Amygdala and Brain Injury Evaluation points

?
  • Created by: tomtom11
  • Created on: 03-02-17 10:36
Brain Injury STRENGTH - Blumer et al (1975)
Case studies show that frontal lobe damage causes AS personality. Orbifrontal cortex damage = poor impulse control, outbursts, lack of interpersonal sensitivity, poor decision making.
1 of 12
Brain Injury STRENGTH - Williams et al (2010)
60% of 196 males in custody have some brain injury, causing neuroticism. High rates, also, of recidivism, suggesting injuries affect temperance, temperament, social judgement, and impulse control.
2 of 12
Brain Injury STRENGTH - Grafman et al (1996)
Vietnam Head Injury Study = 14% brain injury patients got into fights compared to 4% who got into fights without brain injury.
3 of 12
Brain Injury WEAKNESS - Kruetzer et al (1991)
20% of 74 patients were arrested before their brain injury, but only 10% were arrested after their injury. Without a previous traumatic incident, it appears that Traumatic Brain Injury wasn't' a risk factor in criminal behaviour.
4 of 12
Brain Injury WEAKNESS - Elbogen et al (2012)
1388 war veterans = 9% arrested since return + those with PTSD/ABI = more likely to be arrested. Traumatic BI = not reason, but PTSD, previous criminal history, negative feelings or drug abuse = more likely.
5 of 12
Brain Injury WEAKNESS of reductionism.
It's hard to isolate and identify factors affecting criminal behaviour, it may not just be the brain injury that's causing the ASB.
6 of 12
Amygdala STRENGTH - Glenn et al (2009)
Said it's not the size of the amygdala that's reduced in psychopaths, but the function- proved in an fMRI scan, when amygdala activity was reduced during moral decision making- implying less emotional control (criminal)
7 of 12
Amygdala STRENGTH - Raine et al (1997)
Found asymmetrical activity in the amygala (lower in the left but higher in the right), which is different to the non-criminal controls.
8 of 12
Amygdala STRENGTH - Pardini et al (2013)
56 men who had lower volumes of the amygdala were more likely to show violent and aggressive behaviour and psychopathic traits when compared to controls up to 3 years later.
9 of 12
Amygdala WEAKNESS - Fallon (2006)
Performed MRI scans and seemed to have the ability to identify the brains of psychopaths, thus rejecting the theory of it being due to the amygdala. However, Fallon famously misidentified his own brain as psychotic, thus the theory is strong again.
10 of 12
Amygdala WEAKNESS of crediblity
Not credible due to people not being sure that it is the size of the amygdala or the level of the activity in the amygdala or other areas of the brain as well.
11 of 12
Amygdala WEAKNESS - Bufkin and Lutterell (2005)
They carried out a review of studies that used scanning to look at aggressive and violent behaviour. These studies tended to focus on different brain areas and not just the amygdala, suggesting it doesn't solely cause criminal behaviour.
12 of 12

Other cards in this set

Card 2

Front

60% of 196 males in custody have some brain injury, causing neuroticism. High rates, also, of recidivism, suggesting injuries affect temperance, temperament, social judgement, and impulse control.

Back

Brain Injury STRENGTH - Williams et al (2010)

Card 3

Front

Vietnam Head Injury Study = 14% brain injury patients got into fights compared to 4% who got into fights without brain injury.

Back

Preview of the back of card 3

Card 4

Front

20% of 74 patients were arrested before their brain injury, but only 10% were arrested after their injury. Without a previous traumatic incident, it appears that Traumatic Brain Injury wasn't' a risk factor in criminal behaviour.

Back

Preview of the back of card 4

Card 5

Front

1388 war veterans = 9% arrested since return + those with PTSD/ABI = more likely to be arrested. Traumatic BI = not reason, but PTSD, previous criminal history, negative feelings or drug abuse = more likely.

Back

Preview of the back of card 5
View more cards

Comments

No comments have yet been made

Similar Psychology resources:

See all Psychology resources »See all Criminological and Forensic Psychology resources »