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

R. Karl Hanson, Andrew J.R. Harris, Arthur Gordon, Janice K. Marques, William Murphy, Vernon L. Quinsey, Michael C. Seto

Research output: Contribution to journalArticle

595 Citations (Scopus)

Abstract

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, un-weighted 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 treatments (cognitive-behavioral, k = 13; systemic, k = 2) were associated with reductions in both sexual recidivism (from 17.4 to 9.9%) and general recidivism (from 51 to 32%). Older forms of treatment (operating prior to 1980) appeared to have little effect. Future directions for improving the quality of sex offender treatment outcome evaluations are discussed.

Original languageEnglish (US)
Pages (from-to)169-194
Number of pages26
JournalSexual Abuse: A Journal of Research and Treatment
Volume14
Issue number2
DOIs
StatePublished - Jan 1 2002

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Psychology
Therapeutics
Direction compound

All Science Journal Classification (ASJC) codes

  • Psychology(all)
  • Psychiatry and Mental health

Cite this

First Report of the Collaborative Outcome Data Project on the Effectiveness of Psychological Treatment for Sex Offenders. / Hanson, R. Karl; Harris, Andrew J.R.; Gordon, Arthur; Marques, Janice K.; Murphy, William; Quinsey, Vernon L.; Seto, Michael C.

In: Sexual Abuse: A Journal of Research and Treatment, Vol. 14, No. 2, 01.01.2002, p. 169-194.

Research output: Contribution to journalArticle

Hanson, R. Karl ; Harris, Andrew J.R. ; Gordon, Arthur ; Marques, Janice K. ; Murphy, William ; Quinsey, Vernon L. ; Seto, Michael C. / First Report of the Collaborative Outcome Data Project on the Effectiveness of Psychological Treatment for Sex Offenders. In: Sexual Abuse: A Journal of Research and Treatment. 2002 ; Vol. 14, No. 2. pp. 169-194.
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