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Schizotypal traits and cognitive function in healthy adults
Hiroko Noguchi1, Hiroaki Hori, Hiroshi Kunugi
1Department of Mental Disorder Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, 4-1-1, Ogawahigashi, Kodaira, Tokyo 187-8502, Japan.
Psychiatry Research
|October 14, 2008
Summary
Schizotypal traits in healthy adults are linked to lower verbal IQ, suggesting these traits may negatively impact cognitive function even at non-clinical levels. This research explores the schizotypy-cognition relationship in adults.
Area of Science:
- Cognitive Psychology
- Psychiatry
Background:
- Schizotypy is associated with cognitive impairments in students.
- The link between schizotypal traits and cognitive function in adults is less understood.
Purpose of the Study:
- To investigate the association between schizotypal traits and cognitive functions in healthy adults.
- To assess memory, attention, executive function, and general intelligence in relation to schizotypy.
Main Methods:
- 124 healthy adults completed the Schizotypal Personality Questionnaire (SPQ).
- Cognitive function was assessed using the Wechsler Memory Scale-Revised (WMS-R), Wechsler Adult Intelligence Scale-Revised (WAIS-R), and Wisconsin Card Sorting Test (WCST).
Main Results:
- SPQ scores correlated inversely with verbal IQ and specific WAIS-R subtests (information, comprehension, similarities).
- No significant correlations were found between SPQ scores and memory, attention, performance IQ, or executive functioning.
Conclusions:
- Schizotypal traits in healthy adults are associated with decrements in verbal IQ.
- These findings support the continuum model of schizotypy, indicating potential negative impacts on cognition even at subclinical levels.
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