Weight comparison judgments of two objectively equal stimuli by subjects with brain injury with and without somatosensory impairment and by subjects with peripheral sensory nerve injury as well as control patients with peripheral nerve injury to the leg showed that all groups had high negative time errors; greater time errors occurred for all groups on unilateral stimulation of either the affected or normal side. Patients with parietal lobe lesions had a greater negative time error than normals or patients with lesions elsewhere in the brain. Frontal lobe cases showed a significantly lower time error than non-frontal cases. (PsycINFO Database Record (c) 2006 APA, all rights reserved)