Conclusion

• Past research

  • Animal and human studies
  • Identified link between areas of the brain and aggression
  • Eg: hippocampus modulates aggression in cats and humans
• Neural processes underlying violence are complex

  • Cant be reduced to single brain mechanism
  • Violence best explainee by disruption of network interacting brain mechanisms
• Confounding variables

  • Acknowledged that head injury and IQ have not been ruled out as contributing factors
• These results do not demonstrate:

  • Do not show violence is caused by biology alone
  • Results do not show murderers claiming NGRI are not responsible