Current research centers on the development of neuropsychological diagnostic instruments for determining the visual processing deficits associated with right hemisphere brain lesions. Currently, a multifaceted search task is being employed in an attempt to distinguish parvo from magnocellular processing disorders. A second interest is in the sex differences that exist in the expression of these visual processing disorders and in other areas of neuropsychological assessment. Work also continues on the use of the Kent Perceptual Processing Inventory in neuropsychological assessment of learning d...