Forensic Psychology Flashcards
(171 cards)
What are the two types of offender profiling?
Top-down
Bottom-up
What is the top-down approach?
Starts with pre-defined criminal profiles and works out which of these profiles the criminal fits into
The general profiles come first and the specific details come after
What do police in America use and what do police in Britain use?
America: top-down
Britain: bottom-up
How did Douglas et al describe the sequence of the FBI’s top-down approach to offender profiling:
-Assimilation
-Classification
-Reconstruction
-Profile generation
What does assimilation mean in the top-down approach?
Data from the scene is gathered and examined
What does classification mean in the top-down approach?
Data classified into offender profiles
What are the two offender profiles used in the top-down approach?
Organised
Disorganised
What are the key factors of an organised offender?
Above-average or high intelligence
Crime planned
Controlled
Clears evidence from scene
Skilled
Socially and sexually competent
Follows media coverage of the crime
What are the key factors of an disorganised offender?
Bellow-average or low intelligence
Crime is impulsive with little or no planning
Lacking control
Evidence left behind
Unskilled
Socially and sexually incompetent
Does not follow media coverage of the crime
What does reconstruction mean in the top-down approach?
Profiler will attempt to reconstruct the crime
This involves identifying the timeline of the crime - including both the criminal’s and victim’s behaviour
What does generate a profile mean in the top-down approach?
Profiler will generate a profile of the criminal
This involves filling in specific details about the criminal - e.g. physical and psychological characteristics - beyond those described in the organised and disorganised profiles
This narrows the list of suspects
What are two strengths of the top-down approach to offender profiling?
-Supporting evidence
-Based on evidence
Describe supporting evidence as a strength of offender profiling?
McCrary and Grant used this approach to develop a profile of the man responsible for the murders of several prostitutes in the late 1980s
This profile ended up being a close match for the offender who was eventually found guilty
This suggests that the top-down approach works
Describe based on evidence as a strength of offender profiling?
The organised and disorganised offender profiles were developed by the FBI from interview and data from 36 US murderers, including Ted Bundy and Charles Manson
What are three weaknesses of the top-down approach to offender profiling?
-Conflicting evidence
-Limited applications
-Overly simplistic
Describe conflicting evidence as a weakness for the top-down approach to offender profiling
Pinizzotto and Finkel compared the accuracy of profiles created by 6 US-trained profilers against profiles created by control groups
In a task that required participants to create a profile for a sexual assault case, the profiles created by the trained profilers were no more accurate than profiles created by the control group
Describe limited applications as a weakness for the top-down approach to offender profiling
The top-down approach only works for some types of crime
For example, rapists and murderers typically have a particular modus operandi that reveal information about their character and so for these crimes the top-down approach may be useful
However, crimes such as burglary do not typically reveal any idiosyncratic details about the criminal and so bottom-up approaches are likely to be more useful
Describe over-simplistic as a weakness for the top-down approach to offender profiling
The binary of organised and disorganised offender may be too simplistic as it’s likely many offenders won’t fit neatly into either category
For example, it’s possible that a high IQ person could commit a spontaneous and unplanned murder in a fit of rage
However, high IQ is a characteristic of the disorganised profile and so sticking too rigidly to these offender profiles could lead to inaccurate profiling
What is the bottom-up approach to offender profiling?
Starts with the criminal’s characteristics and develops the profile based on that
The specific details of the crime come first and the general profile comes second
What is investigative psychology?
The use of scientific psychology and psychological theory to solve crimes and identify criminals
What is the key concept of investigative psychology?
Interpersonal coherence
What is interpersonal coherence and who is it described by?
Canter 1994
Means that the way a criminal behaves when they are committing a crime will be consistent with how they behave in everyday life
e.g. a killer who commits aggressive murders is likely to be an aggressive person in general
So, if there is evidence of an aggressive murder, the profile of the suspect will include an aggressive personality
What are the examples of statistical analysis in investigative psychology?
Multidimensional scaling
Smallest space analysis
How is statistical analysis used in investigative psychology?
To identify common themes and patterns of behaviour across several crime scenes
e.g. details about the type of victim, what specific acts are committed, and how evidence is disposed of can be used to identify crimes committed by the same person
Statistical data can also be used to provide information about the offender’s location through geographical profiling