Empirical evaluation of language disorder in schizophrenia

Massoud Stephane, Giuseppe Pellizzer, Charles R. Fletcher, Kate McClannahan

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

Objective: Studies of the content of speech and of verbal hallucinations in schizophrenia point to dysfunction at multiple levels of language. In this study, we empirically evaluated language processes. Methods: We examined the performance of 22 schizophrenia patients and 11 healthy control subjects with procedures designed to explore the sublexical, lexical, semantic, syntactic and discourse levels of language processing. Results: Schizophrenia patients exhibit impairment in the recognition of incorrect, but not correct, linguistic stimuli at all but the sublexical level of language processing. The patients were not impaired in the recognition of nonlinguistic stimuli. Conclusion: This language-specific differential impairment could explain speech abnormalities in schizophrenia. The nonrecognition of incorrect linguistic information would prevent patients from correcting the abnormal speech they may occasionally produce. A model of decreased power of linguistic computations (reduced number of operations) adequately accounts for this differential impairment.

Original languageEnglish (US)
Pages (from-to)250-258
Number of pages9
JournalJournal of Psychiatry and Neuroscience
Volume32
Issue number4
StatePublished - Jul 2007
Externally publishedYes

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Language Disorders
Schizophrenia
Language
Linguistics
Hallucinations
Semantics
Healthy Volunteers

Keywords

  • Language
  • Schizophrenia

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Neuroscience(all)

Cite this

Stephane, M., Pellizzer, G., Fletcher, C. R., & McClannahan, K. (2007). Empirical evaluation of language disorder in schizophrenia. Journal of Psychiatry and Neuroscience, 32(4), 250-258.

Empirical evaluation of language disorder in schizophrenia. / Stephane, Massoud; Pellizzer, Giuseppe; Fletcher, Charles R.; McClannahan, Kate.

In: Journal of Psychiatry and Neuroscience, Vol. 32, No. 4, 07.2007, p. 250-258.

Research output: Contribution to journalArticle

Stephane, M, Pellizzer, G, Fletcher, CR & McClannahan, K 2007, 'Empirical evaluation of language disorder in schizophrenia', Journal of Psychiatry and Neuroscience, vol. 32, no. 4, pp. 250-258.
Stephane M, Pellizzer G, Fletcher CR, McClannahan K. Empirical evaluation of language disorder in schizophrenia. Journal of Psychiatry and Neuroscience. 2007 Jul;32(4):250-258.
Stephane, Massoud ; Pellizzer, Giuseppe ; Fletcher, Charles R. ; McClannahan, Kate. / Empirical evaluation of language disorder in schizophrenia. In: Journal of Psychiatry and Neuroscience. 2007 ; Vol. 32, No. 4. pp. 250-258.
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