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Geometry of Offending and Victimization

NCJ Number
Canadian Journal of Criminology and Criminal Justice Volume: 54 Issue: 4 Dated: October 2012 Pages: 495-510
Martin A. Andresen; Marcus Felson; Richard Frank
Date Published
October 2012
16 pages
This study examined the relationship between increasing the number of offenders/victims, by crime classification, on the area covered by crime.
The crime mobility triangle summarizes the spatial divergence of three locations: the offender's residence, the victim's residence, and the location of the delinquent act itself. The further these three locations are from one another, the greater the area covered by the mobility triangle. The original mobility triangle was not designed for cases with multiple offenders or multiple victims. Accordingly, the current paper defines the crime mobility polygon for such a crime and its corresponding area. The authors calculated the areas contained within mobility polygons for 26,476 index crime incidents. These calculations demonstrate the influence of extra-crime participants upon the area an incident covers. The authors found that not all crime classifications have substantial increases in their mobility area as the number of individuals increase. (Published Abstract)