The MMPI ‐2 in chronic psychiatric illness

Abstract

While previous studies on the MMPI-2 in patients with schizophrenia and depression have used mixed samples of both early stage and chronic psychiatric patients. Here, it is investigated whether chronicity itself might have a differential effect on the MMPI-2 profiles of these patients and whether demoralization 'associated with long-term illness' affects the scales of the MMPI-2. Thirty long-term patients with schizophrenia, 30 long-term patients with depression, and 30 healthy participants completed the MMPI-2. Groups were compared on Clinical Scales and on the Restructured Clinical (RC) Scales. Patients with schizophrenia differed from patients with depression on 14 MMPI-2 scales and from healthy controls on 10 scales, generally showing mean UT-scores < 65, indicating a subjective experience of (near) normal functioning. Patients with depression differed from healthy controls on 17 scales mostly with UT-scores > 65, indicating impaired functioning. Demoralization was higher in patients with depression than in patients with schizophrenia and both psychiatric groups differed from the healthy control group. It is concluded that long-term patients with depression show impaired functioning and high demoralization, while long-term patients with schizophrenia surprisingly show near normal functioning and less demoralization.

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