Offender Profiling Flashcards
What is offender profiling?
-behavioural + analytical tool that is intended to help investigators accurately predict the characteristics of unknown offenders
What is the top-down approach?
-profilers start with a pre-established typology and work down to lower levels in order to assign offenders to one of 2 categories based on evidence
What is an organised offender?
-shows evidence of having planned the crime in advance
What is disorganised offender?
-shows little evidence of planning
What are the key characteristics of an organised offender?
-has a ‘type’ of victim
-maintains high degree of control
-little or no clues left
-above average IQ
-professional qualification
What are the key characteristics of a disorganised offender?
-shows little evidence of planning
-may be spontaneous act
-scene reflects impulsive nature of attack
-lower than average IQ
-unskilled or unemployed
-history of failed relationship
What are the 4 parts to an FBI profile?
- data assimilation
- crime scene classification
- crime reconstruction
- profile generation
What is supporting evidence to the top down approach?
-works best with certain types of crimes
-eg. rape, arson, dissection of bodies or cult killings
What is a criticism of the top down approach?
-Alison
-typology classification system is based on assumption that offenders patterns and behaviours haven’t changed
-it is based on static models of personality
-poor validity when it comes to identifying possible suspects and for trying to predict their next move
What is a limitation of the top down approach?
-evidence doesn’t support the ‘disorganised offender’
-Godwin - asks how police investigators would classify a killer with high IQ + sexual competence who commits a spontaneous murder where the victims body is left at scene
-has caused others to create a more detailed typological models
-Holmes suggest there are 4 types of serial killers
What is the bottom up approach?
-profilers work up from evidence collected to develop hypotheses about the likely characteristics of the offender
What is investigative psychology?
-matches details from the crime scene with statistical analysis of typical offender behaviour patterns
How is investigative psychology helpful?
-can establish patterns of behaviour likely to occur
-develop a statistical database = allows comparison
-can determine if a series of offences are linked
What are the 3 parts to investigative psychology?
- interpersonal coherence
- significance of time and place
- forensic awareness
What is interpersonal coherence?
-way an offender behaves at the scene, may reflect everyday behaviour