Psychopathology of Dissociative Disorders

Study Description

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Study Description Study Design Groups and Cohorts Outcome Measures Eligibility Criteria Contacts and Locations More Information

Brief Summary:

The goal of the project is to investigate the prevalence of dissociative disorders in psychiatric inpatients in Taiwan. Relevant clinical issues, including common psychiatric comorbidity (e.g., positive psychotic symptoms), associated psychosocial factors (e.g., negative life events, perceived parenting style), and neuro-cognitive underpinning (e.g., executive functions) were also targeted. Standardized interview schedules, self-report scales, and cognitive tasks will be applied. The investigators hypothesized that dissociative disorders would be associated with positive psychotic symptoms, a history of early interpersonal adversity, and enhanced executive functions.

Condition or disease
Dissociative Disorders

Detailed Description:

Though formally included in the Diagnostic and Statistic Manual of Mental Disorders since 1980, dissociation had once been considered as a rare psychiatric disturbance. With standardized structured interview, however, recent empirical studies showed that in average 9 percent of participants in general population, 10 percent in psychiatric outpatients, and 15 percent in psychiatric inpatients receive the diagnosis of a dissociative disorder. In Taiwan few attempts have been made for systematic investigation of dissociative disorders. Little has been known about the characteristics, prevalence, and associated features of Taiwanese patients with a dissociative disorder. The goal of the project is to investigate the prevalence of dissociative disorders in psychiatric inpatients in Taiwan. Relevant clinical issues, including common psychiatric comorbidity (e.g., positive psychotic symptoms), associated psychosocial factors (e.g., negative life events, perceived parenting style), and neuro-cognitive underpinning (e.g., executive functions) were also targeted. Standardized interview schedules, self-report scales, and cognitive tasks will be applied and the assessment will be held by the licensed clinical psychologist who receive training on the assessment and treatment of dissociative disorders. The results may enhance the understanding about the clinical features of dissociative disorders in Taiwan.

Study Design

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Study Description Study Design Groups and Cohorts Outcome Measures Eligibility Criteria Contacts and Locations More Information

Study Type :	Observational
Estimated Enrollment :	150 participants
Observational Model:	Case Control
Time Perspective:	Cross-Sectional
Official Title:	A Psychopathological Study of Dissociative Disorders in Psychiatric Inpatients at an Acute Stage
Study Start Date :	March 2011
Estimated Primary Completion Date :	August 2012
Estimated Study Completion Date :	August 2012

Groups and Cohorts

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Study Description Study Design Groups and Cohorts Outcome Measures Eligibility Criteria Contacts and Locations More Information

Group/Cohort
psychiatric inpatients, regardless of clinical diagnoses

Outcome Measures

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Study Description Study Design Groups and Cohorts Outcome Measures Eligibility Criteria Contacts and Locations More Information

Eligibility Criteria

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Study Description Study Design Groups and Cohorts Outcome Measures Eligibility Criteria Contacts and Locations More Information

Ages Eligible for Study:	20 Years to 60 Years (Adult)
Sexes Eligible for Study:	All
Accepts Healthy Volunteers:	No
Sampling Method:	Non-Probability Sample

Study Population

psychiatric inpatients in a acute stage

Criteria

Inclusion Criteria:

• being stable and appropriate for interviews

Exclusion Criteria:

• with organic syndromes
• mentally retarded (FIQ <80)
• cannot communicate in Mandarin Chinese

Contacts and Locations

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Study Description Study Design Groups and Cohorts Outcome Measures Eligibility Criteria Contacts and Locations More Information

Contacts

Contact: Hai-Gwo Hwu, MD	886-2-23123456 ext 66785	haigohwu@ntu.edu.tw
Contact: Chui-De Chiu, MS	886-968-222-966	d97227202@ntu.edu.tw

Locations

Taiwan
Department of Psychiatry, National Taiwan University	Recruiting
Taipei, Taiwan
Contact: Hai-Gwo Hwu, MD 886-2-23123456 ext 66785 haigohwu@ntu.edu.tw
Contact: Chui-De Chiu, MS 886-2-968-222966 d97227202@ntu.edu.tw

Sponsors and Collaborators

National Taiwan University Hospital

Investigators

Principal Investigator:	Hai-Gwo Hwu, MD	National Taiwan University Hospital

More Information

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Study Description Study Design Groups and Cohorts Outcome Measures Eligibility Criteria Contacts and Locations More Information

Publications:

Xiao Z, Yan H, Wang Z, Zou Z, Xu Y, Chen J, Zhang H, Ross CA, Keyes BB. Trauma and dissociation in China. Am J Psychiatry. 2006 Aug;163(8):1388-91.

Draijer N, Langeland W. Childhood trauma and perceived parental dysfunction in the etiology of dissociative symptoms in psychiatric inpatients. Am J Psychiatry. 1999 Mar;156(3):379-85.

Chiu CD, Yeh YY, Huang YM, Wu YC, Chiu YC. The set switching function of nonclinical dissociators under negative emotion. J Abnorm Psychol. 2009 Feb;118(1):214-22. doi: 10.1037/a0014654.

Responsible Party:	Hai-Gwo Hwu, Visiting physician, Professor, National Taiwan University Hospital
ClinicalTrials.gov Identifier:	NCT01388140 History of Changes
Other Study ID Numbers:	201012003RB
First Posted:	July 6, 2011
Last Update Posted:	July 6, 2011
Last Verified:	January 2011

Keywords provided by National Taiwan University Hospital:

dissociation; psychosis; trauma; parenting; executive functions

Additional relevant MeSH terms:

Disease; Dissociative Disorders; Conversion Disorder	Pathologic Processes; Mental Disorders; Somatoform Disorders