The condition known as Multiple Personality Disorder (MPD) or Dissociative Identity Disorder (DID) is metaphysically strange. Can there really be several distinct persons operating in a single body? Our view is that DID sufferers are single persons with a severe mental disorder. In this paper we compare the phenomenology of dissociation between personality states in DID with certain delusional disorders. We argue both that the burden of proof must lie with those who defend the metaphysically extravagant Multiple Persons view and (...) that there is little theoretical motivation to yield to that view in light of the fact that the core symptoms of DID bear remarkable similarity to the symptoms of these other disorders where no such extravagance is ever seriously entertained. (shrink)

It is widely felt that the sorts of ideas current in modern laterality and split-brain research are largely without precedent in the behavioral and brain sciences. This paper not only challenges that view, but makes a first attempt to define the relevance of older concepts and data to present research programs.

While there were several psychical research journals during the nineteenth century many interesting discussions about psychic phenomena took place as well in a variety of intellectual reviews and scholarly and scientific journals of various disciplines. One such example was the French journal Revue Philosophique de la France et de l’Étranger founded in 1876 by Théodule Ribot. Reflecting the various interests of psychologists during the nineteenth century many topics were discussed in the Revue, among them hypnotic phenomena, as well as mental (...) suggestion and mediumship. The journal provided an important forum for French discussions in psychology and in the social sciences in general that helped the development of those disciplines. The same may be said about psychic phenomena, which were discussed in the pages of the Revue by authors such as Émile Boirac, Victor Egger, Théodore Flournoy, Jules Héricourt, Pierre Janet, Léon Marillier, Julian Ochorowicz, Charles Richet, and Albert Ruault. We present summaries of some of these writings which we hope will bring some of this material to the attention of non-French readers. (shrink)