Christine Anzieu-Premmerer is the Director of the Parent-Infant Program at the Columbia University Psychoanalytic Center for Training and Research. Though she currently lives Rosine Jozef  Perelberg is a Training Analyst and Supervisor, Fellow of the British Psycho-analytical Society.  She is Honorary Senior Lecturer in Psychoanalytic Theory at University College, London, where she is coordinator of the Freud Seminars and of the seminars on Sexuality. She is currently preparing a volume on Freud's work  Freud: The Dynamics of the Unconscious , and a book entitled Time and Space in Psychoanalysis.