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The Circle Hypothesis Revisited: Modelling Property Offenders’ Spatial Behaviour Using Sketch Maps

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.

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The Circle Hypothesis Revisited: Modelling Property Offenders’ Spatial Behaviour Using Sketch Maps

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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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