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Related Experiment Videos

Controlled and automatic processing during animal word list generation in schizophrenia.

S T Moelter1, S K Hill, J D Ragland

  • 1Department of Psychiatry, University of Pennsylvania Health System, USA. moelter@bbl.med.upenn.edu

Neuropsychology
|January 5, 2002
PubMed
Summary

Schizophrenia patients show impaired semantic-associative functioning, impacting both automatic and controlled cognitive processes during word list generation. This suggests broader network dysfunction in the disorder.

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Area of Science:

  • Cognitive Neuroscience
  • Psychiatric Research
  • Neuropsychology

Background:

  • Schizophrenia is characterized by cognitive deficits, particularly in semantic processing.
  • Understanding the nature of these deficits is crucial for developing targeted interventions.

Purpose of the Study:

  • To investigate controlled and automatic aspects of semantic-associative functioning in schizophrenia.
  • To evaluate performance on animal word list generation (WLG) in patients and controls.

Main Methods:

  • Utilized multidimensional scaling (MDS) and cluster analysis (CA) on WLG responses.
  • Calculated shared attribute (SA) indices between consecutive responses.
  • Compared patient (n=38) and control (n=47) performance.

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Main Results:

  • Patient MDS data showed less variance and more error than controls.
  • Schizophrenia patients exhibited fewer and less distinct animal-response clusters.
  • Controls demonstrated superior clustering and switching between response clusters.

Conclusions:

  • Animal WLG in schizophrenia is impaired by aberrant automatic semantic-associative network activation.
  • Controlled processes like search, access, and selection are also compromised.
  • Findings align with frontotemporal pathology observed in schizophrenia.