OBJECTIVE The purpose of this study was to estimate the behavioral impacts of training police officers in implicit bias awareness and management. HYPOTHESES Training police in implicit bias reduces racial and ethnic disparities in stops, arrests, summonses, frisks, searches, and/or use of force. METHOD A cluster randomized controlled trial using the stepped wedge design was applied to 14,471 officers in the New York City Police Department, with a 1-day training delivered to clusters of police commands between May 2018 and April 2019 and outcomes measured with police records of individual events from April 2018 to May 2019. Police records were supplemented with survey data on 1,973 officers matched to administrative data. For each type of enforcement action, the likelihood that the action involved or was taken against Black or Hispanic suspects, respectively, relative to White suspects was estimated, controlling for potential confounders. Additional analysis allowed for estimating training effects of different magnitudes for Black, Hispanic, and White officers and for officers with greater motivation to act without prejudice or greater concern about discrimination. RESULTS None of the estimated training effects achieved statistical significance at the .05 level. CONCLUSIONS Isolated and weak evidence of behavioral impacts of the training was detected. Several explanations for the null findings are considered. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

中文翻译：

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对警察的隐性偏见培训：评估对执法差异的影响。


目的 本研究的目的是评估对警察进行隐性偏见意识和管理培训的行为影响。假设 对警察进行隐性偏见培训可以减少拦截、逮捕、传票、搜身、搜查和/或使用武力方面的种族和民族差异。方法 采用阶梯楔形设计的整群随机对照试验适用于纽约市警察局的 14,471 名警官，在 2018 年 5 月至 2019 年 4 月期间对警察指挥群进行了为期 1 天的培训，并根据个人的警察记录衡量结果2018 年 4 月至 2019 年 5 月的事件。警方记录补充了 1,973 名警官的调查数据，这些数据与行政数据相匹配。对于每种类型的执法行动，相对于白人嫌疑人，分别估计了涉及或针对黑人或西班牙裔嫌疑人采取行动的可能性，并控制了潜在的混杂因素。额外的分析可以估计黑人、西班牙裔和白人警官以及在不带偏见或更担心歧视的情况下采取行动的更大动力的警官的不同程度的培训效果。结果 估计的训练效果均未达到 0.05 水平的统计显着性。结论 检测到了培训行为影响的孤立且微弱的证据。考虑了对无效结果的几种解释。 （PsycInfo 数据库记录 (c) 2024 APA，保留所有权利）。