0. A level Forensic Psychology Flashcards
What is offender profiling?
A method of working out the characteristics of an offended by examining the characteristics of the crime and crime scene
What is an organised type of offender?
This type of offender commits a planned crime, may engage in violent fantasies with the victim, and is high in intelligence and social competency.
What is a disorganised type of offender?
The crime scene is left with many clues such as fingerprints, there is little evidence of engagement with the victim, and the offender has lower intelligence and competence.
Describe the process involved in top-down profiling.
1 Data assimilation - The profiler reviews the evidence
2 Crime scene classification - as either organised or disorganised
3 Crime reconstruction - Hypothesise about the sequence of events and what happened.
4 Profile generation -hypothesise about the likely offender
Describe an organised crime scene.
- Little forensic evidence
- Body usually found elsewhere, or not at all
- Killer maintained control throughout
- Pre-Meditated
- Often a trophy is taken
Describe a disorganised crime scene.
- Impulsive, unplanned
- Lots of forensic evidence
- Hurried
- Little control from the offender.
Who developed the bottom-up approach?
David Canter
What are the two main processes involved in bottom-up profiling.
1) Investigative Psychology
2) Geographical profiling
What are the three main features of investigative psychology?
- Interpersonal coherence
- Forensic awareness
- Smallest space analysis
What is interpersonal coherence?
People are often consistent/coherent. So, we should look for parallels between how a person commits their crimes and how they are likely to live their live, eg an aggressive crime is likely committed by an aggressive persom
What is forensic awareness?
The extent to which the criminal seemed to be aware of forensic science may be relevant
What is smallest space analysis?
A statistical technique used to identify key themes and categories in a crime
What are the three main themes in smallest space analysis.
- Instrumental opportunistic
- Instrumental Cognitive
- Expressive compulsive.
Who discovered the three main themes of smallest space analysis?
Canter and Salfati (1999) analysed 82 UK murder cases and found these themes.
What is the “instrumental opportunistic” category?
The murder was used to obtain something or accomplish a goal, but the offender took the easiest options and was opportunistic
What is the “instrumental cognitive” category?
it was instrumental (like imstrumental opportunistic) but the offender was more planned
What is the “expressive compulsive” category?
The murder was carried out in the heat of the moment, sometimes provoked
What is geographical profiling?
-The locations of crimes are a significant clue not in terms of who committed them, but where the offender is based.
-This involves using circle theory and Criminal Geographic Targeting (CGT)
Describe circle theory?
Canter & Larkin (1993) found that offenders tend to carry out their crimes within a distinct radius. However, they differ in terms of where that radius is. They categorise offenders into either marauder or commuter offenders
Describe a marauder offender.
Marauder offenders will commit crimes within a distinct radius around their home
Describe a commuter offender.
Commuter offenders will commit crimes within a distinct radius of a place that is familiar to them, even if miles away from their homes
What is Criminal Geographic Targeting?
- A more technologically-advanced version of Circle theory. Rather than showing one circle in which the offences took place, it takes into account more factors like time the crime took place and movement to and from the scene
- This creates an image known as a ‘jeopardy surface’ (or ‘probability map’) so that profilers can narrow down their search area even further
What are the three personality spectra involved in Eysenck’s personality inventory?
Introversion-extraversion
Stable-Neurotic
Psychotism-Normality
What is introversion/extraversion?
The extent to which you seek new experiences and social contact. Introverts perfer their own company and routine, extraverts prefer socialising and get bored quickly