Toshimasa Maruta

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OBJECTIVE To examine the conceptualizations held by psychiatrists and psychologists around the world of the relationships among mental disorders in order to inform decisions about the structure of the classification of mental and behavioral disorders in World Health Organization's International Classification of Diseases and Related Health Problems 11th(More)
The authors measured urinary free cortisol and urinary 3-methoxy-4-hydroxyphenylglycol (MHPG) levels in 24 severely depressed patients and 22 normal control subjects. Urinary free cortisol levels were significantly higher in the depressed patients than in the control subjects, but mean urinary MHPG levels were not significantly different in these two(More)
Enhancing clinical utility is an emphasis of the World Health Organization's development of the mental and behavioural disorders chapter of the next International Classification of Diseases (ICD-11). Understanding how clinicians conceptualize the structure of mental disorders can enable a more clinically intuitive classification architecture that will help(More)
Two hundred patients with chronic pain were treated in an in-patient program in which behavior modification was the major therapeutic modality. The patients were characterized by having had pain of many years' duration, multiple operations, treatment failures, prolonged disability, compensation factors, and dependency on medication. At hospital dismissal,(More)
The Dimensional Assessment of Personality Pathology, Basic Questionnaire (DAPP-BQ) was developed to assess 18 personality traits that provide a systematic representation of personality disorder. This study investigates the reliability and validity of the Japanese version of the DAPP-BQ and the relationship between the DAPP-BQ and Revised NEO Personality(More)
The abuse of prescription drugs is an insidious complication among patients with chronic pain. This study examines cognitive intellectual functions in patients with chronic pain who are using prescribed analgesics, sedatives and hypnotics. A comprehensive battery of psychologic tests measuring intelligence, learning, memory, sensory-perceptual integrity,(More)
The authors found that the mean urinary level of 3-methoxy-4-hydroxyphenylglycol (MHPG) was significantly lower in 20 patients with bipolar manic-depressive or schizoaffective depressions than in either 50 patients with unipolar depressions or 26 age- and sex-matched control subjects. In contrast, the mean MHPG levels in the total group of patients with(More)