FBI offender profiling

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  • FBI Approach
    • Underlying Assumption
      • Crime scene can be used like a finger print to find murderer
      • Crime scenes are described as organised or disorganised (RESSLER)
    • Organised Offenders
      • Orderly life
      • Average to high IQ
      • Socially & Sexually competent
      • Employed
      • Critical event triggers 1st killing
      • Mobile (Possibly has a car)
      • Lives with partner
      • Follows crime in media
      • Verbal approach used
    • Disorganised Offenders
      • Average to low IQ
      • Socially Incompetent
      • Lives alone
      • Irregular worker
      • Low interest in crime in the media
    • Organised Crime Scene
      • Evidence of planning & control
      • Use of restraints
      • Weapon brought to scene
      • Body Hidden
      • Weapon & Evidence absent
    • Disorganised Crime Scene
      • Passion driven crime
      • No pre-planning
      • Sloppy crime scene
      • Murder weapon left @ scene
      • Evidence of sex after death
      • Blood, semen, prints etc left at scene
    • Douglas
      • 3rd offender type that does not fit in either category
    • Creation of Typologies
      • Typologies were not tested!
      • Opportunity sample of 36 murderers including Ted Bundy
      • Unstructured interview
    • 4 Stages
      • 1.Data Assimilation= Taking data from police reports, crime scene photos & pathology
        • 2.Crime Scene Classification= Classifying crime scene as organised or disorganised
          • 3.Crime Reconstruct-ion= Formulate hypothesis based on victims behaviour & crime scene
            • 4.Profile Generation= Present hypothesis regarding demographics, physical characteristics & behavioural habits
    • Evaluation
      • Intuition of profiler is subjective
      • Alison & Barrett
        • Out of date theories of personality
        • Incorrect beliefs about consistency of human behaviour
        • Incorrect beliefs that human individuals can be classified into discrete types


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