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The relationship between formal thought disorder and executive functioning component processes.

John G Kerns1, Howard Berenbaum

  • 1Department of Psychology, University of Illinois at Urbana-Champaign, USA. KernsJ@missouri.edu

Journal of Abnormal Psychology
|August 29, 2003
PubMed
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Deficits in processing context, particularly when combined with interference resolution issues, predict formal thought disorder (FTD) in schizophrenia patients and healthy individuals.

Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Psychiatry

Background:

  • Formal thought disorder (FTD) is a core symptom in schizophrenia, impacting communication.
  • Executive functions, including context processing and interference resolution, are crucial for cognition.
  • The relationship between specific executive function components and FTD requires further elucidation.

Purpose of the Study:

  • To investigate the association between formal thought disorder (FTD) and two executive functions: processing of context and interference resolution.
  • To examine these associations in individuals with schizophrenia and in a healthy control group using an analogue design.

Main Methods:

  • Study 1: Assessed schizophrenia patients on N-back (context processing) and Steinberg probe recognition (interference resolution) tasks, correlating performance with FTD.

Related Experiment Videos

  • Study 2: Employed an analogue design with non-psychiatric participants, simulating context processing (1-back with distraction) and interference resolution (storytelling) deficits to assess FTD.

    • Main Results:

    • Deficits in processing of context were found to predict formal thought disorder in both studies.
    • The impact of context processing deficits on FTD was amplified when interference resolution deficits were also present.
    • These findings were consistent across the schizophrenia patient group and the healthy control analogue group.

    Conclusions:

    • Processing of context deficits are significant predictors of formal thought disorder.
    • The interplay between context processing and interference resolution significantly influences the manifestation of FTD.
    • These findings highlight the role of specific executive functions in the pathophysiology of thought disorder.