offender profiling : the bottom-up approach Flashcards
the british approach
-david canter
-generate a profile from only the available evidence
investigative psychology
use statistical procedures to create a prediction of behaviour
interpersonal coherence
how the offender acts during the crime relates to how they act in non-criminal situations (scene is neat - the offender is neat in everyday life)
forensic awareness
attempted to cover up their tracks - may have been questioned before
geographical profiling pt 1
-what offender are thinking, how they operate or where they live (centre of gravity)
-where they are next likely to commit a crime (jeopardy surface)
geographical profiling pt 2 - circle theory
the marauder - operates near home
the commuter - travels away from home
strength - evidence for investigative psychology
canter (1990) - analysis of 66 sexual assault cases
-each had the same characteristic (speaking to the victim like they are a thing)
-criminal behaviour is consistent proving the theory is valid and reliable
strength - support for geographical profiling
canter (2001) - 120 murder cases with serial killers
-disposed of bodies in different locations which formed centres of gravity and their base was always in the middle of this
-helps determine killers’ base
weakness - geographical profiling is not always sufficient on its own
-crimes recorded differently between police departments (75% of crimes go unreported)
-the quality of prior evidence hinders investigative psychology (lacks usefulness)
-Ainsworth said geographical information is not enough to identify the offender