BACKGROUND Although perceptual and representational neglect are frequently associated, the demonstration of a double dissociation between both neglect forms suggests that both rely on different central mechanisms. In addition, perceptual neglect can be selectively observed within personal space or extrapersonal space. However, it is not known whether the latter dissociation also exists in repre...

The present study examined the influence of African American acculturation on the performance of neuropsychological tests following traumatic brain injury (TBI). Seventy one participants already enrolled in a larger-scale study assessing the impact of TBI (i.e., the South Eastern Michigan Traumatic Brain Injury Model Systems project) completed a self-report measure of African American accultura...

Ninety-two mixed etiology neurological patients and 216 control participants were assessed on a range of neuropsychological tests, including 10 neuropsychological measures of executive function derived from 6 different tests. People who knew the patients well (relatives or carers) completed a questionnaire about the patient's dysexecutive problems in everyday life, and this paper reports the ex...

OBJECTIVE To evaluate the discriminative and diagnostic values of neuropsychological tests for identifying schizophrenia patients. METHODS A cross-sectional study with 36 male schizophrenia outpatients and 72 healthy matched volunteers was carried out. Participants underwent the following neuropsychological tests: Wisconsin Card Sorting test, Verbal Fluency, Stroop test, Mini Mental State Exa...

Cognitive impairment is well established in schizophrenia but its relationship to the course of the illness remains incompletely understood. Here we document two patients with schizophrenia who underwent neuropsychological testing while chronically unwell, and this was repeated after improvement took place. Both patients showed significant recovery of general intellectual function, accompanied ...

Neuropsychologists frequently rely on a battery of neuropsychological tests which are normally distributed to determine impaired functioning. The statistical likelihood of Type I error in clinical decision-making is in part determined by the base rate of normative individuals obtaining atypical performance on neuropsychological tests. Base rates are most accurately obtained by co-normed measure...

This study compared variance accounted for by neuropsychological tests in both a brief motor battery and in a comprehensive neuropsychological battery. 327 HIV+ subjects received a comprehensive cognitive battery and a shorter battery (Timed Gait, Grooved Pegboard, and Fingertapping). A significant correlation existed between the motor component tests and the more comprehensive battery (52% of ...

This article reports an investigation into the empirical status of a little understood cognitive factor-tactile-kinesthetic ability. To this end, a variety of haptic tasks, including three subtests of the Halstead-Reitan Neuropsychological Test Battery (HRB), were administered to 108 participants, along with established markers commonly employed in contemporary psychometric investigations. The ...

OBJECTIVE To examine the longitudinal relationship between neuropsychological functioning and internalizing symptoms, as mediated by social competence in youth with spina bifida (SB). METHODS A total of 111 youth (aged 8-15 years, M = 11.37) with SB, their parents, and teachers completed questionnaires regarding attention, social competence, and internalizing symptoms. Youth also completed a ...

Extensive neuropsychological testing is reported on two chronic patients with combined temporopolar and prefrontal damage, dominantly left-hemispheric, and, as control, one chronic patient with bi-hemispheric prefrontal damage. The principal finding is that combined temporofrontal damage, but not substantial prefrontal damage alone, results in marked retrograde memory deficits while leaving int...