The Test of Memory Malingering (TOMM) is a newly developed test designed to detect individuals who exaggerate or deliberately fake memory impairment on neuropsychological tests. The TOMM employs a two-trial, visual recognition procedure. On each trial, 50 line-drawn pictures, presented at 4-second intervals, are followed by 50, 2-item test panels containing a target and a foil. Prior research has demonstrated that the TOMM discriminates between subjects stimulating nonlitigating TBI patients. The present study extends this research by collecting extensive normative data from a mixed clinical sample of patients and providing a clinically appropriate criterion score. The TOMM was administered to 475 community-dwelling individuals and to 148 neurologically impaired patients from the following diagnostic categories: cognitive impairment (n = 42), aphasia (n = 21), traumatic brain injury (n = 45), and dementia (n = 40). Results showed that the community-dwelling adults achieved exceptionally high scores on the TOMM, exceeding 99% accuracy (>4950) on Trial 2. Moreover, performance was not sensitive to the effects of age or years of education. Highly accurate performance also occurred with the clinical sample. On the second trial, the cognitively impaired, aphasic, and traumatic brain injury groups responded at greater than 97% accuracy. The dementia group obtained 92% correct. A cut-off score of 45 (90% correct) on the second trial correctly classified 95% of all non-demented patients (91% of all patients). These results, coupled with data from previously completed research, indicate that the TOM is a useful psychometric test for detecting exaggerated or deliberately faked memory impairment.