[Connection between subjective sexual arousal and genital response: differences between men and women]

The level of agreement between subjective and objective measures of sexual arousal is referred as sexual concordance. Sex is one of the principal moderators and there is a higher level of correspondence in men than in women. The aim of this study is to evaluate the predictive validity of the scales Ratings of Sexual Arousal (RSA) and Ratings of Genital Sensations (RGS), relating their scores with the genital response to visual sexual stimuli in men and women.

A sample of 159 young heterosexuals was used (69 men and 90 women) which completed, firstly, a sociodemographic and sexual story questionnaire, the Sexual Inhibition/Sexual Excitation Scales Short-Form and the SOS-6. At the laboratory, they were exposed to a neutral film and to an explicit sexual content film. The subjective sexual arousal was evaluated with the RSA and RGS scales and the genital response was registered through a plethysmography (men) and a photo-plethysmography (women).

Significant correlations were obtained between subjective and objective sexual arousal only in men. The RGS scale has the capacity to predict the erection response toward sexual stimuli.

The theory of differences in sexual concordance between men and women was endorsed. Modest evidence about the predictive validity of the subjective sexual arousal evaluation scale was found only in men. It arises the need for subjective and objective assessment of sexual arousal, in clinical settings and research area.