First Report of the Collaborative Outcome Data Project on the Effectiveness of Psychological Treatment for Sex Offenders

  title={First Report of the Collaborative Outcome Data Project on the Effectiveness of Psychological Treatment for Sex Offenders},
  author={R. Karl Hanson and Arthur Gordon and Andrew J. R. Harris and Janice K. Marques and William Murphy and Vernon l. Quinsey and Michael C. Seto},
  journal={Sexual Abuse: A Journal of Research and Treatment},
This meta-analytic review examined the effectiveness of psychological treatment for sex offenders by summarizing data from 43 studies (combined n = 9,454). Averaged across all studies, the sexual offence recidivism rate was lower for the treatment groups (12.3%) than the comparison groups (16.8%, 38 studies, unweighted average). A similar pattern was found for general recidivism, although the overall rates were predictably higher (treatment 27.9%, comparison 39.2%, 30 studies). Current… 
The effectiveness of treatment for sexual offenders: A comprehensive meta-analysis
The article reports a meta-analysis on controlled outcome evaluations of sexual offender treatment. From 2,039 documents published in five languages, 69 studies containing 80 independent comparisons
The Principles of Effective Correctional Treatment Also Apply To Sexual Offenders
The effectiveness of treatment for sexual offenders remains controversial, even though it is widely agreed that certain forms of human service interventions reduce the recidivism rates of general
The Effectiveness of Sexual Offender Treatment for Juveniles as Measured by Recidivism: A Meta-analysis
A comparison of odds ratios by quality of study design indicated that higher quality designs yielded better effect sizes, though the difference between groups was not significant, and individual study characteristics suggest that results should be interpreted with caution.
The Size and Sign of Treatment Effects in Sex Offender Therapy
It is concluded that the effectiveness of psychological treatment for sex offenders remains to be demonstrated and solutions are outlined that think will lead to progress in the field of sex offender treatment.
Current issues in the treatment of sexual offenders
This thesis investigates the debate around sex offender treatment efficacy. Numerous methods are utilised to explore this topic, including a meta-analysis (N =15,931), empirical research (N =322) and
Psychological Treatment of Sexual Offenders Against Children
A meta-analysis of the available research cannot establish any effect of treatment on sexual offenders against children (SOAC), and only a tiny fraction of studies meet a minimum of scientific standards.
The effects of specialized treatment on the recidivism of juvenile sex offenders: a systematic review and meta-analysis
ObjectivesSpecialized treatment programs for juvenile sex offenders (JSOs) are commonly used in juvenile justice systems. Despite their popularity, the evidence base for the effectiveness of these
A systematic review and meta-analysis on the effects of young offender treatment programs in Europe
ObjectivesTo examine the effectiveness of young offender rehabilitation programs in Europe as part of an international project on the transnational transfer of approaches to reducing
Sex offender treatment : an evaluation of the Stave Lake Correctional Centre program
Research on the efficacy of sex offender treatment is controversial. Though many studies have shown positive treatment effects, problems such as unequal comparison groups have made results difficult
Effects of a Relapse Prevention Program on Sexual Recidivism: Final Results From California's Sex Offender Treatment and Evaluation Project (SOTEP)
The results do not generally support the efficacy of the RP model, but suggest a number of ways in which this kind of treatment program can be improved.


The influence of treatment programmes on the recidivism of juvenile and adult offenders: An european meta-analytic review
Abstract Meta-analyses have examined the effectiveness of different treatment techniques on delin-quent and criminal behaviour in America and Europe. In one of the last meta-analyses, that integrated
Sexual offender recidivism revisited: a meta-analysis of recent treatment studies.
  • G. Hall
  • Psychology
    Journal of consulting and clinical psychology
  • 1995
A small, but robust, overall effect size was found for treatment versus comparison conditions and cognitive-behavioral and hormonal treatments were significantly more effective than behavioral treatments but were not significantly different from each other.
Outcome of an Institutional Sexual Offender Treatment Program: A Comparison Between Treated and Matched Untreated Offenders
Data from a sexual offender treatment program operated by the Correctional Service of Canada at the Regional Psychiatric Center (Saskatoon) supported the conclusion that cognitive behavioral
Sexual offender treatment efficacy revisited
  • M. Alexander
  • Psychology, Law
    Sexual abuse : a journal of research and treatment
  • 1999
The present analysis examines the issues from a slightly different perspective, using 79 sexual offender treatment outcome studies reviewed, encompassing 10,988 subjects, to identify patterns which can be examined later in more detail.
Treatment May Change Risk Prediction for Sexual Offenders
The best predictor of sexual offense recidivism is believed to be past sexual offending. However, clinical observations of treated individuals often contradict this view. Consequently, this
Effects of Cognitive-Behavioral Treatment on Sex Offender Recidivism
Preliminary results from a longitudinal study of the effectiveness of cognitive-behavioral treatment with sex offenders are presented. The study's research design includes three groups: a treatment
Evaluating treatment efficacy with sexual offenders: The insensitivity of recidivism studies to treatment effects
Treatment programs for sexual offenders have been implemented in prison settings with the objective of reducing recidivism among released offenders. Reviews of the literature evaluating the efficacy
Follow-up of Rapists Treated in a Forensic Psychiatric Hospital
Although nearly twice as many treatment noncompleters reoffended sexually, the difference between the two groups was not statistically significant and mean follow-up time was well over four years for both groups.
Predicting relapse: a meta-analysis of sexual offender recidivism studies.
The results suggest that applied risk assessments of sexual offenders should consider separately the offender's risk for sexual and nonsexual recidivism.