Forensic Psychology Flashcards
(132 cards)
Define the top down approach.
Profiler uses witness accounts and evidence to assign offender to one of two categories.
What are the 2 top down categories?
Organised offender.
Disorganised offender.
What are the crime scene characteristics of an organised offender?
Evidence of planning.
Signature ways of working - if repeat offender.
Little evidence left.
What are the likely characteristic of an organised offender?
Higher than average intelligence.
Married, possibly with children.
Socially and sexually competent.
What are the crime scene characteristics of a disorganised offender?
Leaves clues.
Noplanning.
Body still at scene.
What are the likely characteristics of a disorganised offender?
Lower than average intelligence.
Socially and sexually incompetent.
Live alone.
Many failed relationships.
Describe Canters study into the validity of the top down approach.
Analysis of data from 100 murders in USA.
Examined against 39 characteristics thought to be typical of either type.
What did the results of Canters study into the top down approach show?
A set of organised characteristics were found to be typical of most serial killers.
Disorganised characteristics were much rarer and did not occur often enough to be considered a type.
Why is the ability to only be applied to particular crimes a weakness of the top down approach?
This involves rape, murder, arson etc where crime scenes reveal important details about a suspect.
It cannot be applied to crimes such as burglary, destruction of property etc.
It is a limited approach to identifying criminals.
Explain why the classification of the top down approach is too simplistic.
Goodwin asked police investigators how they would classify someone with high IQ that committed a spontaneous crime.characteristics don’t objectively fit into either category.
Therefore approach may be too simplistic, and there may be more than 2 types of offender.
What is bottom up profiling?
Using the evidence to create a profile.
How is investigative psychology used in bottom up profiling?
Uses statistical analysis of data collected at crime scenes compared to a large data base.
Helps to suggest certain characteristics.
What are the 5 factors used to analyse a crime scenes?
Interpersonal coherence.
Time and place significance.
Criminal characteristics.
Criminal career.
Forensic awareness.
Explain interpersonal coherence.
How the person interacted with the victim is likely how they interact with all e.g. aggressive, shy etc.
Explain time and place significance.
Time - personal schedule.
Place - where they know well e.g. escape routes, busyness.
What is forensic awareness?
If they show evidence of knowledge of criminal justice system or use techniques to reduce evidence left.
Explain criminal career.
If they behave consistently when repeat offending or start to adapt methods due to experience.
What are criminal characteristics in investigative psychology?
How the characteristics compare to a large data base of previous crimes.
What is geographical profiling?
Assuming where an offender lives based off the locations of linked crimes.
What are the 2 types of geographical profiles?
Marauder.
Commuter.
Define marauder.
Those who commit crimes in their own neighbourhood - commonly within less than 2 miles.
Define commuter.
Those who travel to commit their crimes.
Describe the study by Lundrigan and Canter for geographical profiling.
Info from 120 murder cases.
Dispersion of body disposal sites usually creates a centre of gravity, where offenders usually based.
Most noticable for marauders.
How can the research into geographical processes be used to support the use of it?
Supports ideas that spatial information is key in determining characteristics.