Freund K, Langevin R, Wescom T, Zajac Y
Arch Sex Behav. 1975 Sep;4(5):509-18. doi: 10.1007/BF01542129.
Androphilic, ephebophilic, and homosexual pedophilic males were compared on heterosexual interest and arousal potential. The former was measured by the subjects' retrospective reports and the latter by penile responses to pictures of females. The penile responses of the ephebophilic and homosexual pedophilic groups to pictures of physically mature females were not different from those of androphilic males. In the present study as well as in an earlier one, the ephebophilic males responded significantly more to physically mature males than to physically mature females. Homosexual pedophilic males showed little difference in responses to physically mature males and females. In retrospective reports of heterosexual interest and experience and of development of homosexual interest and activities, there were only two differences among the groups: as opposed to androphilic males, a relatively greater number of ephebophilic and homosexual pedophilic males indicated that up to age 15 or later they had felt attracted exclusively to females and that they had been seduced in childhood or early adolescence by a male. These results will have to be replicated before being accepted as reliable. As in some earlier studies, there was a weak but significant correlation of degree of "feminine gender identity" with age at onset of homosexual interest and with heterosexual interest or experience. A higher degree of feminine gender identity went together with less heterosexual interest and experience and with an earlier onset of homosexual interest and experience.