Malingering is the intentional production of false or grossly exaggerated physical or psychological symptoms, motivated by external incentives such as avoiding military duty, avoiding work, obtaining financial compensation, evading criminal prosecution, or obtaining drugs. In other words, people try to cheat on many types of examinations in order to look like they have a neurological problem when they do not or when they want to elude detection of a neurological problem. Malingering is expensive, in that fraud, that broadly includes malingering, in that it is estimated to cost the insurance industry $150 billion annually (or ~ $1800 per family in the US). The obvious way for someone to cheat on a test is just to perform poorly. However, most of the CM diagnostics are designed such that individuals who have neurological deficits actually outperform healthy individuals. To paraphrase, illusory conditions will confound the results of healthy individuals, but will only confound unhealthy individuals to a certain degree, or not at all. We are currently in the initial stages of conducting malingering studies, to investigate if healthy individuals are able to knowingly simulate (i.e.., fake) neurological deficits.