The purpose of the current study was to replicate the clinical validation study of the Test of Memory Malingering (Tombaugh, 19961997). Fifty cases were selected from two different participant pools: medically documented traumatic brain-injury patients and compensation-seeking, mild head trauma cases. Results replicated and expanded those found by Tombaugh and indicated that employing a Trial 2 cutting score of greater than 5 errors provided adequate sensitivity to suboptimal effort while demonstrating remarkable insensitivity to cognitively impaired traumatic brain-injury cases. Use of a lower cutting score (e.g., 2 to 5 errors) is also discussed.