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Concurrent reinforcement and alcohol: interactive effects on human aggressive behavior.

T H Kelly1, D R Cherek, J L Steinberg

  • 1Veterans Administration Medical Center, Shreveport, Louisiana.

Journal of Studies on Alcohol
|September 1, 1989
PubMed
Summary
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Alcohol consumption increases aggressive behavior in a dose-dependent manner. This effect is influenced by reinforcement schedules, suggesting situational factors mediate alcohol

Area of Science:

  • Psychology
  • Neuroscience
  • Behavioral Science

Background:

  • Alcohol consumption is frequently linked to aggressive behavior.
  • The precise mechanisms and modulating factors remain under investigation.

Purpose of the Study:

  • To investigate the dose-dependent effects of alcohol on human aggressive behavior.
  • To examine the influence of nonaggressive reinforcement contingencies on alcohol-induced aggression.

Main Methods:

  • Six adult males consumed varying doses of alcohol (0–0.5 g/kg).
  • Participants engaged in a task involving earning points and occasionally "subtracting" points from a fictitious participant.
  • Aggressive responses were measured when point subtractions were attributed to the fictitious participant.

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Main Results:

  • Alcohol consumption led to a dose-related increase in aggressive responding.
  • Aggressive responding was significantly influenced by the concurrent reinforcement schedule.
  • A significant interaction was observed between alcohol dosage and reinforcement contingencies.

Conclusions:

  • Alcohol's effects on aggression are modulated by situational factors, specifically reinforcement schedules.
  • Reinforcement contingencies not directly linked to aggression can influence alcohol's impact on aggressive behavior.
  • Understanding these interactions is crucial for explaining the situation-dependent nature of alcohol's effects.