Duluth versus cognitive behavioral therapy: A natural field experiment on intimate partner violence diversion programs.

We used data from a 3-year natural field experiment to study rates of recidivism in 2 types of diversion programs designed to reduce intimate partner violence (IPV) among heterosexual partners. In one program (Duluth), efforts are focused on protecting women from male aggression through a psychoeducational program, regardless of the offender's sex. In the other program (cognitive behavioral therapy [CBT]), efforts are focused on improving intrahousehold behaviors and communication skills through counseling. Our experimental results found that the IPV recidivism rate, measured as reconvictions for IPV, was 11 percentage points higher for offenders randomly assigned to a Duluth treatment program (14 percentage points higher among males). This outcome is statistically and practically significant, suggesting that the Duluth approach corresponds to meaningfully higher recidivism rates compared with CBT. In an attempt to explain the observed difference of IPV recidivism between these programs, we discuss theories for plausible psychological, sociological, psychophysiological, and neurological mechanisms responsible for this outcome. (PsycInfo Database Record (c) 2020 APA, all rights reserved).