Do fair procedures matter? The effect of procedural justice on spouse assault

In a reanalysis of the Milwaukee Domestic Violence Experiment, we examine whether the use of fair procedures on the part of police officers called to the scene of a domestic assault inhibits subsequent assault. Consistent with expectations, we found that procedural justice did suppress subsequent violence, even in the face of adverse outcomes. When police acted in a procedurally fair manner when arresting assault suspects, the rate of subsequent domestic violence was significantly lower than when they did not. Moreover, suspects who were arrested and perceived that they were treated in a procedurally fair manner had subsequent assault rates that were as low as those suspects given a more favorable outcome (warned and then released without arrest). The suppression effect of procedural justice did not depend on the personal characteristics of suspects.