Evidence Brief: Correctional Alcohol and Drug Treatment [pdf, 288 KB]
...delivery. The effect of psychological treatment on reoffending is typically modest. For the best- performing psychological treatments that are delivered to a moderate-risk group, such as a typical group of prisoners, for every 10-20 people put through treatment we would expect to prevent one instance of general reoffending. Reviews of the evidence for pharmacological treatment have often found them to have a larger effect on reoffending than psychological treatment. This co...