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Tangential speech

Communication disorder

Communication disorder

Tangential speech or tangentiality is a communication disorder in which the train of thought of the speaker wanders and shows a lack of focus, never returning to the initial topic of the conversation. It commonly occurs in situations where an individual experiences high anxiety, as a manifestation of acute psychosis, dementia, or states of delirium. It is less severe than logorrhea and may be associated with the middle stage in dementia.

Some adults with right hemisphere brain damage exhibit tangential speech. Those who exhibit tangential speech may also have related symptoms, such as seemingly inappropriate, self-centered social responses and deteriorations in conversation capabilities (including maintaining appropriate eye contact and staying on topic).

Definition

The term refers simplistically to a thought disorder shown from speech with a lack of observance to the main subject of discourse, such that a person whilst speaking on a topic deviates from the topic. Further definition is of speech that deviates from an answer to a question that is relevant in the first instance but deviates from the relevancy to related subjects not involved in a direct answering of the question. In the context of a conversation or discussion the communication is a response that is ineffective in that the form is inappropriate for adequate understanding. The person's speech seems to indicate that their attention to their own speech has perhaps in some way been overcome during the occurrence of cognition whilst speaking, causing the vocalized content to follow thought that is apparently without reference to the original idea or question; or the person's speech is considered evasive in that the person has decided to provide an answer to a question that is an avoidance of a direct answer.

History

The earlier phenomenological description (Schneider et al. 1930) allowed for further definition on the basis of formal characteristic rather than content, producing later practice relying upon clinical assessment (Andreasen 1979). The term has undergone a redefinition to refer only to a person's speech in response to a question, and to provide the definition separation from the similar symptoms loosening of association and derailment (Andreasen 1979).

Other

According to the St. Louis system for the diagnosis of schizophrenia, tangentiality is significantly associated with a low IQ prior to diagnosis (AU Parnas et al 2007).

References

References

  1. ''Forensic Aspects of Communication Sciences and Disorders'' by Dennis C. Tanner 2003 {{ISBN. 1-930056-31-1 page 289
  2. G. David Elkin. (1999). "Introduction to clinical psychiatry". McGraw-Hill Professional - 1999.
  3. It is, however, more severe than [[circumstantial speech]], in which the speaker wanders but eventually returns to the topic.''Crash Course: Psychiatry'' by Julius Bourke, Matthew Castle, Alasdair D. Cameron 2008 {{ISBN. 0-7234-3476-X page 255
  4. ''Introduction to Neurogenic Communication Disorders'' by Robert H. Brookshire 1997 {{ISBN. 0-323-04531-6 page 393
  5. ''Perspectives on Treatment for Communication Deficits Associated With Right Hemisphere Brain Damage'' by Margaret Lehman Blake 2007 {{ISSN. 1058-0360 page 333
  6. (2005-02-17 }} {{ISBN). "Schizophrenic speech: making sense of bathroots and ponds that fall in doorways - 210 pages". Cambridge University Press, 2005.
  7. "Building coherence : A framework for exploring the breakdown of links across clause boundaries in schizophrenia". Martinos Center for Biomedical Imaging.
  8. 0-8385-8434-9
  9. Jeffrey A. Lieberman, T. Scott Stroup, [[Diana Perkins. 1-58562-401-2
  10. S.J.Wood, N.B.Allen & C.Pantelis (Editors) 2009 - ''The Neuropsychology of Mental Illness'' [http://www.nmr.mgh.harvard.edu/kuperberglab/publications/chapters/Kuperberg&Kreher_HndbkNeuropsychMentalDisChapter6_2009.pdf Cambridge University Press] {{webarchive. link. (2016-03-04 Retrieved 2012-01-17 {{ISBN). 978-0-521-86289-9
  11. 0-19-506615-4
  12. (1982). "A comparison of nine systems to diagnose schizophrenia". Psychiatry Research.
  13. (2007). "Premorbid IQ varies across different definitions of schizophrenia". World Psychiatry.
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aphasias communication-disorders symptoms-and-signs-of-thought-disorder symptoms-of-schizophrenia dementia delirium
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