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During the past two decades clinical and research efforts have led to increasingly sophisticated and effective methods and instruments designed to detect exaggeration or fabrication of neuropsychological dysfunction, as well as somatic and psychological symptom complaints. A vast literature based on relevant research has emerged and substantial portions of(More)
Boxing has held appeal for many athletes and audiences for centuries, and injuries have been part of boxing since its inception. Although permanent and irreversible neurologic dysfunction does not occur in the majority of participants, an association has been reported between the number of bouts fought and the development of neurologic, psychiatric, or(More)
Validity scales were recently developed to improve assessment of symptom validity beyond original MMPI-2 validity scales. In an initial study, the Response Bias Scale (RBS; Gervais, 2005) was developed based upon non-head-injury claimant performances on a cognitive effort measure, the Word Memory Test (WMT). The present study examined relationships of the(More)
Serial assessments are now common in neuropsychological practice, and have a recognized value in numerous clinical and forensic settings. These assessments can aid in differential diagnosis, tracking neuropsychological strengths and weaknesses over time, and managing various neurologic and psychiatric conditions. This document provides a discussion of the(More)
This study examined the effects of alcohol on visually evoked potentials recorded from the primary visual cortex (VC) and superior colliculus (SC) of chronically implanted rats. Animals were given intraperitoneal injections of saline, and of 0.15, 0.5, 1.0 and 1.5 g ethanol/kg body weight on separate days. Evoked potentials were recorded at 5, 20, 40, and(More)
The association between scores on MMPI-2 scales and cognitive symptom validity test (SVT) failure was investigated in 127 criminal defendants evaluated for competency to stand trial, criminal responsibility, and drug dependence, and 141 personal injury and disability claimants. Results indicated that SVT failure was associated with exaggerated symptom(More)