A Symptom Formation Model of Dissociative Identity Disorder (Multiple Personality Disorder): Multiple personality symptoms as intrapersonal-interidentity amnesia Akio WAKABAYASHI 1 1Department of Psychology, Faculty of Letters, Chiba University Keyword: Multiple personality , Dissociation , Identity , Amnesia , Memory disorder pp.755-762
Published Date 1999/7/15
DOI https://doi.org/10.11477/mf.1405905064
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 Multiple personality disorder is a classical and modern problem in psychiatry. This article is concerned with the psychological interpretation of multiple personality disorder as a manifestation of psychogenic amnesia. The first section briefly reviews the dissociation as a basic disorder of multiple personality disorder from the view point of psychopathological interpretation. Then, dissociation that included multiple personality disorder is examined by a cognitive psychological approach to memory, and it is pointed outthat dissociation is a psychogenic memory disorder accompanied with neurological dysfunction. This indicates the possibility that multiple personality is a special case of memory disorder. Finally, it is pointed out that neurophysiological investigations of dissociative and multiple personality disorder showed that the limbic system is related to basic dysfunction of these disorders. Consequently, it may be concluded from psychopathological, cognitive psychological, andneurophysiological investigations that if one has innately high hypnotic susceptibility, and suffers heavily from traumatic experiences before and after the formation of self consciousness, then symptoms of intrapersonal-interidentity amnesia i. e. multiple personality disorder will develop.

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