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Related Experiment Videos

Interference in word associations in schizophrenia.

A S DeWolfe, P J Fedirka

    Journal of Clinical Psychology
    |April 1, 1978
    PubMed
    Summary
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    Reactive schizophrenics experience more cognitive disturbances under high interference than process schizophrenics. This difference in associative disturbances supports theories of cognitive deficits in schizophrenia.

    Area of Science:

    • Cognitive psychology
    • Psychiatric research
    • Clinical psychology

    Background:

    • Schizophrenia is a complex mental disorder characterized by cognitive deficits.
    • Understanding cognitive differences between subtypes of schizophrenia, such as process and reactive, is crucial.
    • Response interference, the difficulty in selecting a response due to competing stimuli, may reveal these cognitive differences.

    Purpose of the Study:

    • To investigate the impact of response interference on word associations in male and female process and reactive schizophrenics.
    • To determine if associative disturbances differ between process and reactive schizophrenia under varying levels of stimulus commonality.
    • To test predictions derived from a qualitative differences theory of cognitive deficit in schizophrenia.

    Main Methods:

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    • Two studies were conducted using male and female participants diagnosed with process or reactive schizophrenia.
    • The primary measure involved assessing the difference in associative disturbances between high and low interference conditions.
    • Stimulus words with low and high commonality were used to manipulate interference levels.

    Main Results:

    • Reactive schizophrenics exhibited a significantly greater increase in associative disturbances under high interference compared to process schizophrenics in both studies.
    • This pattern of results was consistent across groups that did not differ in age, IQ, institutionalization, or symptom severity.
    • The findings provide empirical support for the qualitative differences theory of cognitive deficit in schizophrenia.

    Conclusions:

    • Response interference differentially affects associative processes in process and reactive schizophrenia.
    • Reactive schizophrenia appears more vulnerable to cognitive disruption from response interference.
    • The results support a theoretical framework positing qualitative distinctions in cognitive deficits between schizophrenia subtypes.