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Negative symptoms of schizophrenia indicate a reduction or absence of typical behaviors and emotional responses found in healthy individuals, while positive symptoms reflect an excess or distortion of normal functioning.
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Neurocognitive insight and objective cognitive functioning in schizophrenia.

Cynthia Z Burton1, Philip D Harvey2, Thomas L Patterson3

  • 1SDSU/UCSD Joint Doctoral Program in Clinical Psychology, 6363 Alvarado Court, San Diego, CA 92120, USA.

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Many individuals with schizophrenia have neurocognitive impairment but lack insight into their deficits. This unawareness is common and not linked to executive function or daily functioning, suggesting targeted interventions are needed.

Keywords:
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Area of Science:

  • Psychiatry
  • Neuroscience
  • Clinical Psychology

Background:

  • Neurocognitive impairment significantly impacts daily functioning in schizophrenia.
  • Awareness of neurocognitive deficits (neurocognitive insight) in schizophrenia is not well understood.
  • Objective neurocognition and functional capacity are crucial for managing schizophrenia.

Purpose of the Study:

  • To investigate neurocognitive insight in individuals with schizophrenia-spectrum disorders.
  • To examine the relationship between neurocognitive insight, objective neurocognition, and functional capacity.
  • To identify factors associated with varying levels of neurocognitive insight.

Main Methods:

  • A large outpatient sample of 214 participants with schizophrenia-spectrum disorders was assessed.
  • Neurocognition, functional capacity, and self-reported neurocognitive problems were measured.
  • Latent profile analysis was used to classify participants based on performance and self-report.

Main Results:

  • Over 75% of participants exhibited objective neurocognitive impairment.
  • 54% of those with impairment showed "impaired" neurocognitive insight, underreporting deficits.
  • Impaired insight was unrelated to executive functioning, functional capacity, or negative symptoms.
  • Intact insight was associated with higher positive and depressive symptoms.

Conclusions:

  • A significant proportion of individuals with schizophrenia are unaware of their neurocognitive deficits.
  • Self-report is unreliable for assessing neurocognition in schizophrenia.
  • Targeting depressive and positive symptoms may benefit those with intact neurocognitive insight.