Component 3- criminal behaviour Flashcards
(93 cards)
Criminal Characteristics: What is crime/criminal behaviour?
- no characterised as a mental illness like schizophrenia or depression SO no set characteristics of criminals
- crime is more of a social issue. Crime is seen as outcome of any mental illnesses criminals may have, rather than an illness in its own right.
- what is considered crime differs depending on culture and time.
- Farr and Gibbons (1990) proposed classification system of crimes
Criminal Characteristics: Farr and Gibbons (1990)
- Property predatory crime (e.g. car theft): attempting/actually taking the personal property of another person w/ out permission
- Property fraudulent crime (e.g. fraud): deceit/manipulation w/ purpose of converting property/ services of others to their own use
- Interpersonal Violence general (e.g. murder): actions that threaten or cause actual personal harm
- Interpersonal violence sexual (e.g. rape): actions that threaten or cause actual personal harm sexually
- Transactional vice (e.g. prostitution): ‘victimless’ crimes where goods/services exchanged
- Order Disruption (e.g. loitering, rioting): actions with no direct victim, but concern raised about potential victims
- Folk/mundane crime: persons involved in actions from minor rule violating to more serious violations
Criminal Characteristics: Data on crime
-public can access data on crimes committed in local area on www.police.uk.
- In September 2016 in England and Wales 106,835 violent crimes were recorded
- crime data does not state total crime being committed, only reported crimes. Walker et al (2006) found 42% of all UK crimes reported
- Dark figure of crime includes all crimes not reported and/or recorded by police, such as cases of sex work and honour crimes. Victims may not report crimes due to fear of reprisal from offender or because the crime was culturally bound.
- Victim surveys aims to record all crimes including those not reported to police. random sample of 50,000 people who have been victims, witnesses, or know a victim interviewed about crime experiences. Provides insight of dark figure of crime
- Offender surveys give insight into crime from their perspective, but may have a sample bias as can only survey criminals who have been caught. They may differ from criminals who do get caught, uncaught criminals will be untruthful about crimes to avoid conviction and those who have been acight will exaggerate crimes to seem cool and build reputation with other criminals. They will have a bad outlok of police as they have been caught.
Criminal Characteristics: Issues of defining crime
- crime is a social construct: what is considered a crime is dependent on culture. Rape, murder, theft generally universal crimes. Crime can change over time
- Same sex marriage legal in UK but illegal in Saudi Arabia.
- those in LGBTQ+ community legal in UK, but in 1950s was illegal.
- meaningful research may not be able to be conducted if definition of crime is a constantly shifting target. Research may go out of date quickly, or not be generalisable to other cultures.
- crimes change to keep up with society, such as cybercrime became a crime when technology developed
- legal system needs to develop laws that are relevant to current society to be effective
- may not be possible for one theory to explain whole variety of crimes.
- crime may depend on context.
- most people have committed a crime without realising, but many say these people are not criminals.
- crime may be beneficial, if laws are unjust. Protesting or breaking these laws may be more moral than obeying them. Apartheid in South Africa was legal, but Nelson Mandela was branded as a criminal for fighting against racism.
Inherited Criminality: specific genes
- Monoamine Oxidase A (MAOA) and cadherin 13 (CDH13) linked to criminal behaviour
- Brunner et al. (1993) analysed DNA of 28 male members of a Dutch family with history of impulsive violent criminal behaviour. Found men shared gene that led to abnormally low levels of MAOA.
Inherited Criminality: Diathesis stress model and epigenetics
- epigenetics is of current thinking that more than one or a few genes on their own cause criminal behaviour. States genes are switched on/off by epigenomes that are affected by environmental factors (diathesis stress), such as maltreatment in childhood
- Caspi et al. 2002 used data from longitudinal study that has followed around 1000 people from when babies in 1970s. Assessed antisocial behaviour at 26 and found 12% low MAOA gene had experienced maltreatment in childhood but were responsible for 44% convictions.
Inherited criminality: Differences in the brain
- certain genes may cause differences in areas of brain/neurotransmitters. e.g. Seo et al (2008) found low level of serotonin could predispose people to impulsive aggression and criminal behaviour, partly because serotonin inhibits the prefrontal cortex (involved in regulating emotions and controlling behaviour and morality).
Inherited Criminality: Inherited personality
- Eysenck’s theory of the criminal personality proposed some people inherit types of behaviour that predispose them to criminality.
Inherited Criminality: Evaluation: strengths
- research support from adoption studies: Crowe (1972) found adopted children who had a biological parent with a criminal record had a 38% greater risk of having a criminal record by age 18, but adopted children whose mother’s did not have a criminal record only had 6% risk.
- Explaining non violent crime: most research only explains violent behaviour. Bio explanations may only account for crimes involving violence/psychopathy (lack empathy, more likely to commit crime). Blonigen et al (2005) found support for a genetic basis looking at over 600 male and female twins that psychopathy is inherited.
Inherited criminality: Evaluation: weaknesses
- Explaining non violent crime: does not explain theft, fraud, drug use etc (non violent crimes). Findlay (2011) suggests crime is socially constructed which includes many types of crime. Difficult to argue the behaviour can be explained by genetics and environment.
- brain differences- cause or effect?: for genes to cause criminal behaviour, they must be linked to a physical/psychological effect. As discovered by Raine (1997) criminals may have brain differences BUT criminals also report having a head injury. 8.5% of US general population have had a brain injury compared to 60% of US prison population (Harmon 2012). ALSO brain differences may be due to nurture rather than nature
Inherited criminality: Evaluation: Methodological issues
- using case study methods: limited participants, results cannot be generalised to wider pop
- defining crime: crime is a social construct and dependant on context in which it occurs. Laws change over time, so what is considered criminal today may not be in future.
Inherited criminality: Evaluation: social issues
- Gender bias: much of reasearch focussed solely on CG men, mostly ignoring women. completely ignored the Trans community and those identifying as gender fluid and non binary. Little attempt made to investigate criminality in other genders, and may not be appropriate to assume reasons for criminality in CG people is the same in all genders.
- reductionist: ignores environmental factors such as the media and poverty
Inherited Criminality: Evaluation: cultural issues
Definition of crime is a constantly shifting target: what is considered crime depends upon culture and time period in which it occurred.
Inherited Criminality: Evaluation: Ethical issues
- questions raised about what should happen to those found to have genes that supposedly predispose people to criminality. Identifying the gene may allow psychologists to stage interventions early in life to alter a child’s behaviour so they do not commit crime later in life. BUT the evidence of the gene could be misused, such as evidence used against them in court.
- may be argued cannot hold individual responsible for actions if their criminality is caused by biological factors, beyond their control. Are they punishable?
Describe early genetic theories of criminality
LOMBROSO:
- Lombroso (‘father of criminology’)
- Cesare Lombroso stated criminals had primitive physical characteristics and they represented an atavistic form. He stated that the particular inherited physical ‘stigmata’ explains the individual’s criminality.
- Outlined stigmata as asymmetry in face, hooked nose, high cheekbones, thick lips, wrinkled skin, protruding ears, long arms.
- Criminals cannot be blamed, as their criminality is inherited and therefore not their fault and out of their control (ignores free will, criminality is determined).
Describe the genetic explanation for criminality: Genetic factors
- one or more genes predisposes someone to commit crime
- twin studies where MZ and DZ twins are compared to e.g. Raine (1993) conducted research into delinquent behaviour of twins and found 52% concordance for MZ twins compared to 21% for DZ twins.
Does this explanation argue nature or nurture causes criminality?
Nature
Describe the structure and function of the amygdala
located in the medial temporal lobe and is a part of the limbic system. One amygdalae per hemisphere. Linked to hypothalamus, hippocampus and prefrontal cortex etc, so has widespread influence on brain functioning and behaviours associated with emotion, motivation and social interaction. plays role in assessment and response to environmental threats. Controls how we respond to fear stimuli.
how is the amygdala linked to aggression?
Emil Coccaro et al (2007) investigated effects of amygdala on aggression by studying those with intermittent explosive disorder (IED). Common symptom- outbursts of reactive aggression. Participants viewed images of faces, whilst having fMRI scan. IED participants had high levels of amygdala activity when viewing angry faces- demonstrates association between amygdala activity and processing angry emotions.
how is the amygdala involved in fear conditioning?
-Yu Gao and colleagues (2010) state humans learn as children to inhibit antisocial and aggressive behaviours through fear conditioning. Fear conditioning involved learning aggressive behaviour leads to punishment.
- Amygdala involved in processing fear info and fear conditioning.
- amygdala dysfunction causes child to not be able to identify social cues indicating threat (angry faces etc) so does not link punishment to aggressive beh. Fear conditioning disrupted, so person seems fearless, aggressive and antisocial.
- The researchers demonstrated this in longitudinal study of 1795 participants who were tested for fear conditioning at 3 years . Measure used was physiological arousal (sweating) in resposnse to a painful noise. 20 years later researchers found those who committed crime at 23 years showed no fear conditioning at 3 years old. This suggests casual relationship between amygdala dysfunction and antisocial/criminal behaviour.
describe the link between the amygdala and psychopathy and criminal behaviour
- psychopath (manipulative, emotionless, cunning, deceitful, lacking empathy)
- research shows amygdala dysfunction is a central deficit in psychopathy.
- Glenn et al (2009) studied 17 participants with various degrees of psychopathy, who all had fMRI scan whilst making judgements on dilemmas such as ‘Should you smother your crying baby to save yourself hiding from terrorists?’.
-Researchers found association between psychopathy and reduced amygdala activity in other people-normal activity inhibits antisocial behaviour. distress normally stops aggressive behaviour. BUT amygdala dysfunction in psychopaths differs as the inhibitory mechanism is disrupted so they make impulsive decisions, behave aggressively, become involved in criminal behaviour without guilt/remorse.
evaluate the amygdala explanation of criminal behaviour- strengths
research support. For instance, Derntl et al (2009) investigated the effects of testosterone on the activity i the amygdala in healthy male participants, using MRI scans. The findings showed that higher levels of testosterone improved the ability to process stimuli in the form of threats (angry, scared facial expressions), in the amygdala. As biological males have a higher level of testosterone than biological females, this study may account for why
males commit more violent crimes. Thus, this is a weakness as it provides supporting evidence that the amygdala plays a role, biologically in the cause of criminal behaviour. Secondly, there are longitudinal studies which support that additionally support this view. To name just one, Pardini et al (2014) selected 503 males twenty years after they’d taken part in another study at the age of six or seven. A subgroup was found of 56 men who had performed aggressive behaviour since they were children, such as violent crimes including rape and gang fighting. The amygdala volume of the participants was measured, using fMRI scans. This showed low amygdala volumes were associated with high aggression levels over the twenty years. A follow up was completed 3 years later, in which the results showed the same association. Confounding variables such as IQ, age and race were controlled, along with earlier levels of aggression. This is significant, as these factors therefore cannot explain the results found in the study. This study provides strong evidence of the role the amygdala plays in criminal behaviour and shows differences in the amygdala volume may be the reason for further criminality. This is a strength as the study further provides reason to believe the theories surrounding this biological explanation.
evaluate the amygdala explanation for criminal behaviour- weaknesses
it may be said that the effects of the amygdala are indirect. Elaborating on this further, the amygdala helps to regulate behaviours related to fear and anxiety, including the physiological arousal that occurs in the fight or flight response. If the amygdala is damaged, the brain cannot process fear, so one may have reduced empathy and a decreased ability to understand other people’s emotions. However, this doesn’t make aggressive behaviour inevitable, only more likely. This means that dysfunction in the amygdala doesn’t directly cause aggression but may make individuals at risk of it. Thus, this is a weakness of the explanation as it shows other biological and environmental factors cause criminality and so therefore the amygdala explanation is far too simplistic to explain a matter so complex and diverse as criminality. Secondly, there are other areas of the brain which have greater importance than the amygdalae. The amygdala is a part of the limbic system within the brain. It functions with the orbitofrontal cortex in the prefrontal cortex, which is said to influence self-control and stop impulsive actions and aggression. A study conducted by Raine and co-workers (1997) studied murderers who had shown an extremely high level of aggression in the crimes they committed. It was found these individuals had increased activity in amygdala and lower activity in the prefrontal cortex, including the orbitofrontal cortex. This shows that many areas of the brain may account for aggressive behaviour, not just the amygdala. This is a weakness as the explanation is just far too simplistic. Criminality is complex and may be influenced by the neural pathways between multiple structures within the brain, meaning reducing the cause completely down to just the amygdala is not enough.
evaluate the amygdala explanation of criminal behaviour- methodology
the definition of crime is an ever-changing social construct and depends upon the culture, time and place it occurred in. Acts considered to be crimes in present day may not have always been crimes and may not be in the future. This means that a biological explanation for criminality such as the role of the amygdala is not an effective explanation as criminality is socially defined and is not the same across cultures and countries. A crime cannot be explained by the amygdala in one country where it is legal, when the same act is legal in another. However, it may be argued that acts such as murder, which is considered a crime everywhere, can be explained by the role of the amygdala. Overall, this is a weakness as a biological explanation cannot account for a concept that differs depending on place, time and culture. Secondly, the research surrounding the amygdala explanation uses case studies. Case studies focus on just one person or just one family etc., so the results cannot be generalised to the wider population, as the sample size is not large enough and so doesn’t represent many different groups of people. This is a weakness as this reduces the validity of the explanation. Another methodological issue is that within the research, the studies often used self-report methods. These methods involve a participant themselves reporting on what they’re asked to. Social desirability bias is possible to come from self-report methods, which causes participants to lie about their experiences. Thus, this is an issue as the results obtained are not as accurate, so cannot be used to support the view that the amygdala is the cause of criminality. Lastly, the research often focusses on specific groups of criminals. These groups are often murderers, which ultimately means that other types of crime cannot be explained using the results from the research into murderers.