Neural explanation of aggression

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  • Neural explanation of aggression
    • AO1
      • Serotonin
        • Relaxation, inhibits aggressive impulsives
        • Low levels associated with aggression, impulsive behaviour and violent suicide
        • Serotonin inhibits our response to emotional stimuli that can lead to aggressive behaviour
        • Reduced serotonin= reduced ability to control aggressive impulses
      • Dopamine
        • Reward neurotransmitter for food sex ect - evolutionary
        • High levels associated with aggression however not as well established as serotonin
    • AO2
      • Dopamine
        • Coupiss et al- Dopamine plays reinforcing role in aggression- people seek aggression becuase of rewarding sensationit can provide- inc in dopamine)
        • Drug treatment
          • Buirelaar (2003)
            • Antipsychotics reduce dopamine (antagonist)- when given to violent delinquents, aggression reduced
          • Lavine (1997)
            • Amphetamines increase dopamine (agonist)- Increase in aggressive behaviour under influence of amphetamines
      • Serotonin
        • Alcohol and serotonin
          • Alcohol causes  a decrease in serotonin level - increased alcohol consumption positively corralated with aggression.
        • Higley  (1996)
          • Male Rhesus monkeys- measured serotonin levels. Lowest serotonin more likelly to fight, have scars, pick fights with larger opponents
        • Drug treatment
          • Mann et al (1990)
            • Diet pills lower serotonin- Redux reduces appetite by reducing serotonin. Males more hostile when taking drug (questionnaire)
          • Bond (2005)
            • Anti-depressants increase serotonin( antagonist)    Prozac reduces impulsive aggressive behaviour
        • Mann et al (1996)
          • Violent suicides associated with low serotonin
    • AO3
      • Animal studies
      • Ethical issue s make it hard to prove/provide evidence
      • Gender Bias
      • Reductionist

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