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Alcohol intoxication and self-aggressive behavior.

Michael S McCloskey1, Mitchell E Berman

  • 1Department of Psychology, University of Southern Mississippi, Hattiesburg 39406-5025, USA. mmcclosk@yoda.bsd.uchicago.edu

Journal of Abnormal Psychology
|June 6, 2003
PubMed
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This study experimentally shows that alcohol intoxication, with a mean blood alcohol concentration of .10, causally increases self-aggressive behavior in men. Observing a self-aggressive model also independently influenced these behaviors.

Area of Science:

  • Psychology
  • Neuroscience
  • Behavioral Science

Background:

  • Observational studies link alcohol intoxication to self-aggression.
  • Causal relationship between alcohol and self-aggression remains unclear.

Purpose of the Study:

  • To experimentally investigate the causal effect of alcohol intoxication on self-aggression.
  • To examine the moderating role of observing a self-aggressive model.

Main Methods:

  • Experimental design with 40 male participants.
  • Alcohol or placebo beverage administration.
  • Measurement of self-aggression via self-administered shock intensity during a reaction-time task.
  • Inclusion of a self-aggressive model condition for half the participants.

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Main Results:

  • Alcohol intoxication significantly increased self-aggressive behavior.
  • Alcohol intoxication accounted for over 30% of the variance in self-aggression.
  • Independent effects of alcohol and observing a self-aggressive model were observed.

Conclusions:

  • Alcohol intoxication causally influences self-aggressive behavior in men.
  • Observing aggressive models is an independent factor influencing self-aggression.
  • Findings contribute to understanding the etiology of alcohol-related self-harm.