Validation of the general neuropsychological deficit scale with nondisabled, learning-disabled, and head-injured young adults

This study examines the validity of Reitan and Wolfsonʹs General Neuropsychological Deficit Scale (GNDS). The GNDS differentiated nondisabled, learning-disabled, and head-injured young adults matched for FSIQ with greater accuracy than Halsteadʹs Impairment Index.