Private security personnel play an important but largely overlooked role in the operation of closed-circuit television (CCTV) surveillance to prevent crime in public and private areas. This role can take a number of forms, including active monitoring of cameras. Drawing upon a global database of CCTV evaluations (N = 165), this article examines the function and performance of private security personnel as related to the effectiveness of CCTV. Findings indicate that CCTV schemes operated by private security personnel generated larger crime prevention effects than those operated by police or those using a mix of police and security personnel. Policy and research implications are discussed.

中文翻译：

---

私人保安和闭路电视 (CCTV) 监视：功能和性能的系统审查

私人保安人员在闭路电视 (CCTV) 监控以防止公共和私人区域的犯罪活动中发挥着重要但在很大程度上被忽视的作用。该角色可以采取多种形式，包括主动监控摄像机。本文利用闭路电视评估的全球数据库（N = 165），研究了与闭路电视有效性相关的私人保安人员的职能和表现。调查结果表明，由私人保安人员操作的闭路电视系统比警察或警察和保安人员混合使用的系统产生更大的犯罪预防效果。讨论了政策和研究影响。