Forensics L3-8 Flashcards
(42 cards)
What is the historical approach to explaining offending behaviour?
- Lombroso suggested that criminal
individuals were ill-suited to modern society - believed criminals were genetic throwbacks/primitive sub-species, who were biologically different from non-criminals
How did Lombroso view offenders, AF?
- offenders seen as lacking evolutionary development
- their savage and untamed nature meant that they would find it impossible to adjust to demands of civilised society and would inevitably turn to crime
- saw criminal behaviour as natural tendency, rooted in genealogy of those who engage in it
What does the atavistic form include in terms of cranial characteristics?
- a narrow, sloping brow
- a strong prominent jaw
- high cheekbones
- facial asymmetry
- other physical features included dark skin and extra, toes, nipples or fingers
What is the atavistic form?
- Lombroso argued that criminal sub-species could be identified by set of particular physiological characteristics that were linked to particular types of crime
- these were biologically determined atavistic (meaning reversion to something ancestral) characteristics
- mainly features of the face and head
- indicates that criminals are physically different from the rest of us
How were murderers described, AF?
- bloodshot eyes
- curly hair
- long ears
How were sexual deviants described, AF?
- glinting eyes
- swollen/fleshy lips
- projecting ears
How were fraudsters described, AF?
- lips were thin and ‘reedy’
What traits did Lombroso suggest beyond physical traits, AF?
- insensitivity to pain
- use of criminal slang
- tattoos
- unemployment
How did Lombroso test atavistic form?
- examined the facial and cranial features of Italian convicts
- both living and dead
- proposed that the atavistic form was associated with a number of physical anomalies which were key indicators of criminality
- he examined the skulls of 383 (~400) dead criminals and 3839 (~4000) living ones
- concluded that 40% of criminal acts could be accounted for by the criminal subspecies
Atavistic form, +ve evaluation:
- had an important role in the shift away from theories
based on feeble-mindedness, wickedness and demonic possession - was the forerunner to more biological explanations, evolutionary and genetic
Atavistic form, -ve evaluation:
- attention drawn to the distinct racist undertones in Lombroso’s work
- many of the features he described as atavistic (e.g. dark skin and curly hair) are most likely to be found in people of African descent
- claim that atavistic characteristics were uncivilized, savage and primitive
supported the eugenic philosophy
= Goring (1913) set out to establish if there were any physical or mental abnormalities among the criminal classes
= after conducting a comparison of 3,000 criminals and 3,000 non-criminals he concluded that there was no evidence that offenders had particular facial and cranial characteristics
= he did suggest that criminals are more likely to have a below average intelligence - Lombroso did not compare his criminal sample to a non-criminal control group
- if he had done then the differences he reported may have disappeared
= even if criminals have atavistic characteristics this doesn’t necessarily mean that
these characteristics cause their criminal behaviour
= facial and cranial features
can be influenced by poverty and poor diet, which can also lead people to crime
What twin study supports the genetic explanation of crime?
- Lange (1930) investigated 13 monozygotic (identical) twins and 17 dizygotic (non-identical)
twins - at least one of the twins in each pair had served time in prison
- 10 of the 13 pairs of monozygotic twins had both spent time in prison
- whereas only 2 of the 17 pairs of dizygotic twins had both spent time in prison
What is the genetic explanation for crime?
- criminal behaviour could be polygenic; this means that no one single gene is responsible for offending
- many genes responsible for causing criminal behaviour
- known as, candidate genes
- genetic explanations for crime suggest that would-be offenders inherit a gene, or combination of genes, that predisposes them to commit crime
What gene study supports the genetic explanation of crime?
- Tilhonen et al. (2014) conducted genetic analysis of over 900 Finnish offenders
- revealed abnormalities on two genes that may be associated with violent crime
- first was the MAOA gene, which controls dopamine and serotonin in the brain and has been linked to aggressive behaviour
- second was the CDH13 gene, this gene has been linked to substance abuse and attention deficit disorder
- within Finnish sample individuals with this high-risk combo of genes were 13 times more likely to have a history of violent behaviour compared to a control group
What is suggested by the diathesis stress model, GE?
- holds that genetics influence criminal behaviour but this is at moderated by the effects of the environment
- tendency towards criminal behaviour may come through a combination of genetic predisposition and biological or psychological triggers
- such as being raised in a dysfunctional environment
What is the neural explanation of crime?
- suggests that there may be neural differences in the brains of criminals compared with non-criminals
- much of the evidence in this area has investigated individuals diagnosed with anti-social personality disorder (APD)
- APD is associated with reduced emotional responses and a lack of empathy
- a condition that characterises many convicted criminals
What brain imaging study supports the neural explanation of crime?
- several dozen brain-imaging studies demonstrating that individuals with anti-social personalities have reduced activity in the pre-frontal cortex of the brain
- is the brain area that regulates emotional behaviour
- Raine et al. found an 11% reduction in the volume of grey matter in the prefrontal
cortex of people with APD compared to a control group
What empathy study supports the neural explanation of crime?
- recent research has suggested that criminals with APD can experience empathy but that they do so more sporadically than the rest of us
- Keysers et al. found that only when criminals were asked to empathise (with a person on a film experiencing pain) did their empathy reaction (controlled by mirror neurons in the brain) activate
- suggests that APD individuals are not totally without empathy but may have a neural switch that needs to be turned on in order to experience it
- in a normal brain the empathy switch is permanently switched on
Genetic+neural explanations, -ve evaluation:
no +ve
- concordance rates in MZ twins are not high and leave plenty of room for non-genetic environmental factors
- concordance rates may be due to shared learning experiences rather than genetics
= brain scanning studies show pathology in brains of
criminal psychopaths
= but cannot conclude whether these abnormalities are genetic or signs of early abuse
- term ‘offending behaviour’ is too vague
- some specific forms of crime may be more biological than others e.g. physical aggression
= example of biological reductionism
= criminality is complex and explanations that reduce
offending behaviour to a gene or imbalanced neurotransmitter may be inappropriate and overly simplistic
= criminal behaviour does seem to run in families, but so does emotional instability, mental illness, social deprivation and
poverty
= twin studies never show 100% concordance rates in monozygotic twins
= so genetics cannot be the only explanation for criminal behaviour
- example of biological determinism
- presents us with a dilemma for our legal system
- if someone has criminal gene they cannot have personal and moral responsibility for their crime
- if this is the case it would be unethical to punish someone who does not have free will
What is Eysenck’s theory of the criminal personality, PE?
- according to Eysenck (1947) our personality traits are biological in origin
- come about through the type of nervous system we inherit from our parents
- therefore, all personality types have an innate biological basis
- offenders have distinctive inherited/genetic personality traits, they are high in neuroticism, extraversion and psychoticism
What do the traits suggested by Esyneck lead to, PE?
- high extraversion score, impulsive and seek sensation which draws them to the thrill of criminal behaviour
= high neuroticism score, tend towards offending because they are unstable and unpredictable
= Eysenck believed that people with a high neuroticism score had inherited a nervous systems that made them difficult to
condition, as a result they will not learn easily from their mistakes - high psychoticism, cold, lack empathy and are prone to aggression
Eysenck’s theory PE, -ve evaluation:
no +ve
- Farrington et al. reviewed several studies and reported that offenders tended to score higher on psychoticism
- but NOT on extraversion and neuroticism, when compared to non-offenders
= idea that all offending behaviour can be explained by a single personality type has been heavily criticised as being simplistic
= crime is too varied and
complex a behaviour to be due to one single personality type
= the type of individual who commits murder is likely to be very different to one who commits fraud
- out of step with modern personality theory
- Digman’s Five Factor Model of personality suggests that openness, agreeableness and conscientiousness are important personality dimensions, in
addition to extraversion and neuroticism
= Bartol and Holanchock looked into cultural differences
= studied Hispanic and African-American offenders in a max security prison in New York
= divided them into six groups based on their criminal history and the nature of their offences
= all 6 groups were found to be LESS extravert than non-criminal control groups
= means Eysenck’s theory could be culturally biased
- based on the idea that it is possible to measure personality through psychological tests
- critics have argued that personality may not be reducible to a score in this way
- many psychologists believe there is no such thing as stable personality
- on a daily basis people’s personality changes depending who they are with and the situation they are in
What are the cognitive explanations to psychology?
- moral reasoning
- cognitive distortions
What is moral reasoning, CE?
- Kohlberg proposed that the quality of people’s judgments of right and wrong can be summarised by a stage theory of moral development
- offenders more likely to have their moral reasoning classified at the pre-conventional level
- means that a person is punishment orientated, reasoning based on whether or not the act will lead to punishment
- and reward orientated, reasoning based on what can be gained
- is immature reasoning which typically lasts from ages 3-7
- teens and adults who still reason in this way may commit crime if they can get away with it
and/or gain rewards - e.g. money, respect etc.