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open access
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E-ISSN : 2733-4538
The purpose of this study was to explore the subgroups of K-WAIS-IV profiles among psychiatric patients with and without psychotic symptoms using a data-driven approach and to identify their clinical characteristics. Latent profile analyses were conducted using K-WAIS-IV performance data from 218 patients with psychotic disorders and 232 patients with non-psy chotic affective disorders. Subgroups were then compared on their MMPI-2-RF scores, diagnosis, and demographic vari ables. A three-cluster solution including a “cognitively normal,” a “selectively impaired,” and a “globally impaired” group was selected for both psychotic and non-psychotic patients. However, the profiles of the selectively impaired group differed be tween the psychotic and non-psychotic patients. In psychotic patients, the selectively impaired group showed lowered perfor mance on general intelligence and all other index scores except for VCI, while the non-psychotic patients showed average performance on WMI as well as VCI. Regarding the MMPI-2-RF results, in general, patients with more pervasive cognitive impairment and those with psychotic disorders rather than non-psychotic disorders tended to report significantly higher scores across various scales. However, on some scales, the profiles of subgroups were found to differ between psychotic and non-psychotic patients. Based on these results, the implications and limitations of the study are discussed.
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