The Challenge Project: A treatment program evaluation for perpetrators of child sexual abuse

Abstract

Objective: Research on treatment outcome for sex offenders has been poorly designed, with biased sampling, lack of controls, and a failure to define treatment programs, subjects, and outcome measures. This research aimed to compare group and individual treatment outcomes, with particular reference to program compliance and reoffending. Method: The Challenge Project assessed all 80 convicted perpetrators of child sexual abuse in S. E. London over a 2-year period, and followed them up 1 and 2 years later. The 43 perpetrators who were diverted into the community program received weekly standardized cognitive-behavioral treatment over a 1-year period. Subjects were matched on key variables and entered either group or individual therapy. Results: Some treatment effects could be demonstrated in both group and individual therapy, particularly if individual changes in test scores were examined. Two variables were significantly associated with poor treatment compliance: A history of sexual and/or violent offending, and a history of childhood sexual victimization. However, only one subject had been convicted of a further sexual offense—possession of child pornography—at follow-up. Conclusion: The findings may support professionals in deciding how best to allocate scarce resources; and it is intended to extend the outcome study to at least a 5-year follow-up period, to see whether compliance and shifts in psychological measures are a valid predictor of outcome.