Forensic Psychology: Paper 3 Flashcards
What is the top-down approach
A01: The Top-Down Approach
Technique developed by the FBI in which 36 convicted murderers were interviewed. As a result of their responses, 24 were classified as organised offenders and 12 as disorganised offenders.
This is the typology of the top down approach.
What happens in the data assimilation stage?
A01: The Top-Down Approach
Data assimilation refers to information gathered from the crime scene such as choice of victim and location.
All information, even if trivial is included and possible suspects should not be considered yet as it may bias info collected.
Based on the data collection, what offender types have been created?
A01: The Top-Down Approach
Profilers have created pre-existing categories of offender types called organised and disorganised offenders based on the data collected.
What is an organised offender?
A01: The Top-Down Approach
An organised offender leads an ordered life and kills after some sort of critical life event. Their actions are premeditated and planned, they are likely to bring weapons and restraints to the scene. They are likely to be of average to high intelligence and employed.
What is a disorganised offender?
A01: The Top-Down Approach
A disorganised offender is more likely to have committed the crime in a moment of passion. There will be no evidence of premeditation, and they are more likely to leave evidence, such as blood, semen, murder weapon, etc., behind. This type of offender is thought to be less socially competent and more likely to be unemployed.
How is a criminal profile constructed using the top-down approach?
A01: The Top-Down Approach
To generate a profile of the offender, the profiler
- Review the evidence gathered from the crime scene and other material evidence
- The crime scene is classified as organized or disorganized
- The crime is reconstructed – based on the evidence gathered hypotheses are made about what has occurred in terms of order of events, behaviour of the offender and of the victim.
What is determined then to identify suspects?
A01: The Top-Down Approach
These elements are then compared to the typographies and a profile is generated.
A range of inferences are then made such as demographic assumptions (gender, age etc), physical features and expected behaviours to identify potential suspects,
The Top-Down Approach is too simplistic as it reduces criminal behaviour into two categories.
A03: The Top-Down Approach
Top-down profiling is reductionist, as the classification system (organized/disorganized) is too simple.
Offenders are not simply either disorganized or organized.
It may be that there are both organized and disorganized features to all their crimes.
An offender may start off being disorganized and become more organized as they develop their modus operandi.
Not applicable to all crimes
A03: The Top-Down Approach
Only suitable to crimes which reveal a lot about the criminal.
Common crimes such as burglary or destruction of property cannot be aided with this method because the crime reveals little about the offender this means that it is a limited approach to identifying a criminal
Snook provides research support for the effectiveness of top-down approach.
A03: The Top-Down Approach
Snook found that Canadian major crime officers agreed that criminal profiling helps solve 94% of cases and is a valuable investigative tool.
Positive customer feedback through customer satisfaction surveys would suggest that detectives feel offender profiling is effective in helping with their work.
Sample bias
A03: The Top-Down Approach
There is a sample bias. The original interviews were carried out using 36 serial killers in the USA (cultural bias), thus meaning the sample is biased as many were serial killers with potentially unique characteristics.
It is too small and unrepresentative upon which to base a typology system that may have a significant influence on the nature of the police investigation.
Alison provides contradictory evidence for the effectiveness of top-down approach.
A03: The Top-Down Approach
Alison argues that many of the predictions in profile are ambigious.
Alison gave two groups of police detectives the same profile, but each group was provided with the details of two very different offenders. In each group, 75% rated the profile as somewhat accurate and 50% as generally/very accurate.
This suggests that police are adding meaning to what are ambiguous statements and is an extension of Barnum effect (whereby vague evidence of the crime could be manipulated to fit characteristics of particular type of offender).
Evidence does not support the existence of a ‘disorganised offender’
A03: The Top-Down Approach
Evidence does not support the ‘disorganised offender’- Canter et al used smallest space analysis and analysed data from 100 murderers in the USA.
The details of each case were examined using 39 characteristics that were ‘typical’ of organised and disorganised offenders. The findings showed evidence of a distinct organised type, but not for disorganised.
Therefore, it appears that the classification of the ‘disorganised’ offender has very little basis in reality according to his findings.
Effective in real-life applications
A03: The Top-Down Approach
A strength of the top down approach is that it has application to real life.
By using the organised/disorganised typology, the police were able to successfully arrest Arthur Shawcross.
He murdered 11 women in New York. The key part of his profile was the belief he would return to the dead victims later to re-experience the pleasure of killing. As a result of this, police set up surveillance and caught him.
This is a strength because this practical application increases validity
Another strength of the top down approach to profiling is that it can be adapted to other kinds of crime such as burglary.
Provide research support…
A03: The Top-Down Approach
Tina Merketa (2017) reports that top-down profiling has recently been applied to burglary, leading to an 85% rise in solved cases in the US states.
The detection method used for burglary retains the organised-disorganised distinction but also adds two new categories: interpersonal and personal.
This suggests that top-down profiling has wider application than originally assumed.
Unscientific, perhaps the bottom-up approach is more sufficient…
A03: The Top-Down Approach
The process is not based on any science or theory and so the accuracy of the profiles may be very subjective, and this can be explained yet again by the Barnum effect.
Perhaps, it may be better to use the bottom-up approach compared to using the top-down approach as it is more scientific and based on psychological theory compared to the top-down approach, which is over-simplistic.
What is the bottom-up approach?
A01: Bottom-Up Approach
- A bottom-up approach that starts with small details and creates the big picture. No initial assumptions are made about the offender, and the approach relies heavily on computer databases.
This approach believes that it is the little details that are often overlooked that can be crucial to the success of a case.
What is investigate psychology?
A01: Bottom-Up Approach
- This aims to use computer databases and a program called Smallest Space Analysis, where patterns are identified, and attempts to see if it is possible that a series of offenses are linked.
What is interpersonal coherence?
A01: Bottom-Up Approach
- Central to this approach is the concept of interpersonal coherence.
This means the behaviour of the offender at the time of the crime will be comparable to what they’re like in everyday life.
For example, degrees of violence used in serious crimes, especially rape, may reflect how the criminal treats other women in his non-criminal life.
What is geographical profiling?
A01: Bottom-Up Approach
- Geographical Profiling is used to make inferences about where an offender is likely to live. This is also known as crime mapping. It assumes that locations of crime and not random. This assumption helps investigators narrow down their search areas.
What theories have developed as a result of the geographical approach?
A01: Bottom-Up Approach
- The circle hypothesis suggests that because offenders operate according to a limited spatial mindset crimes radiate out from their home base creating a circle.
- Canter’s Circle theory (1993) proposed two models of offender behaviour. Offenders are classified as either marauders (who commit crimes close to home, within the circle) or commuters (who travel away from home to offend).
*This therefore works on the principle that criminals have a mental map or schema of spatial information. The information about the location of the crime scene reflects the offender’s mental map. These maps are unique to the individual such as their job, age and employment.
A strength is the approach has a scientific basis
A03: Bottom-Up Approach
Canter argues that the bottom-up approach is more objective and scientific than top-down.
Investigators can use geographical, biographical and psychological data to produce data to assist in the investigation.
Investigative psychology has also expanded to include areas like suspect interviewing and examination of material presented in court – supporting its use in the judicial process and thus its real life application in real world settings , increasing the ecological validity of this research.
A strength is evidence supports circle hypothesis
A03: Bottom-Up Approach
Canter and Larkin showed 87% of a sample of 45 British serial sexual assaulters were marauders.
This supports the circle hypothesis and the idea that choice of the place of the crime is a significant factor in offender behaviour.
A strength is wider application of the approach
A03: Bottom-Up Approach
The bottom-up approach can be applied to a wide range of offences compared to the top-down approach.
Techniques can be used in the investigation of crimes from burglary/theft to murder/rape.
This means that the bottom-up approach is more valuable than the top-down approach as an investigative technique.
Mixed results for effectiveness of bottom-up approach
A03: Bottom-Up Approach
Richard Kocsis et al (2002) found that chemistry students produced a more accurate offender profile on a solved murder case than experienced senior detectives.
This is a limitation because despite its many successes as an approach there is doubt cast here over if it is a reliable approach.
Very time consuming
A03: Bottom-Up Approach
This is because it takes longer to use methods such as investigative psychology and geographical profiling when attempting to catch offenders
Thus, making it a weakness because it is not as useful as police are under pressure to close cases quickly and therefore may have less of a widespread use
Suffers from the problem of statistically abnormal offenders
A03: Bottom-Up Approach
These peoples behaviour would not match what would be expected by intuition based on experience or by considering what is statistically probable behaviour based on previously solved cases of offenders who have actually been caught.
Socially sensitive & a hinderance to police investigations
A03: Bottom-Up Approach
Both methods of offender profiling can be criticised for being socially sensitive & a hinderance to police investigations
Many argue that there’s a danger that too much effort may be put into building offender profiles at the expense of other police resources that may be crucial in an investigation.
There may also be instances where profiles have been inaccurate & led to miscarriages of justice
Although there are benefits to offender profiling, many argue that it shouldn’t be overly relied upon - it should complement an investigation rather than lead it
Successful Application
A03: Bottom-Up Approach
~ A strength of the bottom-up approach is that its been used successfully to catch offenders
~ Canter used his approach to provide an accurate offender profile for the ‘railway rapist’ (John Duffy) who sexually assaulted & murdered women near railways in London
~ The crime locations & offender’s behaviour were consistent across the crimes - they all occurred near railways & the victims were treated similarly and was able to find a link between the rapes and murders that occurred.
~ This confirms that the bottom-up approach to offender profiling has useful applications in fighting crime
What does Lombroso’s theory of criminology suggest and what is an atavistic form?
A01: Historical Approach to explaining offending behaviour
- Lombroso’s (1876) theory of Criminology suggests that criminality is inherited and that someone “born criminal” could be identified by the way they look.
- He suggested that there was a distinct biological class of people that were prone to criminality. These people exhibited ‘atavistic’ (primitive) features that resembled our ancestors such as large jaws or very small ears.
Lombroso argued that criminals were not to blame for their criminal activities as their behaviour was determined by their physiology.
How can criminals be identified?
A01: Historical Approach to explaining offending behaviour
- Lombroso claimed that criminal types were distinguishable from the general population because they looked different.
For example, he believed that the features of the thief included: expressive face, manual dexterity, and small, wandering eyes.
Empirical Evidence: Attempt to identify physical markers indicative of the atavistic form.
A01: Historical Approach to explaining offending behaviour
- In his study where he examined the skulls of 383 dead Italian criminals and 3839 living ones, he found 40% of them had atavistic characteristics, providing empirical evidence that atavistic form was associated with criminality.
Despite such criticism he has been hailed the ‘father of modern criminology’, increased our understanding of criminal profiling.
A03: Historical Approach to explaining offending behaviour
Despite such criticism he has been hailed the ‘father of modern criminology’. He is credited with shifting the emphasis in crime research away from a moralistic and religious perspective (prior crime was attributed to spirits and the devils influence), towards a more scientific and credible realm and he heralded the way for criminal profiling. In this way he made a major contribution to the science of criminology.
Biological determinism –> positive implications on society.
A03: Historical Approach to explaining offending behaviour
Lombroso’s theory of criminality is an example of biological determinism, arguing criminals are not to blame for their activities as their behaviour was determined by their physiology.
By rejecting the notion of free will in favour of biological determinism, this has implications for the legal system as it suggests that causes outside the criminals control could be considered in the justice system, helping support arguments for a less severe punishment.
Thus led to renowned changes that have revolutionised the legal system.
Theory of atavistic form has been developed into current theories such as Eysenck’s theory of personality.
A03: Historical Approach to explaining offending behaviour
Although the theory of atavistic form has been rejected, we still try to identify criminal types.
For example, Eysenck’s theory looks at personality types and criminality.
In addition, research into genetic causes of criminality suggests that some people have an innate disposition to commit crimes.
So, Lombroso’s later ideas, about an interaction between biological factors and our environment, applies to some more current theories.
Unscientific
A03: Historical Approach to explaining offending behaviour
In today’s time his methods and conclusions would be regarded as unscientific. He merely measured the features of criminals and had no control group.
Without a comparison with non-criminal controls, it is difficult to draw conclusions and state that a feature is distinguishing, extra nipples and large ears may equally be characteristics of non-criminals too.
Contradictory Research Support
A03: Historical Approach to explaining offending behaviour
Goring (1913) conducted a comparison between 3000 criminals and 3000 non-criminals and concluded that there was no evidence that offenders are a distinct group with unusual facial and cranial characteristics.
This challenges Lombroso’s theory that criminals have distinct physical characteristics demonstrating that Lombroso’s research lacks reliability.
Issues with cause and effect
A03: Historical Approach to explaining offending behaviour
There is an issue with cause and effect between physical characteristics and criminality, as a relationship between the two variables does not necessarily mean one is causing the other.
Facial differences may be caused by other factors such as poor diet or poverty and may not be a result of delayed evolutionary development.
Therefore, his view on criminal behaviour is a form of biological reductionism and he should have taken a more holistic view, focusing also on environmental factors to make his research more valid.
Ethical implications
A03: Historical Approach to explaining offending behaviour
This theory has ethical implications. This is a limitation because if we can identify criminals based on their appearance that may imply, we should lock them up prior to them committing a crime.
Whether he intended this to be the case or not is up for debate; though there is a little doubt, it is an uncomfortable and controversial aspect of his legacy which continues to overshadow criminology.
Scientific racism and socially sensitive.
A03: Historical Approach to explaining offending behaviour
Additionally, Lombroso is biased in terms of scientific racism. He identified characteristics like curly hair and dark skin as typical characteristics of a criminal. These characteristics are more likely to be found in African people.
This means that his ideas may have reflected the view of people in society at the time and may not be an accurate explanation of offender behaviour.
Suffers from alpha bias and androcentrism
A03: Historical Approach to explaining offending behaviour
The theory is gender biased, as Lombroso believed women were less evolved than men.
He didn’t study women directly, but believed they are passive, maternal and low in intelligence, thus unlikely to become criminals.
He also believed women that were criminals had ‘masculine’ traits, which would be fine in men but made women ‘monsters.’
These androcentric views were fairly typical in the 19th century and were not based on empirical evidence.
What does Eysenck’s Theory of Personality propose about our personality and how this links to criminals?
A01: Psychological Explanations of Offending Behaviour: Eysenck’s Theory of Personality
According to Eysenck, our personality is innate and has a biological basis.
There is a personality type known as the criminal personality. Individuals with a criminal personality will score highly on measures of extraversion, neuroticism, and psychoticism.
What is extraversion and how can this be linked to criminality?
A01: Psychological Explanations of Offending Behaviour: Eysenck’s Theory of Personality
Extraverts are outgoing due to having a chronically under-aroused nervous system.
This means that they require more environmental stimulation to fuel their excitement.
Extraverts are thus harder to condition and socialise and fail to learn from their mistakes.
Thus, this can be linked to criminality as they engage in dangerous activities in order to be stimulated.
What is neuroticism and how can this be linked to criminality?
A01: Psychological Explanations of Offending Behaviour: Eysenck’s Theory of Personality
Neuroticism measures how strongly your nervous system reacts to aversive stimuli. Highly neurotic people have stronger responses in situations of threat, leading to them being unstable and having more extreme emotional changes.
This can be linked to criminality because neurotics are unstable and therefore prone to over-react to situations of threat which could explain some criminal activity.
What is psychoticism and how can this be linked to criminality?
A01: Psychological Explanations of Offending Behaviour: Eysenck’s Theory of Personality
Highly psychotic people are aggressive, cold, antisocial, and egocentric, which can be linked to criminality because criminals tend to be aggressive and lack empathy.
These people are seen as difficult to condition (train) and cold and unfeeling, and it is these traits which may explain their criminality.
What do criminals therefore measure on the criminal personality type?
A01: Psychological Explanations of Offending Behaviour: Eysenck’s Theory of Personality
The criminal personality type is highly Extravert, Neurotic and Psychotic.
A strength of Eysenck’s theory of criminal personality is that it has supporting research evidence –> predictors.
A03: Psychological Explanations of Offending Behaviour: Eysenck’s Theory of Personality
Dunlop assessed a sample of students and friends and found that both extraversion, psychoticism and lie scales were good predictors of delinquency (minor offences e.g. theft).
Therefore, this gives support and validity to Eysenck’s claims of a link between personality traits such as extraversion and psychoticism and criminal behaviour.
How are these findings limited however…?
A03: Psychological Explanations of Offending Behaviour: Eysenck’s Theory of Personality
However, these findings should be treated with caution as the sample was students with crimes limited to minor offences, restricting how far this research can support personality as an explanation of all criminal behaviour such as more serious offences like murder for example.
Contradictory research evidence for Eysenck’s Theory of Personality
A03: Psychological Explanations of Offending Behaviour: Eysenck’s Theory of Personality
Farrington et al.’s (1982) review of studies showed offenders scored high on psychoticism but not on extraversion or neuroticism. There is also little evidence of consistent differences in EEGs between extraverts and introverts.
This casts doubt on the physiological basis of Eysenck’s theory.
Cultural bias
A03: Psychological Explanations of Offending Behaviour: Eysenck’s Theory of Personality
Bartol and Holanchock (1979) studied Hispanic and African American offenders in a New York maximum security prison, dividing them into six groups based on criminal history and offence.
All six groups were less extravert than a non-criminal control group. Bartol and Holanchock suggested this was because the sample was a different cultural group from that investigated by Eysenck.
Therefore, this research appears to lack population validity and questions the generalisability of the criminal personality.
Biological Determinism
A03: Psychological Explanations of Offending Behaviour: Eysenck’s Theory of Personality
Eysenck is criticised for biological determinism as he suggests that criminal personality has a biological basis, suggests that an individual does not have free will or choice over how they act.
For example, this implies that extraverts cannot control their desire for stimulation because of the type of nervous system they inherited and thus are predisposed to committing dangerous criminal activities.
How does this have implications on the legal system?
A03: Psychological Explanations of Offending Behaviour: Eysenck’s Theory of Personality
This explanation has implications on the legal system (which operates on men’s rea meaning that people have a free choice to perform their actions) because if adopted it would raise questions as to whether criminals should be held responsible for their actions because the biological approach suggests that they had no free will or choice in committing their crimes as their personality has made them biologically predisposed to becoming a criminal.
Eysenck’s theory does not consider other dimensions of personality.
A03: Psychological Explanations of Offending Behaviour: Eysenck’s Theory of Personality
More modern personality theorists like Digman suggest that Eysneck is too simplistic.
Digman’s 5 factor model includes other important dimensions of personality like conscientiousness and agreeableness, those may be more important in criminality, as not all NE personality types become criminals.
Reductionist Explanation
A03: Psychological Explanations of Offending Behaviour: Eysenck’s Theory of Personality
A weakness is that there is conflicting evidence by Coleta van Dam that suggests this is a reductionist explanation.
They found that only a small number of male offenders in juvenile detention centres scored highly on all 3 of Eysenck’s personality traits.
This suggests that personality is not the only factor in explaining criminality and that other factors must contribute to the offending behaviour in Van Dam’s study such as amygdala activity and social influences such as poverty, unemployment need considering.
Further research support for the effectiveness of Eysenck personality quiz –> convicted inmates.
A03: Psychological Explanations of Offending Behaviour: Eysenck’s Theory of Personality
McGurk and McDougall gave the Eysenck personality questionnaire to 100 convicted inmates and 100 trade based students e.g. bricklaying and those aged 17-20.
The results showed a high number of people with extravert, neurotic and psychotic personality types in the delinquent group.
Social class was also controlled for –> extraneous variables eliminated.
How can we use twin studies to determine the likelihood of inheriting criminal behaviours?
A01: Biological Explanations of Offending Behaviour: Genetic
One way of investigating a genetic explanation of offending behaviour is to use twin studies in which concordance rates are compared between MZ (identical) and DZ (non-identical) twins in relation to criminality
i.e. if one twin has committed a crime how likely is it that the other twin has also committed a crime?
If the concordance rates for criminal behaviour is higher among MZ twins than DZ twins we can suggest that criminal behaviour is genetically inherited.
How can specific candidate genes play a role in inheriting criminal behaviours?
A01: Biological Explanations of Offending Behaviour: Genetic
Brunner studied a genetic abnormality commonly known as the ‘warrior gene’ as it is associated with excessively violent and aggressive behaviour, which may lead to crime.
This mutation/abnormality on the X chromosome leads to increased levels of MAOA.
As MAOA removes the neurotransmitters serotonin, dopamine, and noradrenaline, this leads to lower levels of these neurotransmitters, which can then lead to behavioural problems and thus criminal behaviour.
Therefore these candidate genes could mean someone is more biologically predisposed to committing criminal behaviours.
What has research into neural abnormalities found?
✩ Research has found abnormalities in some parts of the brain in violent criminals.
How does having reduced functioning play a role in criminal behaviours?
A01: Biological Explanations of Offending Behaviour: Neural
The prefrontal cortex is involved in regulating emotion and controlling moral behaviour in general
Raine citied 71 brain imaging studies showing that murders, psychopaths and violent individuals have reduced functioning in the prefrontal cortex.
This is associated with impulsiveness and loss of control and thus reduced functioning in the prefrontal cortex is believed to make people more prone to committing violent crime.
How does serotonin play a role in criminal behaviours?
A01: Biological Explanations of Offending Behaviour: Neural
Researchers such as Seo suggest that low levels of serotonin may predispose individuals to impulsive aggression and criminal behaviour.
This is because low levels of serotonin mean a lack of inhibition by the prefrontal cortex, of impulsive and aggressive urges.
Therefore, some criminals may have been predisposed to committing crime because they have inherited low levels of serotonin.
Methodological limitation of Brunner et al’s study –> for case study method.
A03: Biological Explanations of Offending Behaviour: Genetic
Brunner et al.’s (1993) research has been criticised for using a case study method.
Case studies are uniquely specific to the small number of individuals involved and therefore lack representativeness.
This matters because it is difficult to apply the results beyond the family in question, since the genetic make-up is unique to them.
Real life applications in treatment of criminal behaviour
A03: Biological Explanations of Offending Behaviour: Genetic
Potential benefit of research on neural abnormalities is that it could lead to possible methods of treatment.
For example, if low levels of serotonin are related to increased aggressiveness in criminals, then people in prison could be given diets or foods like milk that that would enhance their serotonin levels and hopefully decrease their aggression.
This suggests that changes in diet could be used to help some individuals, showing how nurture (environment) can be manipulated to positively impact nature (biological factors outside of people’s control).
Oversimplistic –> does not explain other types of crime
A03: Biological Explanations of Offending Behaviour: Genetic
One limitation of neural explanations for offending behaviour is that they have been criticised for being oversimplistic.
For example, the link between abnormal levels of dopamine and offending behaviour, is centred around violent and aggressive behaviour, which does not explain all types of crime.
This suggests that this explanation lacks the complexity necessary to understand why individuals commit crimes such as fraud or drug dealing, which aren’t necessarily of violent or aggressive nature.
Not all people who have genes like MAOA variant are criminals –> taking an interactionist approach may explain criminality better.
A03: Biological Explanations of Offending Behaviour: Genetic
It is suggested that only some of these candidate genes are expressed due to interacting with the environment.
Perhaps a better explanation for offending behaviour is taking a more interactionist approach through the diathesis approach.
For example, pre-existing vulnerability for criminality by inheriting candidate genes (the diathesis) and obtaining an aggressive behaviour through environmental stressors such as child neglect resulting in violence and possibility of criminal behaviours.
Low in validity
A03: Biological Explanations of Offending Behaviour: Genetic
It is difficult to gain a large sample size of willing violent criminal volunteers especially those who happen to be twins or adopted. This means a result many of these studies measure anti-social behaviour
This does not necessarily mean that these participants would actually perform criminal offending behaviour.
Influenced the legal system due to theories of biological determinism
A03: Biological Explanations of Offending Behaviour: Genetic
Biological explanations of offending behaviour advocate for biological determinism, suggesting that an individual does not have free will or choice in committing criminal behaviour due to circumstances out of their control such as inheriting candidate genes.
This has important implications for the justice system as it means judges that understand criminal behaviour is due to biological determinism would consider sentences that focus on treatment rather than a harsh punishment.
Social sensitivity
A03: Biological Explanations of Offending Behaviour: Genetic
Researchers that argue for biological determinist explanations for offending behaviour do need to consider the social sensitivity of their ideas.
Genetic theories could be used to justify policies that discriminate against people with certain genes on the basis of reducing violent crime.