Visual organization test performance in an African American population with acute unilateral cerebral lesions.

Controversy abounds as to whether the Hooper Visual Organization Test (VOT) is a measure of hemisphere-specific, region-specific, or non-specific brain damage. The present study examines this issue in a group of African Americans with acute unilateral brain damage and non-brain-injured controls. Consistent with the idea that the VOT is a measure of “organic” cerebral pathology, non-brain damaged controls earned significantly higher VOT scores than brain-damaged patients. While other studies have noted that the VOT is primarily sensitive to damage in the right parietal region of the brain, the present study shows that VOT performance is especially vulnerable to acute lesions in the right anterior quadrant of the brain. This latter finding supports the idea that VOT performance is differentially sensitive to regional cerebral pathology, but challenges the region specific claim of poorer VOT performance among patients with right posterior cerebral damage.