Forensic Psychology Flashcards
What is offender profiling?
An investigative tool employed by the police when solving crimes, the main aim of which is to narrow the list of likely suspects.
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 two categories, based on witness accounts and evidence from the crime scene.
What are the two categories of offenders?
Organised and disorganised.
What is an organised offender?
An offender who shows evidence of planning, targets a specific victim and tends to be socially and sexually competent with higher-than-average intelligence.
What is a disorganised offender?
An offender who shows little evidence of planning, leaves clues and tends to be socially and sexually incompetent with lower-than-average intelligence.
Where did the top down approach originate?
Originated in the US, as a result of work carried out by the FBI.
FBI drew upon data gathered from in-depth interviews with 36 sexually motivated murders including Ted Bundy and Charles Manson.
Why is it actually called the top down approach?
Because it starts at the top (the actual crime e.g murder) and works down through the crime scene to decide on a category that fits the offender best.
What are the four main stages of the FBI top down profiling?
1-Data Assimilation
2-Crime Scene Classification
3- Crime reconstruction
4- Profile generation.
What happens during data assimilation?
The profiler reviews the evidence (crime scene photographs/pathology, reports).
What happens during crime scene classification?
As either organised or disorganised.
What happens during crime reconstruction?
Hypotheses in terms of sequence of events, behaviour of the victim, etc.
What happens during profile generation?
Hypotheses related to the likely offender, e.g demographic background, physical characteristics, behaviour etc.
What piece of research supported there being a distinct organised category of offender?
David Canter 2004: conducted an analysis of 100 US murders each committed by a different serial killer. Used smallest space analysis.
It appears there is a subset of features of many serial killing which matched the FBI’s typology for organised offenders.
What is an issue with the organised and disorganised typology?
Maurice Godwin (2002) argues many crimes can be classified as both organised and disorganised and that they are not mutually exclusive.
What is a strength of the top down approach in regards to crime application?
Critics argued it only applies to a number of crimes e.g sexually motivated murders. However, Meketa reports that is has now been applied to burglary leading to an 85% rise in solved cases in three US states.
Why has there been limitations regarding the sample used for which the top down typology is based upon?
Developed using interviews of 36 murders, 25 of which were serial killers and 11 being single or double killings. Argued that the sample is poor due to being small and also not being randomly selected.
What is offender profiling?
A behavioural and analytical tool that is intended to help investigations accurately predict and profile the characteristics of unknown offenders.
What is the bottom up approach?
Profilers work up from evidence collected from the crime scene to develop hypotheses about the likely characteristics, motivations and social background of the offender.
How does bottom up profiling differ from top down offender profiling?
Top down is based on typologies whereas the bottom up is data driven and emerges as the investigator engages in more deeper scrutiny of the research.
What are the two methods used by the bottom-up approach?
Investigative psychology and geographic profiling.
What is investigative psychology?
Attempt to apply statistical procedures alongside psychological theory.
This is in order to develop a statistical database which then acts as a baseline for comparison.
What are three important components of investigative psychology?
Interpersonal coherence
Significance of time and place
Forensic Awareness
What is interpersonal coherence in investigative psychology?
The way that an offender behaves at the scene, including how they interact with the victim may reflect their behaviour in more everyday situations.
Might tell the police something about the offender.
What is the significance of time and place in regards to investigative psychology?
Might indicate where the offender lives.