Still HOPEful

Reconsidering a "Failed" Replication of a Swift, Certain, and Fair Approach to Reducing Substance Use Among Individuals Under Criminal Justice Supervision

Published in: Addiction (2020). doi:10.1111/add.15049

Posted on RAND.org on May 07, 2020

by Keith Humphreys, Beau Kilmer

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A high-profile multi-site clinical trial of a probation model using contingency management principles was widely seen as proving the model’s ineffectiveness. But site differences suggest that some outcomes varied by implementation success. Further, although the main article in Criminology and Public Policy included the largely negative pre-registered outcomes, it did not include the pre-registered substance use outcome, which was significantly improved. The trial thus supports a more encouraging conclusion than is commonly believed.

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