Boy-adult sex was not associated with symptoms when the boys were willing participants
Bauserman and Rind (1997), in a review of the nonclinical literature on boy-adult sex, found that willing relations were associated with neutral or positive reactions. Rind et al. (1998), in their meta-analytic review of college samples, found that boy-adult sex was not associated with symptoms when the boys were willing participants. In these samples, most boys with experiences labeled child sexual abuse reacted positively or neutrally (66%), whereas most girls reacted negatively (72%). These gender differences, which appeared to an equal degree in the national probability samples meta-analytically reviewed by Rind and Tromovitch (1997), imply that it is generally not valid to extrapolate from girls' experiences, especially father-daughter incest, to those of boys.
source: Article 'Gay and Bisexual Adolescent Boys' Sexual Experiences With Men: An Empirical Examination of Psychological Correlates in a Nonclinical Sample' by Bruce Rind (PhD); Department of Psychology, Temple University, Philadelphia, Pennsylvania 19122; www.just-well.dk/rind.htm; Archives of Sexual Behavior, Vol. 30, No.4; 2001