Forensic Psychology Flashcards
Define forensic psychology.
The application of psychological principles to different stages of the criminal justice system
Define crime
Any act(or lack of act) that violates the law and is punishable. It’s harmful to the individual, group or society.
Give two examples of acts that are criminal in the UK but not other countries
- Polygamy
2. Forced marriage
Give two examples of crimes that have changed over time.
- Homosexuality
2. Physical discipline on children by parents and/or teachers
Define official statistics.
Government records of the total number of crimes reported to police and recorded in official figures
State an advantage of official statistics.
Allow government to develop crime prevention strategies and policing initiatives - direct resources where needed most
State a disadvantage of official statistics
Many crimes are unrecorded - 75% of crimes not recorded, ‘dark figure’ of crime
What are victim surveys?
A survey of victims’ experience of crime over a period of time - 50,000 households are randomly selected for Office for National Statistics to produce crime figures
State a disadvantage of victim surveys.
Rely on respondents having accurate memory. Telescoping can occur - remember events more recently than they occurred
State an advantage of victim surveys.
More likely to include details of crimes that weren’t reported to the police (‘dark figure’) - in 2006/7 official stats showed 2% decrease in crime, but crime survey showed 3% increase
What are offender surveys?
The Offender Crime and Justice Survey - given to voluntary criminals. Measures self-reported repeated offending, trends in offending, drug and alcohol use, role of co-offenders and perpetrator-victim relationship
State an advantage of offender surveys.
Provide insight into how many people are responsible for committing certain crimes (many offenders or repeat offender)
State a disadvantage of offender surveys.
Targets a certain class of criminals (burglars, murderers etc) - misses out middle-class crimes, such as embezzlement
What is the aim of offender profiling?
Narrow down the field of enquiry and the list of suspects
What does the top-down approach originate from?
Orignated in US from FBI Behavioural Sciences Unit.
In-depth interviews with 36 sexually motivated serial killers (e.g. Ted Bundy and Charles Manson)
How is the top-down approach used?
Profilers match what is known about the crime and the offender to either ‘organised’ or ‘disorganised’ categories
Define modus operandi
The signature way offenders do their crimes
What are the characteristics of an organised offender?
- Planned the crime beforehand - carries weapon
- Victim purposefully targeted (certain type)
- Socially and sexually competent
- Above average intelligence - skilled profession
- Often married with children - live away from crime scene
What are the characteristics of an organised crime scene?
- Little evidence
2. High control of offender
What are the characteristics of an unorganised offender?
- Spontaneous crime - uses opportunity weapon
- Lower than average intelligence - unskilled/unemployed
- History of sexual dysfunction/failed relationships
- Live alone - often close to crime scene
What are the characteristics of an unorganised crime scene?
- Body left at crime scene
2. Little control of offender (impulsive)
State and describe the main stages of constructing an FBI profile.
- Data Assimilation - profiler reviews evidence
- Crime Scene Classification - profiler classes the crime scene as organised or disorganised
- Crime Reconstruction - profiler generates hypothesis of sequence of events in crime
- Profile Generation - profiler generates hypothesis of offender characteristics
State and describe the serial killer types suggested by Holmes (1989). (Disadvantage)
- Hedonistic - kill for thrill and pleasure
- Visionary - often have psychosis, kill due to belief of greater power
- Power - kill for feeling of power
- Mission - kill certain group of people
State an issue with the interviews with the 36 serial killers. (Disadvantage)
Too small a sample - too unrepresentative to be used as a basis for investigations
State a disadvantage of the top-down approach
- Only applies to certain crimes (rape, cult killings, murders) and not common offences like burglary - crime scenes of such crimes reveal less about type of offender
- Canter (2004) argued you can’t rely on self-report data
- Canter et al (2004) analysed 100 murders in USA for organised/disorganised characteristics. Findings didnt suggest evidence for a disorganised type - undermines system
- Classification is based on assumption that offenders have a pattern that remains consistent across situations and contexts - criticised as being based on out-dated models of personality
How is the bottom-up approach used?
Profile is data-driven - grows as more details gained. More grounded in psychological theory than top-down approach
What are the two main elements of the bottom-up approach?
Investigative Psychology
Geographical Profiling
What is the aim of investigative psychology?
Establish behavioural patterns likely to occur at certain crime scenes - creates a database for comparison to reveal statistically probable details of the offender. Key assumptions include interpersonal coherence and the time and place of the crime.
Define interpersonal coherence.
The way in which an offender behaves at the crime scene - may reflect everyday behaviour. Tells the police how the offender relates to people (women) generally
Define forensic awareness.
Refers to individuals who attempt to cover their tracks - may have been arrested before (already have DNA on file)
What is geographical profiling (crime mapping)?
Using the location of linked crime scenes to make inferences of the house of the offender. Offender usually operates in familiar area - live in the middle of their surrounding crimes. Earlier crimes closer to their house (familiarity).
State and describe the two models of offender behaviour proposed by Canter and Larkin (1993).
The Marauder - operates close to home
The Commuter - operates a distance from their home
How does the spatial pattern help in an investigation?
Can tell whether the crime was planned or opportunistic, and gives facts about offender (age, transport, employment)
State three advantages of the bottom-up approach.
- Can be applied to wide variety of offences
- More scientific than top-down approach - grounded in psychological theory
- Canter and Heritage (1990) conducted content analysis of 66 sexual assault cases. Common characteristics were identified - use of impersonal language to victim, lack or reaction to victim. Re-occurring characteristics help to distinguish if same or different offenders
State three disadvantages of the bottom-up approach.
- Failures in use - woman was stabbed and sexually assaulted, offender wasn’t convicted initially due to not meeting the prospected profile (taller than expected)
- Copson (1995) surveyed 48 police forces - found advice from profilers useful in 83% but only lead to accurate identification in 3% of cases
- Kocsis et al (2002) found chemistry students produced more accurate profile than experienced senior detectives
Who developed the historical approach to offending?
Lombroso (1876), Italian Physician
What are atavistic characteristics?
Physical characteristics linked to particular types of criminals - Lombroso described them as a primitive sub-species
State some cranial and physical atavistic characteristics
- Narrow, sloping brow
- Prominent jaw
- High cheekbones
- Facial asymmetry
- Dark skin
- Extra fingers/toes/nipples
State the atavistic features of murderers.
Bloodshot eyes, curly hair, long ears
State the atavistic features of sexual deviants.
Glinting eyes, Swollen/fleshy lips, projecting ears
What are the characteristics of ‘born criminals’?
Insensitivity to pain, Use of criminal slang, Tattoos, Unemployment
Describe Lombroso’s study of atavistic characteristics.
Examined skulls of 383 dead criminals and 3839 living criminals - 40% criminal acts accounted for due to atavistic form. Proposed physical anomalies as indicators of criminality.
State an advantage of Lombroso’s approach.
He’s the father of modern criminology, and credited for shifting crime research to a scientific discussion (criminals were seen as weak-minded before). He started criminal profiling
What are the methodological issues with Lombroso’s study?
- Didn’t compare to non-criminal control group
2. Many of the criminals had a history of psychological disorders (confounding variable)
How is eugenics related to Lombroso’s approach?
Eugenics refers to the belief of preventing a certain group of people from reproducing due to believed inferiority within that group. Lombroso’s theory states that criminals (those with atavistic features) are of a sub-species - racist, discriminatory theory