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Journal of Clinical and Experimental Neuropsychology Volume 31, 2009 - Issue 6
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Original Articles

D-KEFS Tower Test performance in patients with lateral prefrontal cortex lesions: The importance of error monitoring

Brian P. Yochim University of Colorado at Colorado Springs, Colorado Springs, CO, USACorrespondence[email protected]
,
Juliana V. Baldo Center for Aphasia and Related Disorders, VA Northern California Health Care System, Martinez, CA, USA
,
Katherine D. Kane University of Colorado at Colorado Springs, Colorado Springs, CO, USA
&
Dean C. Delis Psychology Service, VA San Diego Health Care System, San Diego, CA, USA; School of Medicine, University of California at San Diego, San Diego, CA, USA
Pages 658-663 | Received 25 Jul 2008, Accepted 30 Aug 2008, Published online: 22 Jul 2009
 
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Abstract

This study investigated performance on the Delis–Kaplan Executive Function System (D-KEFS) Tower Test in a sample of 12 patients with focal lesions in the lateral prefrontal cortex (PFC) and 12 control participants. PFC patients performed worse overall, spent more time on each move, and committed significantly more rule violations. The rule violation measure demonstrated 83% sensitivity and 100% specificity in the detection of lesions. Findings highlight the importance of error monitoring in the assessment of executive functioning. These preliminary results suggest that the lateral PFC may be critical for self-monitoring/inhibition and speed of processing in planning tasks.

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