Aggression Flashcards
What is social learning theory?
Branch of behaviourism developed by Bandura, he saw a role for cognition and environmental factors. He called the process of monitoring our behaviours self regulation.
What are the four stages of SLT?
- Observation- observing an aggressive behaviour of a model
- Retention- the aggressive behaviour is remembered
- Reproduction- the aggressive behaviour is imitated at a seemingly appropriate moment
- Motivation- positive reinforcement or punishment determines if the aggressive act is repeated
What are the 3 factors affecting the likelihood of imitation in SLT?
Self efficacy- our perceived ability to repeat the act successfully
Similarity- refers to our shared features or beliefs with the person who showed the aggressive behaviour
Vicarious reinforcement- the reaction the model receives- positive reinforcement or punishment
Describe Bandura’s Bobo doll study that supports the role of observation and imitation
Group 1 and 2- put in a room with toys and a Bobo doll, an adult enters the room and attacks the Bobo doll (punches, kicks, “pow”) The children were taken to a new room which also contained toys but were told they were for better children to frustrate them. In a third room they were observed playing with the toys.
Group 3 and 4- same procedure but watched a film
Group 5- watched a cartoon character “Herman the Cat”
Group 6- control group who saw nothing
1-5 shown to imitate the behaviour they had seen
Describe Bandura’s Rocky and Johnny study that supports the role of vicarious reinforcement
All children watched a 5 minute film of two adults- Rocky and Johnny
Group 1- J playing with toys, R asks if he can, J says no, R hits J, J left sat in corner while R plays (positive reinforcement
Group 2- R is punished
Group 3- R and J play non aggressively
Group 4- saw no film
All groups taken into a room with the same toys as seen in the film- group 1 showed the highest levels of aggression
Evaluate Bandura’s research in terms of ecological validity
Low ecological validity- contrived and artificial
Onyskiw
11,000 children aged 4-11, questionnaires completed about aggression. Children who witnessed more aggression were often more aggressive themselves- high ecological validity study.
Werner
2 samples of 9 yr olds, one sample had high aggression levels, the other low. The children were asked to give their 3 best friends who were assessed for aggression. Over a year, those with low aggression levels became more aggressive if their friends were aggressive.
Evaluate Bandura’s research in terms of population validity
Low population validity- only used children
Philips
Looked at heavy weight boxing matches between 1973 and 1978 and found a 12.5% rise 3 days after the match which decreased 6.6% after 4 days. When a white boxer was defeated the victims were likely to be white.
Evaluate Bandura’s research in terms of issues and debates
Nurture side of the nature-nurture debate- sees a role for cognition but not an important role for biology.
Deterministic- ignores the role of free will
What are the social psychological explanations of aggression?
SLT
Deindividuation
Define deindividuation
Loss of personal identity and a sense of anonymity which contrasts from our usual state of individuation where we feel responsible for our actions
Give possible factors which could create a sense of deindividuation
Crowds
Costumes
Darkness
Give a real life example of deindividuation
Ku Klux Klan
American white supremist group who wear a head to toe costume
How does deindividuation cause aggression?
Weakens inhibitions- release from normal constraints of being scared of being found out.
Heightens responsiveness to external cues- infected by violence in a crowd
Increases conformity to norms- don’t want to be the odd one out, states we keep a rational state of mind
Evaluate deindividuation in terms of issues and debates
Deterministic- feeling deindividuated will make you act aggressively- this isn’t strictly true- there are many peaceful protests which show people using their free will
Evaluate deindividuation with supporting research
Zimbardo
Females required to give shocks as an aid to learning
Half wore bulky lab coats, hoods that hid their faces and the others wore their own clothes, name tags and were introduced to each other by name and could dimly see the person they were giving shocks to. The hooded participants gave twice as much shock.
Give a problem with Zimbardo’s study
Deindividuation
The uniform given may have resembled that worn by the Ku Klux Klan and so may have acted as a demand characteristic.
Give details of a research study which supports the criticism of demand characteristics in Zimbardo’s study
Johnson and Downing
When participants wore surgical masks and gowns (to cause deindividuation) they gave significantly less shock than those whose names were emphasized. This suggests that the participants clothing, rather than deindividuation, may have led to differences in behavior.
Give details of two supporting studies of Zimbardo’s research
Mullen
Analysed lynch mob violence reported in newspapers from 1899 to 1946. They found that the more people involved in the mob, the more violent the lynching.
Rehm et al
German children were divided into five a side teams to play handball, one team played in their normal clothes and the other played in orange shirts. Those who wore orange shirts played significantly more aggressively.
Give details of a study which refutes the idea of deindividuation causing aggression
Gergen et al
6 men and 6 women into a normally lit room or a dark room and were left for an hour. The first 15 minutes were spent exploring the room and chatting idly. The next 30 minutes were spent in deeper conversation. The final 15 minutes turned physical- half hugged each other, some became intimate and 80% reported feeling aroused. They dark caused individuation and so should’ve caused aggression.
What 5 studies do you need to know for SLT?
Bandura- Bobo doll and Rocky and Johnny
Onyksiw
Werner
Philips
What 5 studies do you need to know for deindividuation?
Zimbardo Johnson and Downing Mullen Rehm et al Gergen et al
What are the 3 biological explanations of aggression?
Neural
Hormonal
Genetic
When talking about the neural explanation what is the brain structure and the 2 neurotransmitters involved in aggression?
Amygdala
Serotonin
Dopamine
Describe how the amygdala could cause aggression (include 2 illustrative studies)
The amygdala is part of the limbic system. One function of the limbic system is to control emotions and so would be possible for it to be responsible for aggressive outbursts.
Kluver and Bucy
They removed the temporal lobe (much of the limbic system) from monkeys and found they became much more docile. Further studies found removal of the amygdala alone caused a decrease in aggression.
Charles Whitman
Killed his mother and wife and then shot at students. He killed 14 and injured 44. A post mortem showed he had a cancerous tumour on his amygdala which would have put pressure on it and therefore stimulated it.
Evaluate the role of the amygdala in aggression
Narabayashi
Developed a procedure called the amygdalotomy which involves destroying the amygdala. It was used on patients with extreme aggression levels. He reported great success with 43/51 patients showing a decrease in aggression.
(However this could have been due to general brain damage.)
Raine et al
PET scans carried out on murderers and a group of controls and found the murderers to have abnormalities in the amygdala.
(However there were many differences and so it may not have been the sole responsibility of the amygdala)
Describe the role of serotonin and dopamine in aggressive behaviour
Serotonin is a chemical that keeps us calm and stops us overreacting to emotional stimuli. If levels become too low this calming effect is reduced and aggression is more likely to result.
Dopamine at high levels is linked to aggressive behaviour
What studies do you need to know to evaluate the role of serotonin and dopamine in aggression?
Raleigh et al Mann et al Ferrari et al Scerbo and Raine Couppis and Kennedy
Outline Raleigh et al’s study
Neurotransmitters
Two groups of monkeys, one fed diets high in tryptophan and one low. Tryptophan is a building block for serotonin. They found the group with more serotonin showed a decrease in aggression and the group with less showed an increase in aggression.
Outline Mann et al’s study
Neurotransmitters
Gave 35 healthy participants dexfenfluramine which is known to decrease serotonin. From questionnaires they found the drug caused an increase in aggression in their male participants but not their female
Outline Ferrari et al’s study
Neurotransmitters
Allowed a rat to fight every day for 10 days, on the 11th the rat wasn’t allowed to fight and measured serotonin and dopamine which were low and high respectively supporting both theories of serotonin and dopamine
However, there’s the issue of cause and effect
Outline Scerbo and Raine’s study
Neurotransmitters
Meta analysis of 29 studies published looking at neurotransmitter levels and antisocial adults and children. They found lower levels of serotonin but stable levels of dopamine and so supports serotonin but not dopamine theory.
Outline Couppis and Kennedy’s study
Neurotransmitters
In mice, performing an aggressive act led to the award pathway being triggered and dopamine levels increasing. This would explain why aggressive acts would continue but not why they begin.
Evaluate the neural theory using issues and debates
Nature side of the nature nurture debate as they solely look at the role of biology
Reductionist as they attempt to explain the cause of aggression in really limited terms- each neurotransmitter is responsible for a number of behaviours
Socially sensitive as it could be seen to excuse aggressive acts in humans
Describe hormonal mechanism in aggression
High levels of testosterone is linked with aggression Woman produce 10X less than men
The link is that women produce less testosterone and aggression levels are lower in women
Kalat noted that the most violent crimes are by males aged 15-25 which is the time where testosterone peaks
Beeman castrated male mice and found their aggression reduced