Directional Bias in Line Orientation Test Errors in Parkinson's Disease.

Objective: Value in evaluating error subtypes on visuospatial line orientation tests has been reported. Directional bias metrics for line orientation test errors represent easily quantifiable data that have not previously been studied. We evaluated whether patients with a clinical condition known to affect visuospatial functioning (Parkinson's disease [PD]) exhibited unique directional error patterns on the RBANS Line Orientation test relative to other neuropsychology-referred patients.

Classification accuracy of the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) Effort Index (EI) and Effort Scale (ES) relative to the Test Of Memory Malingering (TOMM) in a mixed clinical sample.

Performance Validity Testing has become an integral part of neuropsychological assessment, and a variety of embedded screening measures for performance validity have been proposed. Several performance validity indexes have been developed for the Repeatable Battery for the Assessment of Neuropsychological Status. Although the RBANS Effort Index (EI) and Effort Scale (ES) have garnered some empirical support, other research has raised questions regarding their accuracy in a number of assessment contexts.