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Cognitive Functioning and Schizotypy: A Four-Years Study.

Penny Karamaouna1,2, Chrysoula Zouraraki1,2, Stella G Giakoumaki1,2

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Summary

Longitudinal study reveals schizotypal traits and cognitive functions show varied stability over time. High negative schizotypy predicts poorer cognitive performance, informing early intervention for at-risk individuals.

Keywords:
cognitive functioningfollow-upschizophrenia-spectrumschizotypal traitsstability over time

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Area of Science:

  • Psychology
  • Neuroscience
  • Psychiatry

Background:

  • Cross-sectional studies suggest cognitive deficits in high schizotypal individuals mirror schizophrenia.
  • Longitudinal evidence for cognitive stability and predictive value of schizotypy is limited.

Purpose of the Study:

  • Examine the stability of schizotypal traits and cognitive functions over 4 years.
  • Assess the predictive value of baseline schizotypy on follow-up cognition.
  • Compare cognitive differences between high negative schizotypal individuals and controls over time.

Main Methods:

  • Longitudinal assessment of 70 participants (mean age 36.17, 70% female) at baseline and 4-year follow-up.
  • Schizotypal traits evaluated using the Schizotypal Personality Questionnaire.
  • Comprehensive neuropsychological testing of cognitive functions.

Main Results:

  • Schizotypal traits generally decreased, except in 'schizotypy congruent' individuals where negative and disorganized schizotypy remained stable.
  • Cognitive functions like response inhibition and attention switching improved over time.
  • High negative schizotypy predicted poorer response inhibition and semantic switching; high disorganized schizotypy predicted poorer semantic processing and processing speed.

Conclusions:

  • Schizotypal traits exhibit differential stability, with some aspects remaining consistent in specific individuals.
  • Baseline schizotypy predicts distinct patterns of cognitive performance over a 4-year period.
  • Findings support targeted early interventions for high-risk schizotypal populations.