Is it possible to reduce crime without exacerbating adversarial relationships between police and citizens? Community policing is a celebrated reform with that aim, which is now adopted on six continents. However, the evidence base is limited, studying reform components in isolation in a limited set of countries, and remaining largely silent on citizen-police trust. We designed six field experiments with Global South police agencies to study locally designed models of community policing using coordinated measures of crime and the attitudes and behaviors of citizens and police. In a preregistered meta-analysis, we found that these interventions led to mixed implementation, largely failed to improve citizen-police relations, and did not reduce crime. Societies may need to implement structural changes first for incremental police reforms such as community policing to succeed.

中文翻译：

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社区警务不会建立公民对警察的信任或减少全球南方的犯罪

是否有可能在不加剧警察和公民之间的敌对关系的情况下减少犯罪？社区警务是一项旨在实现这一目标的著名改革，现已在六大洲采用。然而，证据基础有限，在有限的一组国家中孤立地研究改革组成部分，对公民-警察信任基本上保持沉默。我们与全球南方警察机构设计了六个现场实验，以研究当地设计的社区警务模型，使用协调的犯罪措施以及公民和警察的态度和行为。在一项预先注册的荟萃分析中，我们发现这些干预措施导致混合实施，在很大程度上未能改善公民与警察的关系，也没有减少犯罪。