Abstract
Two experiments were conducted to investigate the effects of positive or negative neurological examination results on performance on the Luria-Nebraska Neuropsychological Battery in a sample of 229 patients with a history of proven brain damage. The groups did not differ on demographic variables of age, education, or disorder chronicity. The positive and negative neurological examination groups were highly differentiable. A second study demonstrated additional high subgroup differentiability within the positive and negative neurological examination groups as a function of the degree of cognitive deficit demonstrated on the neuropsychological measure. Implications of the results were discussed.
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