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1. OCR Psychology of Crime d) Offender profiling 2. d) Offender profiling FBI – top down <ul><li>Survey of __ cases…
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  • 1. OCR Psychology of Crime d) Offender profiling
  • 2. d) Offender profiling FBI – top down <ul><li>Survey of __ cases </li></ul><ul><li>Interviewed convicted serial offenders </li></ul><ul><li>Typology = ‘types’ </li></ul><ul><li>Later modified to 3 </li></ul>Crime scene data profile
  • 3. d) Offender profiling UK – bottom up <ul><li>See Canter case study </li></ul><ul><li>Criminal’s crime life like everyday life </li></ul><ul><li>Look at pattern of offences  </li></ul><ul><li>Find criminal! </li></ul><ul><li>Maybe suggest interview methods </li></ul><ul><li>Britton – details of victim’s psyche helps </li></ul>Crime scene data profile Continuities / changes
  • 4. d) Offender profiling case study <ul><li>Canter – Duffy </li></ul><ul><li>Continuities: near railways; confident with women </li></ul><ul><li>Changes: more aggressive; combed hair; </li></ul><ul><li>Profile: 17 points </li></ul><ul><li>Duffy 1505/2000  number one suspect </li></ul><ul><li>Duffy 13/17 points </li></ul>
  • 6. d) Offender profiling biases and pitfalls - Copson <ul><li>Copson </li></ul><ul><li>” coals to Newcastle” </li></ul>
  • 7. d) Offender profiling biases and pitfalls - Kocsis <ul><li>n= experienced detectives; rookies; chemistry undergrads </li></ul><ul><li>IV=background </li></ul><ul><li>applied system to solved cases </li></ul><ul><li>DV=profile accuracy </li></ul><ul><li>chemistry undergrads best; then rookies; then detectives! </li></ul>
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