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Relationship between psychopathy, aggression, anger, impulsivity, and intermittent explosive disorder.

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|April 25, 2014
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Summary

Intermittent explosive disorder (IED) is linked more to trait aggression and anger than psychopathic personality. Psychopathy does not significantly explain differences between IED and control groups.

Keywords:
IEDaggressionangerimpulsivitypsychopathy

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Area of Science:

  • Psychiatry
  • Neuroscience
  • Forensic Psychology

Background:

  • Intermittent explosive disorder (IED) involves recurrent, reactive aggressive behavior, affecting 5-6% of US adults.
  • Aggression in psychopathy is often proactive, differing neurobiologically from reactive aggression seen in IED.

Purpose of the Study:

  • To investigate the prevalence of psychopathic personality traits in individuals with IED.
  • To explore the relationship between IED, psychopathic personality, aggression, anger, and impulsivity.
  • To re-analyze existing data to assess psychopathy's impact on IED findings.

Main Methods:

  • A phenomenological study using the Psychopathology Checklist-Screening Version (PCL-SV) in IED and control participants.
  • Analysis of aggression, anger, and impulsivity measures.
  • Re-analysis of data from five published studies comparing IED and control groups.

Main Results:

  • A modest proportion of IED participants exhibited substantial psychopathic traits.
  • Trait aggression and anger, not psychopathy, were the strongest correlates of IED.
  • Little evidence indicated that psychopathy influenced findings in IED compared to controls.

Conclusions:

  • IED is primarily associated with reactive aggression, anger, and impulsivity, rather than psychopathic personality.
  • Psychopathic personality traits do not appear to be a significant explanatory factor for the differences observed in IED.