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Morphine and human aggression

M Berman1, S Taylor, B Marged

  • 1Department of Psychology, Kent State University, OH 44242-0001.

Addictive Behaviors
|May 1, 1993
PubMed
Summary
This summary is machine-generated.

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Morphine increased aggression in male undergraduates. Participants taking morphine were more likely to attack and reacted more aggressively to provocation compared to those taking a placebo.

Area of Science:

  • Psychopharmacology
  • Neuroscience of aggression

Background:

  • Aggression is a complex behavior influenced by various factors.
  • Opioids, like morphine, are known to affect mood and behavior.

Purpose of the Study:

  • To investigate the effect of immediate-release oral morphine on human aggression.
  • To determine if morphine enhances willingness to initiate and levels of aggressive responses.

Main Methods:

  • Twenty-eight male undergraduates participated in the study.
  • Participants received either 45 mg of immediate-release oral morphine or a placebo.
  • Aggression was measured using a competitive reaction-time task involving administering electric shocks to a bogus opponent.

Main Results:

Related Experiment Videos

  • Subjects receiving morphine showed increased willingness to initiate attacks.
  • Morphine group exhibited higher levels of aggression at all provocation levels.
  • Compared to placebo, morphine significantly enhanced aggressive behavior.

    • Conclusions:

    • Immediate-release oral morphine can increase aggressive tendencies in young men.
    • Opioid administration may lower the threshold for initiating aggressive acts.
    • Further research is needed to explore the neurobiological mechanisms underlying morphine-induced aggression.