Sex offender typologies include naive experimenters, undersocialized child exploiters, pseudo-socialized child exploiters, group-influenced offenders, sexual aggressives, sexual compulsives, and disturbed impulsives. The Adolescent Sexual Offender Treatment Program is a cooperative effort between the juvenile court and a private group mental health practice. Most of the offenders in this program are undersocialized or pseudo-socialized exploiters or group-influenced offenders. More aggressive or disturbed offenders are not appropriate for this program. The program includes psychological assessment, selection procedures, individualized outcome goal and objectives, individual and group therapy, homework assignments, treatment for the participants’ own abuse history, parent involvement, victim protection and aftercare. Each of the program’s four phases has specific behavioral criteria that must be met before the participant can move to the next phase; discharge occurs after completion of all four phases. The average length of treatment is 2 years, although some participants have taken up to twice as long.