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The relationship between cognitive dysfunction and stress sensitivity in schizophrenia: a replication study.

Manuel Morrens1, Lydia Krabbendam, Maarten Bak

  • 1Collaborative Antwerp Psychiatric Research Institute, Campus Drie Eiken, Antwerp, Belgium.

Social Psychiatry and Psychiatric Epidemiology
|March 6, 2007
PubMed
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Cognitive impairments in psychotic disorder patients show mixed associations with stress sensitivity. Some cognitive deficits inversely correlate with stress, while others are independent, suggesting distinct pathways in psychosis.

Area of Science:

  • Neuroscience
  • Psychiatry
  • Cognitive Psychology

Background:

  • Cognitive impairments are common in psychotic disorders.
  • The relationship between cognitive deficits and stress sensitivity in psychosis is not fully understood.
  • Previous findings suggest cognitive impairments may not be associated or are inversely associated with stress sensitivity.

Purpose of the Study:

  • To replicate the finding of a non-existent or inverse association between cognitive impairments and stress sensitivity.
  • To investigate this relationship in patients diagnosed with psychotic disorder.
  • To clarify the interplay between cognitive function and stress reactivity in psychosis.

Main Methods:

  • A sample of 25 patients diagnosed with psychotic disorder was assessed.

Related Experiment Videos

  • Cognitive functioning was evaluated using the Trailmaking Test, Stroop Color Word Test, and a subtest of the Behavioral Assessment of Dysexecutive Syndrome (BADS).
  • Sensitivity to stress in daily life was measured.

    • Main Results:

    • Impairments in the Trailmaking Test and Stroop Color Word Test were inversely associated with daily life stress sensitivity.
    • Impairment in a BADS subtest showed no association with stress sensitivity.
    • The findings indicate that cognitive functioning can be independent or inversely associated with momentary stress sensitivity in psychosis.

    Conclusions:

    • Cognitive impairment and affective reactivity may represent independent or mutually exclusive mechanisms in psychosis.
    • These findings suggest competing causal pathways influencing cognitive function and stress response in psychotic disorders.
    • Further research is needed to elucidate the complex relationship between cognition, stress, and psychosis.