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- Title
Performance on the Wechsler Adult Intelligence Scale- III in Japanese patients with schizophrenia.
- Authors
Fujino, Haruo; Sumiyoshi, Chika; Sumiyoshi, Tomiki; Yasuda, Yuka; Yamamori, Hidenaga; Ohi, Kazutaka; Fujimoto, Michiko; Umeda‐Yano, Satomi; Higuchi, Arisa; Hibi, Yumiko; Matsuura, Yukako; Hashimoto, Ryota; Takeda, Masatoshi; Imura, Osamu
- Abstract
Aim Patients with schizophrenia have been reported to perform worse than non-schizophrenic populations on neuropsychological tests, which may be affected by cultural factors. The aim of this study was to examine the performance of a sizable number of patients with schizophrenia on the Japanese version of the Wechsler Adult Intelligence Scale- III ( WAIS-III) compared with healthy controls. Methods Performance on the WAIS-III was evaluated in 157 Japanese patients with schizophrenia and in 264 healthy control subjects. Results All IQ scores and four indices from the WAIS-III were impaired for patients with schizophrenia compared with healthy controls. Processing Speed was markedly disturbed, approximately 2 SD below that of the healthy control group. Among the 13 subtests, Comprehension ( z = −1.70, d = 1.55), Digit Symbol Coding ( z = −1.84, d = 1.88), and Symbol Search ( z = −1.85, d = 1.77) were profoundly impaired relative to the healthy controls. Conclusion These results indicate that the pattern and degree of impairment, as evaluated by the WAIS-III, in Japanese patients are similar to those previously reported in English-speaking patients and that the deficits of some neuropsychological domains relevant to functional outcomes are universally characteristic of schizophrenia.
- Subjects
SCHIZOPHRENIA; MENTAL illness; WECHSLER Adult Intelligence Scale; NEUROPSYCHOLOGICAL tests; CLINICAL neuropsychology; CONTROL groups
- Publication
Psychiatry & Clinical Neurosciences, 2014, Vol 68, Issue 7, p534
- ISSN
1323-1316
- Publication type
Article
- DOI
10.1111/pcn.12165