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                            Library & Multimedia
 What Does Gunshot Detection Technology Tell Us About Gun Violence
NCJ Number
              255253
Journal

*Applied Geography* Volume: 86 Dated: 2017 Pages: 262-273
Author(s)
          Yasemin Irvin-Erickson;
                        Nancy La Vigne;
                        Ned Levine;
                        Emily Tiry;
                        Samuel Bieler
Date Published

2017
Length
              12 pages
Annotation
              This study assessed the sensitivity of Gunshot Detection Technology (GDT) relative to Calls for Service.
Abstract
              Existing crime data sources have biases that do not present a complete picture of gun-related crime. GDT may provide a new metric for firearm crimes; however, few studies have assessed the accuracy of GDT and its relationship to other measures of violence. GDT and gun crime-related Calls for Service in Washington, DC during 2010 were studied. Using temporal comparisons for month, day of year, weekday, and hour of the day, spatial comparisons on a quarter-mile square grid, and a Poisson-Lognormal-CAR spatial regression model on a combined grid by time period dataset, this study examined the sensitivity of GDT activations relative to gunshot-related calls for service. The results showed that relative GDT sensitivity changed by time and by space. In particular, the relative sensitivity of GDT was much stronger in the evening and at nighttime than in the daytime. In terms of spatial variation, the study found that GDT sensitivity decreased with distance from the nearest zone centroid. In addition, there were two small geographic areas in the study area in which the relative GDT sensitivity was lower than expected. GDT systems identify the frequency and locational accuracy of gunshot incidents, particularly at nighttime. This technology has the potential to improve data collection on gun use and violence and produce more accurate representations if the temporal and distance limitations of the technology are understood. GDT may improve gun detection and, thereby, improve police operations and public support for police. (publisher abstract modified)
      
  
          Additional Details
Grant Number(s)
        2012-R2-CX-0001


  
  
        
  Agencies
        NIJ-Sponsored


  
  
        
  Publication Type
        Research (Applied/Empirical)
                                Report (Study/Research)
                                Report (Grant Sponsored)
                                Program/Project Description


  
  
        
  Award
        Analyzing Crime Patterns and Trends in the Washington, DC Metropolitan Area: Documenting the Value of Cross-Agency and Cross-Jurisdictional Data Integration
    
  
  
Date Published: January 1, 2017
    
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      PatentsRelated Topics
        
                Crime analysis
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        Geographic distribution of crime
        Gunshots
        Gun violence



  
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