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[Subjective cognition in schizophrenia].

S Potvin1, G Aubin2, E Stip3

  • 1Département de psychiatrie, faculté de médecine, centre de recherche de l'institut universitaire en santé mentale de Montréal, université de Montréal, Montréal, Canada; Département de psychiatrie, faculté de médecine, centre de recherche du centre hospitalier de l'université de Montréal, université de Montréal, Montréal, Canada.

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PubMed
Summary
This summary is machine-generated.

Schizophrenia patients show only partial self-awareness of their cognitive deficits, with visual learning and Stroop interference performance predicting subjective complaints. This highlights a disconnect between cognitive impairment and awareness in schizophrenia.

Keywords:
Apprentissage visuelAttentionMeta-cognitionMétacognitionPlanificationPlanningSchizophreniaSchizophrénieVisual learning

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Cognitive Psychology

Background:

  • Schizophrenia is characterized by significant neurocognitive deficits.
  • Self-awareness of these deficits is crucial for treatment but remains poorly understood.
  • Previous studies show inconsistent associations between subjective and objective cognition in schizophrenia.

Purpose of the Study:

  • To examine the relationship between subjective cognitive complaints and objective cognitive performance in schizophrenia.
  • To control for sociodemographic and psychiatric variables influencing this relationship.
  • To assess the validity of the Subjective Scale to Investigate Cognition in Schizophrenia (SSTICS).

Main Methods:

  • Recruited 82 patients with schizophrenia-spectrum disorder.
  • Assessed subjective cognition using the SSTICS.
  • Evaluated neurocognition with tasks assessing working memory, planning, and visual learning (Cambridge Neuropsychological Tests Automated Battery) and the Stroop Color-Word test.
  • Measured psychiatric symptoms using the Positive and Negative Syndrome Scale (PANSS) and the Calgary Depression Scale for Schizophrenia.
  • Employed multivariate hierarchic linear regression and factor analysis.

Main Results:

  • Visual learning and Stroop interference performance predicted SSTICS total scores, explaining moderate variance.
  • Visual learning was a consistent predictor across various SSTICS subscores (e.g., memory, attention, executive function).
  • Modest associations were observed between the PANSS cognitive factor and objective cognitive measures.
  • Factor analysis of the SSTICS yielded a 6-factor solution aligned with neuropsychological classifications.

Conclusions:

  • Schizophrenia patients exhibit only partial awareness of their cognitive deficits.
  • A discrepancy exists between the domains of cognitive impairment and cognitive awareness.
  • Clinicians' and patients' evaluations of cognitive deficits showed similar limitations.
  • Further research is needed to determine if these findings are specific to schizophrenia.