Journal List > J Korean Acad Psychiatr Ment Health Nurs > v.23(3) > 1058004

Kong and Bae: Discriminating Power of Dissociation in Patients with Psychological Trauma

Abstract

Purpose

The purpose of the study was to identify the discriminating power of dissociation as defined by depression, obsession, and Minnesota Multiphasic Personality Inventory(MMPI; psychopathology) in patients with psychological trauma.

Methods

Participants were patients (N=114) from "S" clinic for psychological trauma. Data were collected from April to June 2014 through semi-structured interviews and self-reports using a modified Lifetime Incidence of Traumatic Events, Dissociative Experience Scale (DES), Beck Depression Inventory-2, Maudsley Obsessional Compulsive Inventory, and MMPI-2.

Results

Participants were grouped in to two groups depending on DES scores; dissociative (n=15) and non-dissociative (n=99). Depression, F-scale (infrequency), Ma (Hypomania), and Hs (Hypochondriasis) scale of MMPI correctly discriminated 86.8% of the sample. There were also significant differences in Obsession, K-scale (korrection), D (Depression), Hy (Hysteria), Pd (Psychopathic Deviate), Pa (Paranoia), Pt (Psychasthenia), Sc (Schizophrenia), Si (Social Introversion) scales of MMPI between two groups, but they were not significant discriminant factors.

Conclusion

Future interventions for patients with high levels of dissociation and psychological trauma should focus on the prevention of suicide and chronic dissociation by assessing depression-related factors; suicidal behavior, impulsivity, aggression, and alexithymia. Therapists should also interpret patients' MMPI profiles carefully, especially in the presence of an extremely elevated F-scale.

Figures and Tables

Table 1
Demographic Characteristics and Frequencies of Trauma of the Subjects (N=114)
jkapmhn-23-125-i001
Table 2
Mean Differences in Predictor Variables between Two Groups (N=114)
jkapmhn-23-125-i002

BDI=Beck depression inventory; MOCI=Maudsley obsessional-compulsive inventory; MMPI=Minnesota multiphasic personality inventory; L=Lie; F=Infrequency; K=Korrection; Hs=Hypochondriasis; D=Depression; Hy=Hysteria; Pd=Psychopathic deviate; Mf=Masculinity-femininity; Pa=Paranoia; Pt=Psychasthenia; Sc=Schizophrenia; Ma=Hypomania; Si=Social introversion; DES=Dissociative Experience Scale.

*10~20%=0, 30~50%=1, 60~80%=2, 90~100%=3.

Table 3
Canonical Discriminant Functions (N=114)
jkapmhn-23-125-i003
Table 4
Discriminant Loadings and Standardized Weights (N=114)
jkapmhn-23-125-i004

BDI=Beck depression inventory; MMPI=Minnesota multiphasic personality inventory; F=Infrequency; Hs=Hypochondriasis; Pd=Psychopathic Deviate; Ma=Hypomania; Mf=Masculinity-Femininity.

Table 5
Classification Matrix for Two Group Discriminant Analysis
jkapmhn-23-125-i005

Notes

This work was supported by the Soonchunhyang University Research Fund.

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