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The Resident-intruder Paradigm: A Standardized Test for Aggression, Violence and Social Stress
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Physical aggression is associated with heightened social reflection impulsivity.

Grace M Brennan1, Arielle R Baskin-Sommers1

  • 1Department of Psychology.

Journal of Abnormal Psychology
|June 14, 2019
PubMed
Summary

Physically aggressive individuals exhibit higher social reflection impulsivity, gathering less information before making judgments. This impulsivity, especially with hostile interpretations, is linked to a history of violent crime.

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Area of Science:

  • Cognitive Psychology
  • Forensic Psychology
  • Social Psychology

Background:

  • Physical aggression has detrimental effects on individuals and communities.
  • Aberrant interpretation of ambiguous social information is linked to aggression.
  • Cognitive mechanisms underlying this link, such as reflection impulsivity, are not well understood.

Purpose of the Study:

  • To investigate the relationship between physical aggression and social reflection impulsivity.
  • To examine how reflection impulsivity varies with hostile versus benign social judgments.
  • To determine if social reflection impulsivity moderates the link between physical aggressiveness and violent crime.

Main Methods:

  • A novel social information sampling task was used to assess reflection impulsivity.
  • The study included 98 incarcerated men.
  • Social judgments (hostile/benign), reflection impulsivity, subjective certainty, and history of violent crime were assessed.

Main Results:

  • Physically aggressive individuals showed heightened social reflection impulsivity, particularly with hostile judgments.
  • Increased certainty in hostile judgments was observed in more aggressive individuals.
  • Impulsive hostile judgments in aggressive individuals correlated with a history of assault charges.

Conclusions:

  • Physically aggressive individuals demonstrate deficits in information gathering during decision-making.
  • This leads to ill-informed and inflexible social judgments.
  • Findings suggest reflection impulsivity as a key cognitive mechanism linking aggression and crime.