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Behavioral Evidence of Prolonged Interhemispheric Transfer Time Among Psychopathic Offenders

Overview
Journal Neuropsychology
Specialty Neurology
Date 2007 May 9
PMID 17484594
Citations 6
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Abstract

Several lines of evidence suggest the possibility of abnormal interhemispheric communication in psychopathy, but there have been few direct empirical studies. To address this gap in the literature, the authors examined one important aspect of interhemispheric communication, the efficiency with which information is transferred across the corpus callosum. Using A. T. Poffenberger's (1912) paradigm for estimating interhemispheric transfer time (IHTT) from simple motor responses to lateralized stimuli, the authors found a substantially prolonged IHTT among psychopathic criminals relative to nonpsychopathic criminals. This prolonged IHTT was somewhat more pronounced when participants were using their right hand to respond. This study provides initial behavioral evidence of slowed interhemispheric transfer in psychopathy.

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