A meta-analysis examining staff and program variables as predictors of treatment effectiveness. Clinical Psychology Review, 73. doi:10.1016/j.cpr.2019.101752.
The analysis looks at domestic violence, general violence and sexual offences. Across all programs, offense specific recidivism was 13.4% for treated individuals and 19.4% for untreated comparisons over an average follow up of 66.1 months. Relative reductions in offense specific recidivism were 32.6% for sexual offense programs, 36.0% for domestic violence programs, and 24.3% for general violence programs. The meta-analysis is the most exhaustive to date that examines the effects of specialized psychological treatments for sexual offending, including 11 new studies since Schmucker and Lösel’s (2015) original searches in 2010. The sexual recidivism reductions that we found for these programs were higher than, or at the top end of, those reported in previous meta-analyses.