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Related Experiment Video

Updated: Mar 22, 2026

Use of a Psychophysiological Script-driven Imagery Experiment to Study Trauma-related Dissociation in Borderline Personality Disorder
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Defense styles in Intermittent Explosive Disorder.

Alexander A Puhalla1, Michael S McCloskey1, Lauren J Brickman1

  • 1Department of Psychology, Temple University, Philadelphia, PA, USA.

Psychiatry Research
|April 18, 2016
PubMed
Summary
This summary is machine-generated.

Individuals with Intermittent Explosive Disorder (IED) rely more on immature defense mechanisms and less on mature ones. This study highlights distinct defense style differences in IED patients compared to personality disorder and healthy groups.

Keywords:
Defense stylesDefensiveIntermittent Explosive DisorderPersonality disorderStyle

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Area of Science:

  • Psychiatry
  • Psychology
  • Defense Mechanisms

Background:

  • Overreliance on immature defense mechanisms is linked to psychiatric disorders.
  • Defense styles in Intermittent Explosive Disorder (IED) have not been previously studied.
  • IED is characterized by difficulties in controlling anger and aggression.

Purpose of the Study:

  • To investigate the defense styles of individuals diagnosed with IED.
  • To compare the defense mechanisms of IED patients with those of personality disorder (PD) patients and healthy volunteers (HV).

Main Methods:

  • Utilized the Defense Style Questionnaire (DSQ), a self-report measure.
  • Compared defense style scores (mature, immature, neurotic) across three groups: IED, PD, and HV.
  • Employed hierarchical regression to identify unique discriminators of IED.

Main Results:

  • Individuals with IED scored significantly higher on immature defense styles compared to both PD and HV groups.
  • IED participants demonstrated significantly lower scores on mature defense mechanisms than comparison groups.
  • Higher "acting out" and lower "sublimation" scores uniquely identified participants with IED.

Conclusions:

  • IED is associated with a distinct pattern of immature and less mature defense styles.
  • Defense mechanism profiles may serve as potential diagnostic or therapeutic targets for IED.
  • Further research is warranted to explore the clinical implications of these findings in IED management.