Castrated mice; aggression decreased. Injected the same mice with testosterone, aggression was re-established
Beeman
1 of 10
Measure testosterone in the saliva of 692 male prisoners. Higher levels in those convicted of violent crimes e.g. ****. Lower levels in those involved in theft
Dabbs
2 of 10
Studied 12 fraternities. Those with highest levels of testosterone were described as macho. Those with lower levels were more attentive and helpful
Dabbs
3 of 10
PET scans of brain activity of 41 murderers. Found less activity (glucose metabolism) in the pre-frontal cortex.
Raine et al
4 of 10
Temporal lobe epileptics can become violent and attack people and furniture
Ashford
5 of 10
Female prisoners; those with higher levels of testosterone were convicted for unprovoked violence. Those with lower levels were convicted for defensive violence.
Dabbs
6 of 10
Psychiatric patients had reduced cerebral blood flow to the pre frontal cortex
Volkow et al
7 of 10
43/51 psychosurgery patients whose amygdala was destroyed had reduced aggression
Narabyashi
8 of 10
Case study of a female patient whose amygdala was electrically stimulated. She experienced facial grimacing, anger, and flung herself at a wall
Mark and Ervin
9 of 10
Damage during infancy is related to adult aggression
Anderson et al
10 of 10
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Measure testosterone in the saliva of 692 male prisoners. Higher levels in those convicted of violent crimes e.g. ****. Lower levels in those involved in theft
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