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Cognitive control and discourse comprehension in schizophrenia.

Megan A Boudewyn¹, Cameron S Carter, Tamara Y Swaab

¹Department of Psychology and Center for Mind and Brain, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA.

Schizophrenia Research and Treatment

|September 13, 2012

Summary

Schizophrenia patients exhibit impaired language processing, particularly in understanding complex discourse, due to deficits in cognitive control. This impacts their ability to integrate and maintain multiple meanings in context.

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Area of Science:

Neuroscience
Psychiatry
Cognitive Psychology

Background:

Schizophrenia is characterized by cognitive deficits impacting functional outcomes.
Language abnormalities, including disorganized speech and comprehension deficits, are prominent in schizophrenia.
Cognitive control is crucial for language comprehension, especially for discourse processing.

Purpose of the Study:

To review language processing impairments in schizophrenia.
To evaluate these impairments in relation to domain-general control deficits.
To explore the role of cognitive control in discourse comprehension within schizophrenia.

Main Methods:

Review of existing literature on language comprehension and cognitive control in schizophrenia.
Analysis of evidence linking control deficits to language processing difficulties.
Synthesis of findings to support a domain-general control deficit model.

Main Results:

Schizophrenia involves significant deficits in domain-general control mechanisms.
These control deficits particularly impair the processing of meaningful discourse.
Difficulties arise from integrating and maintaining multiple levels of meaning in context.

Conclusions:

Domain-general control mechanisms are impaired in schizophrenia.
This impairment leads to difficulties in discourse-level language comprehension.
Discourse comprehension deficits may lessen with reduced conflicting information and stronger word relations.