When we understand that children [with Fetal Alcohol Syndrome] grow up with normal hormone surges (that begin well before puberty) and that they are stunted with the social development of a kindergartener even as they become of legal adult age, and that their frontal lobes are damaged in a way that interferes with their judgment and impulse control, it is easy to see how sexual behaviors can be a problem. When you add their vulnerability and naivete to the palette, you get a picture of how high the risk is of becoming a victim, a perpetrator, or both.
Teresa Kellerman, Fetal Alcohol Syndrome Community Resource Center, "FAS and Inappropriate Sexual Behavior"