| Co-Investigator(Kenkyū-buntansha) |
NANKAI Masahiro Staff Psychiatrist, Department of Neuropsychiatry, Faculty of Medicine, Tokyo Me, 医学部, 助手 (20218069)
SHIBUYA Haruo Assistant Professor, Department of Neuropsychiatry, Faculty of Medicine, Tokyo M, 医学部, 講師 (10158959)
OKUBO Yoshiro Staff Psychiatrist, Department of Neuropsychiatry, Faculty of Medicine, Tokyo Me, 医学部, 助手 (20213663)
MATSUURA Masato Staff Psychiatrist, Department of Neuropsychiatry, Faculty of Medicine, Tokyo Me, 医学部, 助手 (60134673)
沈 漁邨 北京医科大学, 精神衛生研究所, 教授
SHEN Yu-cun Professor, Institute of Mental Health, Beijing Medical University
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| Research Abstract |
As the first phase of this study, an international epidemiological study of children with emotional-behavioural problems was performed. The subjects in Japan were 2,638 primary school children (PS) and 1,091 secondary school children (SS) from the general population, and 65 primary school children (PSP) and 176 secondary school children (SSP) who refered to psychiatric clinics. In China, 2,432 primary school children (PS) were investigated. The prevalence of deviant behaviour children who showed a high-score on parent's scale was 12.2%(PS), 6.6%(SS), 58.5%(PSP), and 39.8%(SSP) in Japan, 7.0%(PS) in China. The prevalence of deviance with teacher's scale was 3.9%(PS), 2.7%(SS), 90.8%(PSP), and 29.8%(SSP) in Japan, 8.3%(PS) in China. Both in Japan and China, boys were more deviant than girls and those with poor school achievement were more deviant. In China, family background was associated strongly with deviant behaviour of children, but this could not apply in Japan. Both in Japan and China, no association was found between sibship size or birth order and deviant behaviour.
As the last phase of this study, an electroencephalographic study was performed concerning normal behaviour children (N) and deviant behaviour children (D) from the general population, and attention deficit disorder from psychiatric clinics (ADD) in Japan and China. Both in Japan and China, frequency histogram pattern did not differ between N and D, and that of ADD shifted to slower frequency band. As for various EEG measures, there were no differences between N and D, and slow wave measures were higher and alpha and beta wave measures were lower in ADD than in N and D. From overall results, the deviant behaviour children from the general population seemed to stem from socio-psychological causal factors, and the ADD seems to arise from biological factor such as brain maturation lag.
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