5.1. Top Down Profiling Flashcards
What is the aim of top down profiling?
To narrow down a list of suspects to find the perpetrator
What is the top down approach?
- American approach to profiling
- Uses a classification system, then a behavioural analysis is conducted based on the crime scenes and interviews with the witness/ victim
- It’s a best fit model
- Based on the idea we will have signature ways of working
Who was the top down approach created by?
the FBI
What is the top down approach also known as?
Typology
What are the 4 stages of the top down approach?
- Assimilation
- Crime scene categories
- Crime reconstruction
- Profile created
What is assimilation?
Data from crime scene reviewed (pathology report, all evidence, weapon interviews)
What are crime scene categories?
Developed from interviews from 36 sexually motivated murders and their crime scene data
- Organised: C.S. Evidence of planning, use of restraint, victim is a stranger, body hidden
Personality: socially and sexually competent, skilled employed, increased IQ, live with partner- Disorganised: C.S. No evidence of planning, blood/ semen/ weapon left, no restraint, body in view Personality: decreased IQ, sexually and socially incompetent, lives alone
What is crime reconstruction?
Hypothesis about behaviour and events of crime created
What is profile created?
Background + physical characteristics of perpetrator written up and given to police
Strength: 36 sexually motivated offenders interviewed
- This was considered, along with characteristics from the crime scene to develop the classification system
- High ecological validity
- But only based on 36 (small sample)
- Sexually motivated (not all crimes are sexually motivated -> can’t generalise
- Caught offenders -> self report -> can lie to protect police as revenge, or hold back info so don’t get further prosecutions
- Interviews were standardised qs = reduces reliability
Strength: Canter
- 100 serial killers were analysed using smallest space analysis to analyse 39 occurrences of serial killings
- Found it matched the FBI’s typology = valid
Strength: Meketa
- Method can now be applied to burglary
- This led to a 857 increase in solved crimes
- More useful than originally devised to be used for
- Burglary in a greater % if crime stats
Weakness: Goodwin
- Serial killers have contrasting characteristics
- They don’t just fit one categorisation -> a continuum would be better
Weakness: consistency:
- Based on behaviour being consistent, but we are driven by the situation
- This could lead to incorrect identification
- Caution from profiling must be taken