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Humans engage in aggression when they seek to cause harm or pain to another person. Aggression takes two forms depending on one’s motives: hostile or instrumental. Hostile aggression is motivated by feelings of anger with intent to cause pain; a fight in a bar with a stranger is an example of hostile aggression. In contrast, instrumental aggression is motivated by achieving a goal and does not necessarily involve intent to cause pain (Berkowitz, 1993); a contract killer who murders for...
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Decoding the bidirectional links between alcohol misuse and aggression: toward a unified translational framework.

Nicholas M Russell1, Micah D Frier2, Marco Bortolato3

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Alcohol misuse and aggression have a complex, two-way link. Shared vulnerabilities and reinforcing effects create a cycle, influencing neurobehavioral mechanisms and treatment strategies for both conditions.

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Behavioral Science

Background:

  • Alcohol misuse and aggression share complex bidirectional associations.
  • Converging evidence suggests shared genetic, neurobiological, and environmental vulnerabilities.
  • These behaviors can mutually increase risk, creating a reinforcing cycle over time.

Purpose of the Study:

  • To synthesize epidemiological, clinical, and experimental findings on alcohol misuse and aggression.
  • To establish an integrated framework linking these two behaviors.
  • To introduce a translational perspective connecting human and animal research.

Main Methods:

  • Review of epidemiological studies.
  • Synthesis of clinical findings.
  • Integration of experimental and preclinical research.

Main Results:

  • Alcohol use can facilitate aggression by disrupting executive control and increasing emotional reactivity.
  • Aggression can increase vulnerability to alcohol misuse, with aggressive traits often preceding problematic drinking.
  • Shared dysfunctions in prefrontal-limbic circuits underpin both behaviors.

Conclusions:

  • The relationship between alcohol misuse and aggression is dynamic and bidirectional.
  • Overlapping neurobehavioral mechanisms are central to this relationship.
  • Integrating clinical and preclinical models offers targets for mechanistic investigation and therapeutic development.