Presents an item-by-item analysis of 28 items on the Luria-Nebraska Neuropsychological Battery and provides data for 338 patients (average age 40.38 yrs). Findings indicate that while primary sensitivity of the Motor scale is to lesions of the posterior frontal lobes, the intercorrelations among other Luria items have shown that lesions of the temporal and parietal lobes and anterior frontal area can also lead to poor performance on Motor scale items. (11 ref)