Psychometric Schizotypy and Motor Performance

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Psychometric Schizotypy and Motor Performance

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Title: Psychometric Schizotypy and Motor Performance
Author: Lenzenweger, Mark F.; Maher, Brendan Arnold

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Citation: Lenzenweger, Mark F., and Brendan A. Maher. 2002. Psychometric schizotypy and motor performance. Journal of Abnormal Psychology 111, 4: 546-555.
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Abstract: Motor abnormalities have long been a focus in discussions of schizophrenia. The present study used a newly developed line drawing task to examine fine motor performance and psychometrically assessed schizotypy in a large, randomly ascertained sample of young adults (N = 120) with no history of psychosis. Poor motor performance on the line drawing task, indexed by root-mean-square error (RMS), was significantly related to 4 separate psychometric measures of schizotypy in the overall sample. The psychometric schizotypy-RMS association remained significant for 2 of the schizotypy measures even when the effects of intellectual functioning, mental state factors, and sustained attention were statistically controlled in a regression analysis. The status of the line drawing index as a schizophrenia liability measure is discussed.
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