Objectives

We test the impact of de-escalation training on the behavior of officers in the Tempe (AZ) Police Department.

Methods

The training was delivered via a squad-based randomized controlled trial. We examine administrative use of force data and body-worn camera footage for all use of force encounters six months pre- and post-training. Outcomes include prevalence and force types used, encounter duration, and citizen and officer injuries.

Outcomes

Use of force declined for Treatment and Control squads, likely because of the global pandemic. Trained officers decreased use of certain force types likely to produce injury. Trained officers spent significantly more time on scene, and they were 58% less likely to injure community members. These changes occurred with no increased risk of officer injury.

Conclusions

The differences in key outcomes are consistent with a positive training effect. Factors that may explain the results include the curriculum development process, focus on officer safety/wellness, officer receptivity, and use of refresher trainings.

中文翻译：

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警察降级培训能否在不损害警员安全的情况下减少武力使用和公民伤害？

目标

我们测试了降级培训对坦佩（亚利桑那州）警察局警员行为的影响。

方法

培训是通过基于小队的随机对照试验进行的。我们检查了培训前后六个月所有使用武力遭遇的行政使用武力数据和随身摄像机镜头。结果包括发生率和使用的武力类型、遭遇持续时间以及公民和官员受伤情况。

结果

治疗和控制小组的武力使用量有所下降，这可能是由于全球大流行的缘故。训练有素的警官减少使用某些可能造成伤害的武力类型。训练有素的警官在现场花费的时间明显更多，并且他们伤害社区成员的可能性降低了 58%。这些变化的发生并没有增加警员受伤的风险。

结论

主要结果的差异与积极的培训效果是一致的。可能解释结果的因素包括课程开发过程、对官员安全/健康的关注、官员的接受能力以及进修培训的使用。