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  5. Peer Effects in Police Use of Force

Peer Effects in Police Use of Force

Abstract

We study the link between police officers’ on-duty injuries and their peers’ force-use using a network of officers who attended the police academy together through a random lottery. On-duty injuries increase the probability of officers using force by 7% in the subsequent week. Officers are also more likely to injure suspects and receive complaints about neglecting victims and violating constitutional rights. The effect is concentrated in a narrow time window following the event and is not associated with significantly lower injury risk to the officer. Together, these findings suggest that emotional responses drive the effects rather than social learning.

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