Neural and/or hormonal Mechanisms in Aggression

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1. What did Virkkunen find?

  • In clinical studies of antidepressants (increases serotonin levels) impulsive aggression and irritability were reduced
  • Low levels of cortisol in habitual violent offenders
  • Castration(reducing testosterone levels) of schizophrenics (High dopamine levels) had no effect on aggressive tendencies
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Other questions in this quiz

2. What do amphetamines also do as well as increase aggressive behaviour?

  • It increases noradrenaline which acts on the CNS and triggers the fight or flight response, so this may increase aggression.
  • Reduces dopamine

3. Low levels of serotonin....

  • No aggression
  • Highly aggressive
  • Passive Aggressive

4. Which study found that castration(reducing testosterone levels) of schizophrenics (High dopamine levels) had no effect on aggressive tendencies?

  • Dabbs et al.
  • Wagner et al.
  • Bremmer
  • Virkkunen

5. What effect does testosterone have on aggression?

  • It activates areas of the brain dealing with aggression increasing levels of aggression
  • High levels of cortisol inhibits testosterone leading to low levels of testosterone which reduces aggression
  • Inhibits aggressive responses to emotional stimuli
  • Stimulates aggressive responses to emotional stimuli

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