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17 Cards in this Set
- Front
- Back
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What is investigative psychology?
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Study of offenders and the process of bringing them to justice Deals with those involved in the crime Criminal investigation and legal process |
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Purpose of offender profiling
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Suggest the type of person (s) Narrow down search Prioritise suspects Assess the potential for crime seriousness and frequency |
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Principles of Offender Profiling
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People influence the action of others A crime scene reflects a persons characteristics and personality Human behaviour develops over time and may change due to personal experience Most behaviours satisfy needs + desires |
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Name 3 crimes suitable for Offender Profiling
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Rape, Ritualistic murder, torture, murder
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FBI Approach- name 2 types of offences
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Organised (planned, controlled, targeted) Unorganised ( unplanned, uncontrolled, not targeted) |
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Characteristics of an Organised Offender
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High IQ Socially capable Controlled lifestyle Charismatic |
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Characteristics of an Unorganised Offender
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Chaotic Lifestyle Socially incapable Single Low IQ Poor Relations |
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Characteristics of an Unorganised Crime Scene
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Untargeted Body not hidden Sloppy Lots of evidence/ witnesses Spontaneous |
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Characteristics of an organised Crime Scene
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Planned Restraints used Body hidden Little evidence Controlled enviro |
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Evaluation of FBI approach
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Rarely find the actual suspect- but only narrows down the search Argument between subjectivity and objectivity Based upon little research Often difficult to ID person or crime scene |
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Stages of FBI approach
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Data assimilation Crime scene classification Crime reconstruction Offender Profile |
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Statistical Approaches - David Canter
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Study of Behaviour + actions of a large number of offences Generate theory of offender actions + how characteristics relate to it Statistical analysis of a database to draw conclusion DB of a large number of separate offences 1= Present, 0 = Absent |
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Smallest Space Analysis (SSA)
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Plots relate on (usually) 2 dimensional plots Closer the points together the greater the similarity in characteristics Each dot represents 1 offence |
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SSA positives
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Theory Driven Has figures Reliable statistical technique |
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SSA negatives
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Conclusions are only as good as the database Stats still required some interpretation Subjectivity of the closeness of the points |
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Canters Circle Hypothesis
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Circle drawn that encompasses all series of offences Offender likely to live in the circle e.g probably near the first offence |
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Canters Circle Hyp- the negatives
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Need 1+ offenceSize of circle a limiting factor
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