The Cognitive Laterality Battery: Tests of Specialized Cognitive Function

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Abstract
The Cognitive Laterality Battery of neuropsychological tests is described and normative data and statistics are presented. Selection of tests was based on converging evidence from studies on patients with unilateral cerebral lesions, complete forebrain commissurotomy, and on normal subjects suggesting that visuospatial skills are primarily related to the right hemisphere while verbal and sequential skills are primarily related to the left. Factor analyses confirmed the dichotomy of the test choices. It is suggested that test results on individuals be interpreted as a cognitive profile defining the relative performance of specialized functions rather than the relative right or hemisphere locations. Previous studies with the CLB are described.