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Featured researches published by Koichi Naka.


Mental Health, Religion & Culture | 2004

Attacked by the gods or by mental illness? Hybridizing mental and spiritual health in Okinawa

Matthew Allen; Koichi Naka; Hiroshi Ishizu

In 1972, the reversion to Japanese rule brought with it many changes for Okinawans, among them the widespread introduction of psychiatry. Psychiatry was not well received at first due to the extensive presence of shamans, who had traditionally dealt with Okinawans’ spiritual and psychological afflictions. Both psychiatrists and shamans claimed to be able to heal those who were labelled ‘mentally ill’ or ‘mentally disordered’ by psychiatrists. This conflict between systems over the body of the patient/client is relevant to debates today about both the perceived value of generic mental health diagnosis and treatment regimes compared with indigenous healing,1 and the question of isolating how markers or symbols of identity are employed in patients’ help-seeking choices. We examine three cases from the 1970s of patients who were diagnosed as suffering from both schizophrenia and an indigenous condition known as kami daarii.


Psychiatry and Clinical Neurosciences | 1998

Assessment of psychosocial stressors and maladjustment among foreign students of the University of the Ryukyus.

Maxine Randall; Koichi Naka; Kazuyoshi Yamamoto; Haruo Nakamoto; Hajime Arakaki; Chikara Ogura

An extensive survey of problems encountered by foreign students of the University of the Ryukyus and the resulting levels of stress was carried out in order to determine the main stressors hindering academic progress and personal adjustment. Subjectively perceived stress levels after arrival in Japan were obtained from 134 subjects through a comprehensive questionnaire for reporting specific stressors. The 30‐item General Health Questionnaire (GHQ) was included to assess mental health state. Differences in scores by area of origin were also determined for the total GHQ scores and its sub‐scales. The GHQ results showed that regardless of length of time in Japan, more than 60% of the subjects scored within a range usually indicative of a mental health risk. Mean scores by area of origin showed a 50% reduction over time for non‐Chinese Asians and North American/Europeans, but only a reduction of 1.1% or less for Chinese, Latin American, Middle/Near Eastern and African subjects. Limitations in achievement of academic goals were reported by the greatest number of students as causing moderate to excessive stress (57.5%); most frequently reported causes were language inadequacy (55.2%), reference materials unavailable (34.3%), unfamiliarity with Japanese study methods (32.1%), and inadequate guidance from teachers/advisors (26.9%). Various social, personal and daily life problems in the non‐academic setting were also reported as causing high stress levels. Most of the stressors identified are not considered inevitable and point toward directions to pursue in preventive strategies in mitigating psychological distress and maladjustment of students.


Psychiatry and Clinical Neurosciences | 1996

Longitudinal change in youth suicide mortality in Okinawa after World War II: a comparative study with mainland Japan.

Takayuki Kageyama; Koichi Naka

Abstract Okinawa prefecture has a unique socio‐cultural status in Japan including the experience of having been occupied by the USA from the end of World War II to 1972. In this study, the longitudinal change in youth suicide mortality for those aged 10–29 years in Okinawa (1960–90) was compared with that for the same sex‐age groups in mainland Japan (1950–90). In contrast with mainland Japan, no dramatic change in the youth suicide mortality was observed in Okinawa in the 1960s. The rise and fall of teenage suicide mortality in Okinawa during the 1970–80s might be associated with ‘reversion anxiety’, rather than with the traumatic experience of World War II itself. This seems to be inconsistent with previous speculation regarding the change in youth suicide mortality in mainland Japan. The suicide mortality for men aged 20–29 in Okinawa was significantly higher than that for the same sex‐age group in mainland Japan through the observed period. The possible effects of the USA occupation, economic anomie or migration on the suicide in Okinawa should be further examined.


International Journal of Social Psychiatry | 1985

Yuta (shaman) and community mental health on Okinawa.

Koichi Naka; Seijun Toguchi; Toshihiro Takaishi; Hiroshi Ishizu; Yuji Sasaki


The Japanese Journal of Personality | 2004

Nurse burn-out and five-factor personality traits

Hiroto Fukushima; Koichi Naka; Hiroshi Ishizu; Takao Yokota; Minoru Takakura


心身医学 | 2001

Related Factors Inducing ICU-syndrome and Personality Traits from the Psychosomatic Viewpoint

Hiroshi Ishizu; Noriyasu Shimoji; Takao Yokota; Syunji Ura; Naoko Yonamine; Toshihiro Shimoji; Nobuhiko Yanagida; Masao Nakamoto; Seikichi Higa; Masafumi Akisaka; Koichi Naka; Noburu Yoshida


心身医学 | 1999

Psychosomatic Treatments for Male Sexual Dysfunctions of Middle and Old Age : Psychosomatics concerning Male Gender Role among Middle and Old Age

Hiroshi Ishizu; Takao Yokota; Seikichi Higa; Koichi Naka; Toshihiro Shimoji; Kan Sobajima; Koji Moriyama; Kazuhisa Oshiro; Masao Nakamoto; Noburu Yoshida


Japanese Journal of Health and Human Ecology | 1999

An Examination of the Relationship between Attitude toward Suicide and Views on Life and Death among University Students

Takao Yokota; Hiroshi Ishizu; Masafumi Akisaka; Koichi Naka; Minoru Takakura; Miyoko Uza; Naoki Nagahama; Ayako Katsu


琉球医学会誌 = Ryukyu Medical Journal | 1998

[総説]Suicide in Okinawa from an international perspective : A consideration of socio-cultural factors

Koichi Naka; Hidemi Todoriki; Takayuki Kageyama; Urban Environment


Archive | 1998

Mental health and comm unity groups

Matthew Allen; Koichi Naka; Seizo Sakihara; Kiyomi Tom; Hiroshi Ishizu; Takao Yokota

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Hiroshi Ishizu

University of the Ryukyus

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Maxine Randall

University of the Ryukyus

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Takayuki Kageyama

Oita University of Nursing and Health Sciences

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Ayako Katsu

University of the Ryukyus

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Chikara Ogura

University of the Ryukyus

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Hajime Arakaki

University of the Ryukyus

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