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Action and object naming in schizophrenia.

Maria Kambanaros1, Lambros Messinis, Vassilis Georgiou

  • 1Department of Humanities, Speech and Language Therapy Program, European University of Cyprus, Nicosia, Cyprus.

Journal of Clinical and Experimental Neuropsychology
|May 7, 2010
PubMed
Summary
This summary is machine-generated.

Patients with schizophrenia struggle with naming objects and actions, finding action names harder to retrieve. This suggests difficulties linking meaning to words, impacting language processing in schizophrenia.

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Published on: November 19, 2014

Area of Science:

  • Cognitive Neuroscience
  • Psycholinguistics
  • Clinical Psychology

Background:

  • Schizophrenia is associated with impaired verbal fluency.
  • Previous research has not specifically investigated verb-noun differences in picture naming for schizophrenia patients.
  • Understanding semantic and lexical access deficits is crucial for characterizing cognitive impairments in schizophrenia.

Purpose of the Study:

  • To compare object and action naming abilities in schizophrenia patients versus healthy controls.
  • To investigate potential differences in retrieving action versus object names.
  • To explore the nature of semantic and lexical access deficits in schizophrenia.

Main Methods:

  • A picture-naming task was administered to 20 adult schizophrenia patients and 20 demographically matched healthy controls.
  • Comprehension of object and action names was assessed.
  • Naming accuracy and error types were analyzed to evaluate lexical semantic access and retrieval.

Main Results:

  • Schizophrenia patients exhibited poorer object and action naming compared to controls.
  • Comprehension of both object and action names was intact in patients.
  • Action names were significantly more difficult to retrieve than object names in schizophrenia patients.

Conclusions:

  • Schizophrenia patients have intact conceptual-semantic stores but difficulties mapping semantics to the lexicon.
  • Action-naming impairments in schizophrenia may stem from semantic or postsemantic processing issues.
  • Findings have implications for understanding language neurobiology, frontal lobe function, and cognitive deficits in schizophrenia.