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Modelling Property Offenders’ Spatial Behavior

Dr. Karen Shalev revisits the Circle Hypothesis through modelling offenders' spatial behavior using sketch maps. The study distinguishes between two extreme behavior types and acknowledges limitations in the data collection from police case files of convicted offenders. The interview structure includes a background questionnaire, timeline, sketch maps, and Q&A session.

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Modelling Property Offenders’ Spatial Behavior

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  1. The Circle Hypothesis Revisited:Modelling Property Offenders’ Spatial Behaviour Using Sketch Maps Dr Karen Shalev Lecturer University of Portsmouth Institute of Criminal Justice Studies karen.shalev@port.ac.uk * Acknowledgments to Prof. Canter for his supervision

  2. Circle Hypothesis (Canter & Larkin, 1993)

  3. Limitations of Model • Distinguishes between two extreme types of behaviour • Information is gathered from police case file • Only convicted offenders • Official address may not be accurate • Sample bias • Use of two furthest crimes as indicator of criminal range • Generalise about series from two offences • All remaining crimes are being ignored • Offenders would have to make use of full circle

  4. Source of Data • Prisons in North West • Wirral Probation Service

  5. Structure of Interview • Background Questionnaire • Timeline • Sketch Maps • Questions and Answers

  6. Marauder

  7. Fringer

  8. Cluster

  9. Commuter

  10. Thank You Any Questions?

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