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Related Experiment Videos

Semantic and phonological priming in schizophrenia

M Spitzer1, I Weisker, M Winter

  • 1Psychiatrische Universitätsklinik, Heidelberg, Germany.

Journal of Abnormal Psychology
|August 1, 1994
PubMed
Summary

Schizophrenic patients with thought disorder (TD) show increased semantic priming, suggesting difficulties inhibiting inappropriate word associations. This may stem from altered activation or inhibition processes in the brain.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Psychiatry

Background:

  • Thought disorder (TD) is a core symptom of schizophrenia.
  • Understanding the cognitive mechanisms underlying TD is crucial for treatment.
  • Previous research suggests abnormalities in associative processes in schizophrenia.

Purpose of the Study:

  • To investigate the role of semantic and phonological associations in thought disorder (TD) in schizophrenic patients.
  • To compare cognitive priming effects between schizophrenic patients with and without TD, and healthy controls.

Main Methods:

  • A lexical decision task was employed with 70 schizophrenic patients and 44 healthy controls.
  • Participants recognized words primed by semantically, phonologically, or non-associated words.

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  • Schizophrenic patients were subgrouped into TD and non-TD based on clinical assessment.

    • Main Results:

    • TD schizophrenic patients demonstrated significantly greater semantic priming compared to non-TD patients and controls.
    • Phonological priming effects varied depending on stimulus onset asynchrony (SOA).

    Conclusions:

    • Results support the hypothesis of increased activation or decreased inhibition in spreading semantic and phonological associations in TD schizophrenic patients.
    • These findings offer insights into the cognitive underpinnings of thought disorder in schizophrenia.