Between 2015 and 2018, New York City adopted “neighborhood policing,” an expansive policy to encourage interactions between police officers and community members. Among other changes, the initiative established hundreds of new “neighborhood-coordination” officers and gave “steady-sector” officers time away from 911 response to dedicate to resident interactions. This study evaluates the initiative’s effects on crime, complaints of police misconduct, racial disparities, and arrests. Using monthly data on New York City’s 76 police precincts between 2006 and 2019, we estimate the policy’s causal effect using high-dimensional time series models. This approach accounts for the policy’s staggered adoption, addresses potential correlation among outcomes and between precincts, and controls for unobserved precinct characteristics. We find neighborhood policing reduced misdemeanor and proactive arrests, especially in higher-poverty precincts outside of Manhattan, though it did not change the racial disparities of such arrests. The policy did not affect crime. It briefly increased complaints against police.

2015 年至 2018 年间，纽约市采用了“社区警务”，这是一项鼓励警察与社区成员互动的广泛政策。除其他变化外，该倡议建立了数百名新的“社区协调”官员，并让“稳定部门”官员有时间远离 911 响应，专注于居民互动。这项研究评估了该倡议对犯罪、警察不当行为投诉、种族差异和逮捕的影响。我们使用 2006 年至 2019 年间纽约市 76 个警察局的月度数据，使用高维时间序列模型估计政策的因果效应。这种方法解释了政策的交错采用，解决了结果之间和区域之间的潜在相关性，并控制了未观察到的区域特征。我们发现社区治安减少了轻罪和主动逮捕，尤其是在曼哈顿以外的贫困地区，尽管它并没有改变此类逮捕的种族差异。该政策对犯罪没有影响。它短暂地增加了对警察的投诉。