The two-alternative forced-choice technique has been successful in the assessment of functional sensory deficits because it has the power to assess deception or exaggeration. This report describes how the procedure can be used for the assessment and modification of a memory complaint. Three case studies are presented. In two cases the supposed deficit was judged to be functional. In a third case a brain-injured patient "cheated" to obtain correct answers, suggesting that he was trying to hide a deficit and not attempting to obtain compensation.