Sex Differences in Patterns of Genital Sexual Arousal: Measurement Artifacts or True Phenomena?
Sex differences in patterns of sexual arousal have been reported recently. Men’s genital arousal is typically more category-specific than women’s, such that men experience their greatest genital arousal to stimuli depicting their preferred sex partners whereas women experience significant genital arousal to stimuli depicting both their preferred and non-preferred sex partners. In addition, men’s genital and subjective sexual arousal patterns are more concordant than women’s: The correlation between genital and subjective sexual arousal is much larger in men than in women. These sex differences could be due to low response-specificity in the measurement of genital arousal in women. The most commonly used measure of female sexual arousal, vaginal photoplethysmography, has not been fully validated and may not measure sexual arousal specifically. A total of 20 men and 20 women were presented with various sexual and non-sexual emotionally laden short film clips while their genital and subjective sexual arousal were measured. Results suggest that vaginal photoplethysmography is a measure of sexual arousal exclusively. Women’s genital responses were highest during sexual stimuli and absent during all non-sexual stimuli. Sex differences in degree of category-specificity and concordance were replicated: Men’s genital responses were more category-specific than women’s and men’s genital and subjective sexual arousal were more strongly correlated than women’s. The results from the current study support the continued use of vaginal photoplethysmography in investigating sex differences in patterns of sexual arousal.
KeywordsVaginal photoplethysmography Phallometry Category-specificity Concordance Sex differences
- Chivers, M. L., Seto, M. C., Lalumière, M. L., Laan, E., & Grimbos, T. (2007). Agreement of self-reported and genital measures of sexual arousal among men and women: A meta-analysis. Manuscript submitted for publication.Google Scholar
- Fang, B. (1976). Swinging: In retrospect. Journal of Sex Research, 12, 220–237.Google Scholar
- Geer, J., & Janssen, E. (2000). The sexual response system. In J. T. Cacioppo, L. G. Tassinary, & G. G. Berntson (Eds.), Handbook of psychophysiology (2nd ed., pp. 315–341). New York: Cambridge University Press.Google Scholar
- Kinsey, A. C., Pomeroy, W. B., & Martin, C. E. (1948). Sexual behavior in the human male. Philadelphia: Saunders.Google Scholar
- Kinsey, A. C., Pomeroy, W. B., Martin, C. E., & Gebhard, P. H. (1953). Sexual behavior in the human female. Philadelphia: Saunders.Google Scholar
- Laan, E., Sonderman, M., & Janssen, E. (1995, September). Straight and lesbian women’s sexual responses to straight and lesbian erotica: No sexual orientation effects. Poster presented at the annual meeting of the International Academy of Sex Research, Provincetown, MA.Google Scholar
- Levin, R. J. (1998). Assessing human female sexual arousal by vaginal photoplethysmography: A critical examination. Sexologies: European Journal of Medical Sexology, 6, 25–31.Google Scholar
- Pennebaker, J. W., & Roberts, T. (1992). Toward a his and hers theory of emotion: Gender differences in visceral perception. Journal of Social and Clinical Psychology, 11, 199–212.Google Scholar
- Rosen, R. C., & Beck, J. G. (1988). Patterns of sexual arousal: Psychophysiological processes and clinical applications. New York: Guilford Press.Google Scholar
- Rullo, J., Kinnish, K., & Strassberg, D. (2006). Sex differences in the specificity of sexual behavior, fantasy, and romantic attraction. Poster presented at the annual meeting of the International Academy of Sex Research, Amsterdam, The Netherlands.Google Scholar
- Symons, D. (1979). The evolution of human sexuality. New York: Oxford University Press.Google Scholar