Serotonin and dopamine

• What does it do?

  Normal levels of serotonin are associated with reasonable degrees of self-control.
• Link with aggression?

  • Decreased serotonin links to reduced self-control.
  • Reduce serotonin leads to dopamine overactivity.
  • Both are linked to impulsivity and aggression.
• Evidence?

  Levels of serotonin breakdown product were lower in violent, impulsive offenders compared to non-violent offenders.