intuitive application of a profiler's prior knowledge
who developed the six main stages of the top down approach?
Douglas et al
what are the six main stages of the top down approach?
profiling inputs
decision process models
crime assessment
criminal profile
crime assessment
apprehension
Police Do Catch Cunning Criminals All the time
state a brief description of each of the six stages of offender profiling
initial data collected eg- description of the crime scene. No info ignored even if trivial.
organising data into meaningful patterns-murder type, time and location factors
classified as organised/disorganised
hypotheses about likely background/habits. Used to work out a strategy to catch offender
written report given to investigation agency and people matching profile are evaluated
suspect apprehended, profile making process reviewed to check legitimate conclusions
what is an organised offender?
when the crime is planned and the victim is targeted, offender is high in intelligence and socially competent
what is a disorganised offender?
unplanned crimes, little engagement with victim, offender has low intelligence and social competence. Crime scene likely to contain many clues.
in what stage is an offender classified as organised/disorganised?
during the first stage of crime assessment
evaluation of the top down approach?
☹️not based on any scientific theory- requires intuitive application of profiler's prior knowledge, Barnum effect- ambiguous descriptions made to suit any situation
😊useful- Copson questioned 182 police officers, 82% said useful, over 90% would use again
☹️basis of the method is flawed-organised/disorganised classification based on interviews with dangerous offenders- not reliable source of info
☹️not two distinct categories- David Canter et al analysed 39 murder cases- Subsets of organised types, little evidence of disorganised ones, no clarity.