The criminal responsibility of people with multiple personality disorder

Because multiple personality disorder (MPD) is more frequently diagnosed today than in the past, it is likely that more multiples will plead insanity. The courts are in a state of disarray as to how best to respond to these pleas. This article considers multiples' responsibility on three interpretations of the status of their alters: that they are different people; that they are different personalities; or that they are parts of one complex, deeply divided personality. On all three theories multiples are nonresponsible. Nevertheless, three rare circumstances exist under which multiples should be found guilty. The article concludes by indicating the kinds of issues psychiatry might explore to further assist the law in its analysis of the criminal responsibility of multiples.