Biological Classic Study

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Who conducted the classic study?
Raine et al
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Aim
To see if there is a correlation between brain activity and convicted murders, to see whether these convicted murderers are not guilty with reason of insanity (NGRI)
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Procedure
Murderers compared them with a control group matched on age and gender, everyone was screened to see if they were fit, had to do a conscious test whilst getting a PET scan, had to focus on blurred numbers, scan measured metabolic activity in brain,
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Results
The NGRI's had a deficit of activity in the prefrontal cortex, parietal lobe, corpus callosum and left hemisphere of amygdala, high activity in right Hem of amy, hippocampus and Occipital lobe
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Conclusion
The brain differences were associated with the violent behaviour
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Generalisability
Large sample, representative, BUT NGRI aren't usual offenders, not really representative of murderers
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Reliability
PET scanning is very reliable,produces objective and replicable results, control group was matched up making it reliable
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Applicability
Identifies at risk children so we can help them
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Validity
It does measure what it sets out to measure, however unusual task when being scanned lowers ecological V, can not show cause and effect, very reductionist and not explaining personal social cultural influences (lacks external validity)
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Ethics
NGRIs agreed to the study, fully informed consent, invasive procedure
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Aim

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To see if there is a correlation between brain activity and convicted murders, to see whether these convicted murderers are not guilty with reason of insanity (NGRI)

Card 3

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Procedure

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Card 4

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Results

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Card 5

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Conclusion

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