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Performance on the W echsler A dult I ntelligence S cale‐ III in J apanese patients with schizophrenia
Author(s) -
Fujino Haruo,
Sumiyoshi Chika,
Sumiyoshi Tomiki,
Yasuda Yuka,
Yamamori Hidenaga,
Ohi Kazutaka,
Fujimoto Michiko,
UmedaYano Satomi,
Higuchi Arisa,
Hibi Yumiko,
Matsuura Yukako,
Hashimoto Ryota,
Takeda Masatoshi,
Imura Osamu
Publication year - 2014
Publication title -
psychiatry and clinical neurosciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.609
H-Index - 74
eISSN - 1440-1819
pISSN - 1323-1316
DOI - 10.1111/pcn.12165
Subject(s) - schizophrenia (object oriented programming) , neuropsychology , wechsler adult intelligence scale , psychology , medicine , psychiatry , audiology , clinical psychology , cognition
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 J apanese version of the W echsler A dult I ntelligence S cale‐ 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 S peed was markedly disturbed, approximately 2 SD below that of the healthy control group. Among the 13 subtests, Comprehension ( z = −1.70, d = 1.55), D igit S ymbol C oding ( z = −1.84, d = 1.88), and S ymbol S earch ( 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 J apanese patients are similar to those previously reported in E nglish‐speaking patients and that the deficits of some neuropsychological domains relevant to functional outcomes are universally characteristic of schizophrenia.