Biological Aggression
Mind map showing the biological explanations of aggression
- Created by: becca1103
- Created on: 15-05-14 15:43
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- Biological Aggression
- Neural Mechanisms
- Prefrontal Cortex
- Small size or reduced functioning may cause aggression
- Studies of brain scans of criminals show correlation between smaller prefrontal cortexes and aggression (but not in all)
- PHINEAS GAGE
- Amygdala
- Over activity may cause aggression
- Study stimulated amygdala in a woman, became aggressive
- Patients with destroyed amygdalas had reduced aggression (although not all of them, may be other factors)
- These are very complex mechanisms, we may be wrong or over-simplifying things
- DETERMINISTIC: May be distressing for victims
- Prefrontal Cortex
- Hormones
- Testosterone
- Moderates neurotransmitters that control aggression
- Two critical periods (birth and puberty)
- REDUCTIONIST: Other factors like environmental stimuli have been found to be strongly correlated with aggression
- Castration research, those castrated less aggressive (however it may have disrupted other hormones)
- Low levels of cortisol also linked to high aggression
- Testosterone
- Genetics
- Aggression is inherited from parents because genes control bodily mechanisms that can influence hormones and such
- Reductionist
- Treats psych as a science
- Brunner et al Dutch family with common faulty MAOA gene in the men, and all are aggressive
- Without a properly functioning MAOA gene the excess serotonin in the brain isn't broken down, causing increased aggression
- Aggression is inherited from parents because genes control bodily mechanisms that can influence hormones and such
- Neural Mechanisms
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