American Economic Journal: Applied Economics · 2025 · [{"name": "Roman Rivera", "affiliation": ["Princeton University"]}]
中文摘要
提高代表性不足群体在警察部门中的代表性，是减少激进警务的常见提议。本文利用抽签制度提供的队列构成外生变异，记录了芝加哥警察学院同伴构成对警员未来逮捕行为的影响。我发现，来自警务较不激进群体（如女性和年长警员）的同伴占比越高，会减少所有警员未来的低层级逮捕。同伴种族通过放大性别和年龄的效应而发挥作用。总体而言，结果最符合以下解释：同伴对较不激进警务的偏好改变了警员的偏好，并进而改变了其未来行为。（JEL H76, J15, J16, J45, J78, K42）
Abstract
Increasing underrepresented groups’ representation in police departments is a common proposal to reduce aggressive policing. This paper documents the effects of peer composition in the Chicago police academy on officers’ future arrests by exploiting the lottery system, which provides exogenous variation in cohort composition. I find that higher shares of peers from groups that police less aggressively, such as female and older officers, reduce all officers’ future low-level arrests. Peer race matters by amplifying the effects of gender and age. Overall, the results are most consistent with peers’ preferences for less aggressive policing shifting officers’ preferences and changing future behavior. (JEL H76, J15, J16, J45, J78, K42)