Previous research has shown that sexual arousability in human males declines from its peak in early adolescence until old age. This study compared the rates of decline in three groups of males: those most attracted sexually to prepubescent children (pedophiles), those most attracted to pubescent children (hebephiles), and those most attracted to physically mature persons (teleiophiles). The participants were 2,028 patients referred to Toronto's Centre for Addiction and Mental Health from 1995 to 2004 for evaluation of criminal or otherwise disturbing sexual behavior, but not for erectile or ejaculatory problems. All underwent phallometric assessment for erotic age-preference. This is a psychophysiological technique in which an individual's penile blood volume is monitored while he is presented with a standardized set of laboratory stimuli depicting male and female children, pubescents, and adults. The experimental measure of sexual al-ousability was the average of the participant's three greatest penile responses to any stimulus category, expressed in cubic cm of blood volume increase. The results showed that sexual arousability was an inverse function of age, and that there were no differences between the pedophiles, hebephiles, and teleiophiles in the rate at which arousability declined.
Abel, G.G., Becker, J.V., Cunningham-Rathner, J., Mittelman, M., & Rouleau, J.L. ( 1988). Multiple paraphilic diagnoses among sex offenders . Bulletin of the American Academy of Psychiatry and the Law , 16, 153-168.
2.
Baker, H.W.G., & Hudson, B. (1983). Changes in the pituitary-testicular axis with age. Monographs on Endocrinology, 25, 71-83.
3.
Barbaree, H.E., Blanchard, R., & Langton, C.M. (2003). The development of sexual aggression through the life span: The effect of age on sexual arousal and recidivism among sex offenders . In R. A. Prentky, E. S. Janus, & M. C. Seto (Eds.), Sexually coercive behavior: Understanding and management (Vol. 989, pp. 59-71). New York: Annals of the New York Academy of Sciences.
4.
Blanchard, R., Barbaree, H.E., Bogaert, A.F., Dickey, R., Klassen, P., Kuban, M.E., et al (2000). Fraternal birth order and sexual orientation in pedophiles. Archives of Sexual Behavior, 29, 463-478.
5.
Blanchard, R., Christensen, B.K., Strong, S.M., Cantor, J.M., Kuban, M.E., Klassen, P., et al. (2002). Retrospective self-reports of childhood accidents causing unconsciousness in phallometrically diagnosed pedophiles . Archives of Sexual Behavior, 31, 511-526.
6.
Blanchard, R., Klassen, P., Dickey, R., Kuban, M.E., & Blak, T. (2001). Sensitivity and specificity of the phallometric test for pedophilia in nonadmitting sex offenders. Psychological Assessment, 13, 118-126.
7.
Blanchard, R., Kuban, M.E., Klassen, P., Dickey, R., Christensen, B.K., Cantor, J.M., et al (2003). Self-reported head injuries before and after age 13 in pedophilic and nonpedophilic men referred for clinical assessment . Archives of Sexual Behavior, 32, 573-581.
8.
Bogaert, A.F. (2001). Handedness, criminality, and sexual offending . Neuropsychologia, 39, 465-469.
9.
Cantor, J.M., Blanchard, R., Christensen, B.K., Dickey, R., Klassen, P.E., Beckstead, A.L., et al. (2004). Intelligence, memory, and handedness in pedophilia. Neuropsychology, 18, 3-14.
10.
Cantor, J.M., Blanchard, R., Robichaud, L.K., & Christensen, B.K. (2005). Quantitative reanalysis of aggregate data on IQ in sexual offenders. Psychological Bulletin, 131, 555-568.
11.
Cantor, J.M., Klassen, P.E., Dickey, R., Christensen, B.K., Kuban, M.E., Blak, T., et al. (2005). Handedness in pedophilia and hebephilia . Archives of Sexual Behavior, 34, 447-459.
Denti, L., Pasolini, G., Sanfelici, L., Benedetti, R., Cecchetti, A., Ceda, G.P., et al. (2000). Aging-related decline of gonadal function in healthy men: Correlation with body composition and lipoproteins. Journal of the American Geriatrics Society, 48, 51-58.
14.
Feldman, H.A., Goldstein, I., Hatzichristou, D.G., Krane, R.J., & McKinlay, J.B. (1994). Impotence and its medical and psychosocial correlates: Results of the Massachusetts male aging study . Journal of Urology, 151, 54-61.
15.
Finkelhor, D. (1986). Abusers: Special topics. In D. Finkelhor, S. Araji , L. Baron, A. Browne, S. Doyle Peters, & G. E. Wyatt (Eds.), A sourcebook on child sexual abuse (pp. 119-142). Beverly Hills, CA: Sage.
16.
Freund, K. (1967). Diagnosing homo- or heterosexuality and erotic age-preference by means of a psychophysiological test. Behaviour Research and Therapy, 5, 209-228.
17.
Freund, K., Sedlacek, F., & Knob, K. ( 1965). A simple transducer for mechanical plethysmography of the male genital. Journal of the Experimental Analysis of Behavior, 8, 169-170.
18.
Gebhard, P.H., Gagnon, J.H., Pomeroy, W.B., & Christenson, C.V. (1965). Sex offenders: An analysis of types. New York: Harper and Row .
19.
Glueck, B.C. Jr. (1955). Final report: Research project for the study and treatment of persons convicted of crimes involving sexual aberrations, June 1952 to June 1955. New York: New York State Department of Mental Hygiene.
20.
Hall, G.C.N. ( 1991). Sexual arousal as a function of physiological and cognitive variables in a sexual offender population. Archives of Sexual Behavior, 20, 359-369.
21.
Hanson, R.K., & Bussiere, M.T. (1998). Predicting relapse: A meta-analysis of sexual offender recidivism studies. Journal of Consulting and Clinical Psychology, 66, 348-362.
22.
Hanson, R.K., Steffy, R.A., & Gauthier, R. (1993). Long-term recidivism of child molesters. Journal of Consulting and Clinical Psychology, 61, 646-652.
23.
Hirschfeld, M. ( 1920). Die Homosexualitdt des Mannes und des Weibes [Homosexuality in males and females]. Berlin: Louis Marcus.
24.
Jankowska, E.A., Rogucka, E., Medras, M., & Welon, Z. (2000). Relationships between age-related changes of sex steroids, obesity, and body fat distribution among healthy Polish males. Medical Science Monitor, 6, 1159-1164.
25.
Kaemingk, K.L., Koselka, M., Becker, J.V., & Kaplan, M.S. (1995). Age and adolescent sexual offender arousal. Sexual Abuse: A Journal of Research and Treatment, 7, 249-257.
26.
Karacan, I., Salis, P.J., Thornby, J.I., & Williams, R.L. (1976). The ontogeny of nocturnal penile tumescence. Waking and Sleeping, 1, 27-44.
27.
Kuban, M., Barbaree, H.E., & Blanchard, R. (1999). A comparison of volume and circumference phallometry: Response magnitude and method agreement. Archives of Sexual Behavior, 28, 345-359.
28.
Prentky, R.A., Lee, A.F., Knight, R.A., & Cerce, D.D. (1997). Recidivism rates among child molesters and rapists: A methodological analysis. Law and Human Behavior, 21, 635-659.
29.
Rowland, D.L., Greenleaf, W.J., Dorfman, L.J., & Davidson, J.M. (1993). Aging and sexual function in men. Archives of Sexual Behavior, 22, 545-557.
30.
Schiavi, R.C. (1999). Aging and male sexuality. Cambridge, UK: Cambridge University Press.
31.
Udry, J.R., Billy, J.O.G., Morris, N.M., Groff, T.R., & Raj, M.H. (1985). Serum androgenic hormones motivate sexual behavior in adolescent boys. Fertility and Sterility, 43, 90-94.
32.
von Krafft-Ebing, R. (1965). Psychopathia sexualis: A medico-forensic study (H. E. Wedeck, Trans.). New York: Putnam. (Original work published 1886).
