This study investigated the economics of multisystemic therapy for problem sexual behaviors (MST-PSB), a family-based treatment that has shown promise with juvenile sexual offenders. We evaluated the cost and benefits of MST-PSB versus usual community services using arrest data obtained in an 8.9-year follow-up from a randomized clinical trial with 48 juvenile sexual offenders, who averaged 22.9 years of age at follow-up (Borduin, Schaeffer, & Heiblum, 2009). The net benefit of MST-PSB over usual community services was calculated in terms of (a) the value to taxpayers, which was based on measures of criminal justice system expenses (e.g., police and sheriff's offices, court processing, community supervision); and (b) the value to crime victims, which was based on measures of both tangible (e.g., property damage and loss, health care, lost productivity) and intangible (e.g., pain, suffering, reduced quality of life) losses. Lower rates of posttreatment arrests in the MST-PSB versus usual community services conditions were associated with lasting reductions in expenses for both taxpayers and crime victims, with an estimated total benefit of $343,455 per MST-PSB participant. Stated differently, every dollar spent on MST-PSB recovered $48.81 in savings to taxpayers and crime victims over the 8.9-year follow-up. These findings demonstrate that a family-based treatment such as MST-PSB can produce lasting economic benefits with juvenile sexual offenders. Policymakers and public service agencies should consider these findings when making decisions about interventions for this challenging clinical population.
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