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Disordered thinking and cerebral dysfunction: laterality effects, language, and intellectual functions.

M L Silverstein1, M Harrow, J T Marengo

  • 1Department of Psychology, Long Island University, Brookville, NY 11548, USA.

Archives of Clinical Neuropsychology : the Official Journal of the National Academy of Neuropsychologists
|November 1, 1993
PubMed
Summary
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This study found no link between brain lateralization and thought disorders like bizarre thinking or concreteness. Cognitive deficits in intellectual and arithmetic functions were associated with bizarre thinking, but not concrete thinking or medication status.

Area of Science:

  • Neuroscience
  • Psychiatry
  • Cognitive Psychology

Background:

  • Thought disorders, including bizarre-idiosyncratic thinking and concreteness, are common in psychiatric conditions.
  • Cerebral impairment and psychotropic medication are potential factors influencing thought disorders.

Purpose of the Study:

  • To investigate the relationship between cerebral impairment, specifically lateralized dysfunction and neuropsychological deficits, and two types of thought disorder: bizarre-idiosyncratic thinking and concreteness.
  • To examine the influence of psychotropic medication status on these thought disorders.

Main Methods:

  • The study assessed participants for bizarre-idiosyncratic thinking and concreteness.
  • Neuropsychological tests were administered to evaluate cognitive functions and identify deficits.

Related Experiment Videos

  • Participants' psychotropic medication status was recorded and analyzed.

    • Main Results:

    • Results did not support lateralized brain dysfunction as a cause for either bizarre-idiosyncratic thinking or concreteness.
    • Intellectual and arithmetic deficits were significantly associated with bizarre-idiosyncratic thinking.
    • No specific neuropsychological impairments were linked to concrete thinking.
    • Psychotropic medication status did not correlate with either type of thought disorder.

    Conclusions:

    • Cerebral lateralization is unlikely to be a primary factor in the development of these specific thought disorders.
    • Cognitive functions related to intellectual and arithmetic processing are more implicated in bizarre-idiosyncratic thinking.
    • The conceptualization and assessment methods for thought disorders may explain discrepancies with previous research and impact clinical use of psychoactive medications.