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Information processing and attentional functioning in the developmental course of schizophrenic disorders.

K H Nuechterlein, M E Dawson

    Schizophrenia Bulletin
    |January 1, 1984
    PubMed
    Summary

    Cognitive deficits in information processing and attention are present in individuals at risk for schizophrenia, actively experiencing psychosis, and in remission. These persistent deficits may indicate vulnerability to schizophrenia.

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    Area of Science:

    • Neuroscience
    • Psychiatry
    • Cognitive Psychology

    Background:

    • Schizophrenia is associated with cognitive impairments.
    • Understanding these deficits can help identify vulnerability and subtypes of schizophrenia.

    Purpose of the Study:

    • To examine information processing and attentional deficits in schizophrenia risk populations, active psychosis, and remission.
    • To differentiate between persistent and transient cognitive deficits in schizophrenia.

    Main Methods:

    • Review of studies on vigilance, span of apprehension, and serial recall tasks.
    • Analysis of reaction time crossover, dichotic listening, backward masking, and referential communication.

    Main Results:

    • Deficits in high-load vigilance, apprehension, and serial recall tasks are present across all schizophrenia groups.

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  • These persistent deficits may indicate vulnerability factors.
  • Some deficits, like recognition of simple stimuli, appear only during active psychosis.

    • Conclusions:

    • Persistent cognitive deficits may represent vulnerability markers for schizophrenia.
    • Transient deficits during active psychosis could reflect temporary disruptions or severe subtype-specific impairments.