Criminology Commons^™

Private Security And Cctv Surveillance: A Systematic Review Of Function And Performance, Brandon C. Welsh, Eric L. Piza, Amanda L. Thomas, David P. Farrington

Publications and Research

Private security personnel play an important but largely overlooked role in the operation of 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.

Cctv Surveillance For Crime Prevention. A 40-Year Systematic Review With Meta-Analysis, Eric L. Piza, Brandon C. Welsh, David P. Farrington, Amanda L. Thomas

Publications and Research

Research Summary: We report on the findings of an updated systematic review and meta-analysis of the effects of closed-circuit television (CCTV) surveillance cameras on crime. The findings show that CCTV is associated with a significant and modest decrease in crime. The largest and most consistent effects of CCTV were observed in car parks. The results of the analysis also demonstrated evidence of significant crime reductions within other settings, particularly residential areas. CCTV schemes incorporating activemonitoring generated larger effect sizes than did passive systems. Schemes deploying multiple interventions alongside CCTV generated larger effect sizes than did schemes deploying single or no …

The Crime Prevention Effect Of Cctv In Public Places: A Propensity Score Analysis, Eric L. Piza

Publications and Research

This study measures the effect of CCTV in Newark, NJ across three separate crime categories: auto theft, theft from auto, and violent crime. CCTV viewsheds, denoting camera line-of-sight, were units of analysis. Viewsheds for treatment units were created by digitizing live CCTV footage within a geographic information system (GIS). Control viewsheds were created with GIS tools and aerial imagery from Google maps. Treatment cases were matched with control cases via propensity score matching (PSM) to ensure statistical equivalency between groups. Effect was measured via odds ratios and average treatment on the treated statistics. Findings offer modest support for CCTV as …

The Effects Of Merging Proactive Cctv Monitoring With Directed Police Patrol: A Randomized Controlled Trial., Eric L. Piza, Joel M. Caplan, Leslie W. Kennedy, Andrew M. Gilchrist

Publications and Research

Objectives: This study was designed to test the effect of increased certainty of punishment on reported crime levels in CCTV target areas of Newark, NJ. The experimental strategy was designed for the purpose of overcoming specific surveillance barriers that minimize the effectiveness of CCTV, namely high camera-to-operator ratios and the differential response policy of police dispatch. An additional camera operator was deployed to monitor specific CCTV cameras, with two patrol cars dedicated to exclusively responding to incidents of concern detected on the experimental cameras.

Methods: A randomized controlled trial was implemented in the analysis. A randomized block design was used …