Cluster analysis of MCMI and MCMI-II on chronic PTSD victims

Lee A. Hyer · Harry Davis · Patrick A. Boudewyns

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Psychological Testing and Assessment Psychoanalysis and Psychopathology Research Posttraumatic Stress Disorder Research

Abstract

A cluster analysis was used to identify groups of inpatients with confirmed post-traumatic stress disorder (PTSD) due to combat. In Study 1 the MCMI was administered to 256 subjects, in addition to the MMPI, PTSD measures, and background variables. Three clusters resulted: a Traumatic Personality (8-2), Schizoid Influence (8-2-1), and Antisocial Influence (8-6). Comparison on the MCMI symptom scales, MMPI, and PTSD scales showed that the Antisocial Influence cluster was "healthier" on all measures. The Schizoid Influence was most psychopathological. In Study 2 the MCMI-II was administered to 136 new subjects who met the same criteria as in Study 1. Four clusters resulted: Global (1-2-6A-6B-8A-8B), Subclinical (1), Aggressive (6A-6B-8A), and Detached/Self-defeating (1-2-8A-8B).

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References

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2003Multidimensional Personality Questionnaire profiles of veterans with traumatic combat exposure: Externalizing and internalizing subtypes.2008The internalizing and externalizing structure of psychiatric comorbidity in combat veterans 2004Psychological Assessment of Adult Posttraumatic States: Phenomenology, Diagnosis, and Measurement 1995Exposure therapy for combat-related PTSD: A critical review

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