The realistic simulation of Multiple Personality Disorder (MPD) has become much more possible as a result of the recent proliferation of information about MPD in the professional and popular press. Such simulation has been documented most frequently as malingering in a forensic context. However, outside a forensic context where the motivation may not be obvious, the detection of simulated MPD can be a difficult task. IntroductionDespite some ongoing professional skepticism, Multiple Personality Disorder (MPD) is a recognized disorder, and is a part of the American Psychiatric Association's DSM-III-R classification (1987). Since 1980, when the first comprehensive descriptions of MPD began to appear in modern psychiatric literature (Bliss, 1980;Coons, 1980;Greaves, 1980), there has been a rapid growth in the amount of professional information available to clinicians. The public has also been heavily exposed to information about MPD, beginning with books about MPD such as The Three Faces of Eve (Thigpen & Cleckley, 1957) and Sybil (Schreiber, 1973), more recent first-person accounts of sexual abuse and dissociation (Bass & Davis, 1988), and frequent appearances of both mental health professionals and patients on radio and television talk shows. As with any other diagnosis which captures public and professional attention, MPD may be simulated.This paper concerns instances where persons deliberately fabricate the signs and symptoms of