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PSYA3

AGGRESSION
BIOLOGICAL EXPLANATIONS


SEROTONIN - neurotransmitter known to exert calming affect and maintaing mood. Low levels linked to aggressive behavior.
MONKEY STUDY - Natural environment study of rhesus monkeys. Males with low serotonin more likely to fights, have most scars and
wounds and be dead by age 6. Aggressive…

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PSYA3

AGGRESSION
BIOLOGICAL EXPLANATIONS
EVIDENCE - PET scans compared brain activity of 41 convicted MALE murderers compared to normal males (MATCHED CONTROL)
findings showed murderers had different brain function in areas of the brain compared to the control group. murderers had reduced
activity in the PC and had abnormal activity…

Page 3

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PSYA3

AGGRESSION
BIOLOGICAL EXPLANATIONS
BANDURA VARIATION - repeated bobo doll study with twins and found no difference between MZ and DZ pairs suggesting
that individual differences in aggression were more the product of environmental influences such as SLT rather than
genetic factors.





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