Kazuhiko Iwata

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BACKGROUND In Japan, Job assistance for SMI have been not active. Compared with mental retardation, employment rate of SMI was low. The needs of the effective job assistance for SMI are growing. The purpose of this study was to determine the effectiveness of the combination approach of Cognitive Remediation (CR) and Supported Employment (SE) in clinical(More)
AIM The present study aimed to test the construct validity and internal consistency of the Social Cognition Screening Questionnaire (SCSQ) (Japanese version). METHODS We first tested whether the subscale scores and the total score of the SCSQ could discriminate patients with schizophrenia from normal controls. Next, we tested the internal consistency.(More)
We conducted a noninvasive near-infrared spectroscopy (NIRS) study using the game of rock, paper, scissors (RPS) as a simple neurocognitive task for the prefrontal cortex (PFC) in 15 healthy volunteers. We employed an opposite "to lose" RPS task coupled with a normal "to win" RPS task, since the former requires inhibition of behavior, one of the most(More)
AIMS Facial emotion perception is considered to provide a measure of social cognition. Numerous studies have examined the perception of emotion in patients with schizophrenia, and the majority has reported impaired ability to recognize facial emotion perception. We aimed to investigate the correlation between facial expression recognition and other domains(More)
In this study, we investigated speaker’s intentions that the listeners perceive through subtly different sentence-final intonations. Approximately 2,000 sentence utterances were recorded and the fundamental frequency (F0) contours at the last vowel of those sentences were classified through one of the standard clustering algorithms. There found various F0(More)
Although a small number of studies have investigated sex differences in the associated features of high-functioning autism spectrum disorders (HFASDs), they have failed to provide consistent findings. We sought to examine sex differences in 5–9-year-old females and males with HFASDs within a narrow range of ages before adolescence in order to identify the(More)
Many researchers and practitioners have suggested that improving the cognition of patients with schizophrenia is very important for achieving true "recovery". There is a strong relationship between cognitive function and social functioning; cognitive function affects functional outcomes of schizophrenic patents. Therefore, rehabilitation methods to improve(More)