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Korean J Schizophr Res > Volume 18(2); 2015 > Article
Korean Journal of Schizophrenia Research 2015;18(2):51-58.
DOI: https://doi.org/10.16946/kjsr.2015.18.2.51    Published online October 31, 2015.
Symptomatic Conceptualization of Disorganized Speech in Patients with Schizophrenia.
Jung Min Yu, Bomi Kim, Kyung Min Lee, Eun Young Jang, Hyun Jin Jung, Kang Uk Lee, Joonho Choi, Seon Cheol Park
1Department of Psychiatry, Chuncheon National Hospital, Chuncheon, Korea.
2Department of Psychiatry, Yong-In Mental Hospital, Yongin, Korea. cogito-ergo-sum@hanmail.net
3Department of Psychiatry, Hanyang University Guri Hospital, Guri, Korea.
4Department of Psychiatry, Kangwon National University School of Medicine, Chuncheon, Korea.
5Department of Psychiatry, Hanyang University College of Medicine, Seoul, Korea.
6Institute of Mental Health, Hanyang University, Seoul, Korea.
Our study aimed to present the distinctive correlates of disorganized speech in patients with schizophrenia, using the Scale for the Assessment of Thought, Language and Communication (TLC scale).
We compared the formal thought and other clinical characteristics between schizophrenia inpatients with (n=82) and without (n=80) disorganized speech. Psychometric scales including the TLC scale, Brief Psychiatric Rating Scale (BPRS), Young Mania Rating Scale (YMRS), Calgery Depression Scale for Schizophrenia (CDSS) and Word Fluency Test (WFT) were used. The presence or absence of disorganized speech was established using transformed dummy variable of score on the Clinician-Rated Dimension of Psychosis Symptom Severity (CRDPSS).
After adjusting the effects of age, sex and total scores on the BPRS, YMRS and WFT, the subjects with disorganized speech presented significantly higher score on the poverty of contents of speech (p=0.001), distractible speech (p<0.0001), tangentiality (p<0.0001), derailment (p<0.0001), incoherence (p<0.0001), ilogicality (p<0.0001), word approximations (p=0.003), loss of goal (p<0.0001), blocking (p=0.006) and self-reference (p=0.002) items than those without disorganized speech. With defining the mentioned item scores as covariates, binary logistic regression model predicted that derailment (p=0.0001) and poverty of contents of speech (p<0.0001) were significant independent-correlates of disorganized speech in patients with schizophrenia.
Our findings suggest that derailment and poverty of contents of speech are significant correlates of disorganized speech in patients with schizophrenia. Our findings might be used to evaluate disorganized speech in patients with schizophrenia efficiently.
Key Words: Disorganized speech · Formal thought disorder · Derailment · Poverty of contents of speech · Schizophrenia


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