The authors examined records of 239 individuals charged with sexual
offenses and referred by the courts to a forensic service. Defendants
charged with rape were typically under 30 with histories of antisocial
behavior that included other types of violence. Major mental illness was
rare in this group. Child molesters in the sample were of no particular
age, usually had no history of violent behavior, and had a low incidence of
psychosis. The most common secondary diagnosis in both groups was alcohol
or drug abuse.