of the Institute of Psychoanalysis on March 5, 1953, and an official inauguration ceremony on June 1, 1954. Profound disagreements about training subsisted however, particularly between Daniel Lagache and Sacha Nacht each of whom held diverging views regarding the place of University teaching within psychoanalysis. In addition, Jacques Lacan had begun a technical shift consisting of varying the length of session times, most frequently making them very short, provoking the mistrust of other members of the Society. These tensions resulted in the departure of a small group, gathered around Daniel Lagache and subsequently joined by Jacques Lacan. This group resigned from the S.P.P., and founded the “Société Française de Psychanalyse” (S.F.P.). Having resigned from the SPP without maintaining their membership in the I.P.A., the members of the S.F.P. had to apply for membership in the I.P.A. The latter refused to recognise the practice of shortened session times and refused to recognise the S.F.P. In 1964, Lacan left the S.F.P., along with several of his students. The Association Psychanalytique de France (A.P.F.), which took into account the criteria of the I.P.A., was born from this split. The first “Lacanian” group emerged, the École Freudienne de Paris. Despite multiple splits, (most notably in 1969 with the creation of the “Organisation psychanalytique de langue française” (O.P.L.F.), also known as the “Quatrième Groupe”, which maintained ties with the S.P.P.), the lacanian movement spread. Conflicts multiplied and following the death of Lacan, the movement broke into multiple groups. During this troubled period, the Paris Psychoanalytical Society pursued its development, training numerous analysts who have profoundly influenced the course of psychoanalysis in France. Many new areas of psychoanalytic research and treatment have emerged from the work of its members (See section on “Perspectives”, below). The Paris psychoanalytical Society maintains close and regular contact with the Association Psychanalytique de France, the Quatrième Groupe and the Société Psychanalytique de Recherche et de Formation (S.P.R.F.), a new I.P.A. study group formed after a split in the O.P.L.F. The SPP today: organisation The Paris Psychoanalytical Society is a private, non-profit organization which, since 1997, is recognized as contributing to the public good. Its funding comes exclusively from membership fees and private donations. The S.P.P. has approximately 800 members and roughly 300 analysts in training. The Administrative Council, with its President and board are elected for two year terms. The Scientific secretaries work closely with the Scientific and Technical Council, also