Objectives

The study examined the effects of awareness and notification of body-worn cameras (BWCs) on encounter-based citizen perceptions including procedural justice, police lawfulness, compliance with police, and global-level perceptions including police legitimacy, cooperation, and compliance with law.

Methods

A vignette-based cluster randomized controlled trial was conducted. As a cluster, participants were randomly selected and then randomly assigned to one of the four conditions (non-BWC, unawareness of BWC, awareness of BWC, and notification of BWC). Participants in the experimental conditions (i.e., unawareness of BWC, awareness of BWC, and notification of BWC) viewed a video of a real traffic stop in which the officer used a BWC. The data were obtained from a survey about participants’ perceptions. A one-way ANOVA test for bivariate analysis and a hierarchical generalized linear model for multivariate analysis were conducted.

Results

Compared with the control condition, the three experimental conditions significantly improved encounter-based citizen perceptions. Compared with unawareness of BWC, notification of BWC significantly improved the perceptions of procedural justice and police lawfulness, while awareness of BWC significantly improved the perceptions of police lawfulness.

Conclusions

BWC awareness improves citizen encounter-based perceptions. Police should notify citizens of the use of BWCs to increase the effectiveness of BWCs.

中文翻译：

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随身携带相机的意识和通知对程序正义、警察合法性、合作和合规性的影响：随机对照试验的结果

目标

该研究检查了佩戴式摄像机 (BWC) 的意识和通知对基于遭遇的公民认知的影响，包括程序正义、警察合法性、警察合规性以及全球层面的认知，包括警察合法性、合作和遵守法律。

方法

进行了基于小插图的集群随机对照试验。作为一个集群，参与者被随机选择，然后随机分配到四种情况之一（非 BWC、不了解 BWC、了解 BWC 和通知 BWC）。实验条件下的参与者（即不知道 BWC、知道 BWC 和通知 BWC）观看了一个真实交通站点的视频，其中官员使用了 BWC。这些数据是从一项关于参与者看法的调查中获得的。进行了双变量分析的单向方差分析和多变量分析的分层广义线性模型。

结果

与控制条件相比，三个实验条件显着提高了基于遭遇的公民感知。与不了解《生物武器公约》相比，了解《生物武器公约》显着提高了对程序正义和警察合法性的感知，而对《生物武器公约》的认识显着提高了对警察合法性的感知。

结论

BWC 意识提高了公民基于遭遇的感知。警方应将生物武器的使用通知公民，以提高生物武器的有效性。