) to investigate variation in sexual well-being among women 50 years of age and older. Data from 185 women 50 years of age and older (M = 59.46, SD = 6.96) were used to examine the relationships between sexual excitation (SE) and sexual inhibition (SI) and their lower-order factors to indicators of sexual well-being (i.e., sexual functioning, satisfaction, distress, frequency of sexual activity, and breadth of sexual behavior). Possible moderating factors were also explored. Independently, SE and SI were associated with the majority of the indicators of sexual well-being, and the directions of associations were consistent with the tenets of the DCM. SE and SI lower-order factors were significant predictors of sexual function, satisfaction, and frequency of sexual activity. Sexual distress was predicted more strongly by SI factors and breadth of sexual behavior by one SE lower-order factor (arousability). Partner physical and mental health and participant’s own mental health were identified as moderating variables of these associations. Findings of this study are discussed considering the contribution of the DCM to understanding the role of diversity in older women’s sexual well-being.     

Exploring the Impact of Personal and Partner Traits on Sexuality: Sexual Excitation,Sexual Inhibition,and Big Five Predict Sexual Function in Couples

Sexual difficulties are common among women and men and are associated with various mental and physical health problems. Although psychological traits are known to impact sexual attitudes and behavior, sexuality- and personality-related traits have not been jointly investigated to assess their relevance for sexual functioning in couples. The aim of this study was to investigate how psychological traits of two partners influence women’s and men’s sexual function. Data from 964 couples, representative of the adult population in Germany, were analyzed. Sexual function was assessed with the Female Sexual Function Index (FSFI) and the International Index of Erectile Function (IIEF). Sexuality-related traits were measured with the Sexual Excitation/Sexual Inhibition Inventory for Women and Men (SESII-W/M). Personality was measured with self-report and partner-rating versions of the Big Five Inventory (BFI). Sexual excitation was a positive and sexual inhibition was a negative predictor of sexual function in both genders. Women whose partners were sexually inhibited reported lower sexual function. Conscientious individuals reported better sexual function. Women whose partners were more conscientious also had better sexual function. Assessing partner-related factors may be helpful to identify predisposing and maintaining factors of sexual dysfunctions, especially in women.     

Sexual Desire Inventory: Two or Three Dimensions?

The Sexual Desire Inventory (SDI), developed by Spector, Carey, and Steinberg in 1996, has been widely used to assess sexual desire in men and women throughout the world. This questionnaire categorizes sexual desire in two dimensions: dyadic sexual desire and solitary sexual desire. Our study addressed the factorial structure of the SDI, an aspect that until now has been largely neglected. We recruited two samples of Spanish men and women involved in stable heterosexual relationships. The first sample consisted of 3,417 subjects (1,600 males and 1,817 females), ages 18 to 84; the second sample consisted of 677 subjects (285 males and 392 females), ages 18 to 50. The results of an exploratory factor analysis (EFA) showed that instead of two dimensions the SDI should have three: (1) partner-focused dyadic sexual desire, (2) general dyadic sexual desire for an attractive person, and (3) solitary sexual desire. A confirmatory factor analysis (CFA) supported the robustness of this new three-factor structure. No gender differences were revealed, except for dyadic sexual desire for an attractive person, for which men reported higher scores. Good validity and reliability values were obtained. Moreover, standard scores for men and women by different age groups were developed.     

Sexual Functioning in Spanish and Portuguese Young Adults: Initial Validation of the Arizona Sexual Experience Scale

Objectives: The authors conducted an initial validation of the Arizona Sexual Experience Scale (ASEX) and examined the sexual function of Spanish and Portuguese young adults. Methods: Participants were 523 Spanish and 595 Portuguese heterosexual young adults who completed a background questionnaire, the ASEX, and measures of sexual sensation seeking, excitation, and inhibition. Results: The ASEX showed good reliability and validity. Participants reported good sexual function. The most prevalent difficulties in men were related to desire and orgasm, and to orgasm and satisfaction in women. Conclusions: This is a psychometrically sound instrument to assess sexual functioning in Spanish and Portuguese young adults.     

The relationship between negative mood and sexuality in heterosexual college woman and men

Negative mood states, such as depression and anxiety, are typically associated with decreased sexual interest and arousal. However, there is also some evidence that depressed or anxious mood may increase sexual interest or arousal in some individuals. In this study, 663 female college students (mean age = 18.9 years, SD = 1.21) answered questions regarding the effects of anxious and depressed mood on sexual interest and arousal and completed trait measures of sexual excitation and inhibition, anxiety, and depression. The majority of women reported decreased sexual interest and response when feeling depressed or anxious; a minority (about 10%) of women, however, reported increased sexual interest/response during anxious and depressed mood. This sample of women was compared to a sample of 399 college-aged men. In general, men were more likely than women to report increased sexual interest during negative mood states. Of the variables explored, propensity for sexual excitation was the strongest predictor of the relationship between negative mood and sexuality in women. Individual differences in the effects of negative mood may prove relevant to our understanding of a variety of topics, including risky and compulsive sexual behavior and sexual dysfunction.     

The relationship between negative mood and sexuality in heterosexual college women and men

Negative mood states, such as depression and anxiety, are typically associated with decreased sexual interest and arousal. However, there is also some evidence that depressed or anxious mood may increase sexual interest or arousal in some individuals. In this study, 663 female college students (mean age = 18.9 years, SD = 1.21) answered questions regarding the effects of anxious and depressed mood on sexual interest and arousal and completed trait measures of sexual excitation and inhibition, anxiety, and depression. The majority of women reported decreased sexual interest and response when feeling depressed or anxious; a minority (about 10%) of women, however, reported increased sexual interest/response during anxious and depressed mood. This sample of women was compared to a sample of 399 college‐aged men. In general, men were more likely than women to report increased sexual interest during negative mood states. Of the variables explored, propensity for sexual excitation was the strongest predictor of the relationship between negative mood and sexuality in women. Individual differences in the effects of negative mood may prove relevant to our understanding of a variety of topics, including “risky” and “compulsive” sexual behavior and sexual dysfunction.     

Women's scores on the sexual inhibition/sexual excitation scales (SIS/SES): gender similarities and differences

The Sexual Inhibition/Sexual Excitation Scales (SIS/SES) assess individual propensities to become sexually aroused and to inhibit arousal. Prior analyses of men's SIS/SES data (Janssen, Vorst, Finn, & Bancroft, 2002a) yielded one excitation factor (SES) and two inhibitory factors (SIS1/Threat of Performance Failure and SIS2/Threat of Performance Consequences). The current study utilized a dataset of 2,045 undergraduates (1,067 women and 978 men) to examine the psychometric properties of women's SIS/SES scores. Women scored higher on sexual inhibition and lower on sexual excitation compared with men. The convergent/discriminant validity of women's SIS/SES scores globally resembled men's, but showed stronger associations with other sexuality - related measures and less pronounced relationships with measures of general behavioral approach/avoidance. The test-retest reliability of men's and women's SIS/SES scores were similar, but individual items exhibited differential relevance to men's and women's arousal. An exploratory factor analysis of women's scores was utilized to further examine shared and unshared themes.     

Using the Dual Control Model to Investigate the Relationship Between Mood,Genital, and Self-Reported Sexual Arousal in Men and Women

Recent findings suggest that there is considerable interindividual variability in how mood affects sexual arousal and that the dual control model may be helpful in explaining this variation. The current research investigated whether mood interacted with sexual excitation and inhibition proneness to predict subjective and genital arousal. In this study, 33 participants (18 men; 15 women), ages 18 to 45, attended three laboratory sessions where they completed questionnaires assessing preexisting mood and propensity for sexual excitation and inhibition, then watched a series of neutral and sexually explicit films. Subjective sexual arousal was continuously indicated during each film, while genital temperature was measured using thermographic imaging. Sexual excitation and inhibition interacted with various mood scores to significantly predict both subjective and genital arousal in men and women. Several gender differences were found. For example, vigor scores interacted with sexual excitation proneness to significantly predict genital but not subjective arousal in women, while the same interaction significantly predicted subjective but not genital arousal in men. The findings supported the hypothesis that the dual control model is an important framework in understanding how mood influences both subjective and genital sexual arousal.     

Sexual desire in later life

The has been relatively little research on sexuality in later life, particularly among persons over 60 years of age. The existing literature consists of studies of small samples, much of it from a biomedical perspective. This literature suggests that age, hormone levels, specific illnesses, and various medications negatively affect sexual functioning in older persons. The study reports results from a survey of a large sample (N=1,384) of persons age 45 and older that included measures of a variety of biological, psychological and social factors that potentially influence sexual functioning. We report bivariate and multivariate analysis conducted separately for women and men. We find that the principal influences on strength of sexual desire among women are age, the importance of sex to the person, and education. In this sample of the population of older persons, attitudes are more significant influences on sexual desire than biomedical factors.     

Sexual Body Image and Its Correlates: A Population-Based Study of Finnish Women and Men

ABSTRACT

Sexual body image was examined in a population-based sample of 9,532 Finnish men and women, age 18 to 49 years. More than one half of women and men were satisfied with their genitals, one half of the women were satisfied with their breasts. Higher levels of genital satisfaction were related to higher frequencies of sexual behavior and better sexual function for both genders. For men, penis size satisfaction was associated with lower levels of premature ejaculation and better erectile function. Sexual body image was related to overall perceived attractiveness, for women a higher body mass index was related to satisfaction with breast size. Having children was negatively related to women's sexual body image, abortions and miscarriages likewise. Limitations of the study and clinical implications of the findings are discussed.     

Sexual Behavior in Dutch and Belgian Children as Observed by Their Mothers

Abstract

Mothers' observations (N = 670) of child sexual behavior have been collected using an adapted version of the Child Sexual Behavior Inventory as developed by Friedrich et al. (1991). The ages of the boys (N = 351) and girls (N = 319) observed range from 0 to 11 years. The results show that there is a lot of variance in the frequency with which specific sexual behaviors are observed. The occurrence of specific behaviors varies with age. While some behaviors are observed more frequently as the child gets older, others are observed less frequently. Boys and girls only differ in a few behaviors. The finding that the behavioral items form an internally consistent scale suggests that there is a general tendency to show sexually related behaviors, which is more or less strongly present in children, which might be a precursor of differential levels of sexual desires in adults.     

Sexual desire in later life

There has been relatively little research on sexuality in later life, particularly among persons over 60 years of age. The existing literature consists of studies of small samples, much of it from a biomedical perspective. This literature suggests that age, hormone levels, specific illnesses, and various medications negatively affect sexual functioning in older persons. This study reports results from a survey of a large sample (N = 1,384) of persons age 45 and older that included measures of a variety of biological, psychological and social factors that potentially influence sexual functioning. We report bivariate and multivariate analyses conducted separately for women and men. We find that the principal influences on strength of sexual desire among women are age, the importance of sex to the person, and the presence of a sexual partner. Among men, they are age, the importance of sex to the person, and education. In this sample of the population of older persons, attitudes are more significant influences on sexual desire than biomedical factors.     

Coerced Sexual Experiences Among Adolescent Substance Abusers: A Potential Pathway to Increased Vulnerability to HIV Exposure

This study describes the forced sexual experiences, serious internalizing problems, risky sexual behavior, and alcohol-related correlates of risky sexual behavior of 120 substance abusing adolescents and young adults (87 men, 33 women; mean age = 17.2 years) undergoing treatment. Prior coerced sexual experiences were associated with suicidal thoughts and attempts, higher levels of risky sexual behaviors, avoidance motives for drinking, and sexual decision-making conducive to risky sexual behavior. Sexual coercion was associated with patterns of sexual behavior and alcohol use that potentially increase vulnerability to HIV exposure. Social workers can play a number of significant roles in addressing ongoing psychological distress associated with sexual coercion among these predominantly female adolescents. Therefore, effective social work practice should enhance treatment effectiveness and reduce risk for a range of maladaptive outcomes including exposure to sexually transmitted diseases (STDs) and revictimization.