Mark Sossin, PhD, is Professor of Psychology, Pace University (NY), teaching in an APA-accredited Combined Program in Professional-Scientific (School-Clinical) Psychology. He is a clinical psychologist, an adult, child, and adolescent psychoanalyst, and a couples/family- and infant/parent-psychotherapist. He is a Training Analyst, New York Freudian Society; Clinical Faculty and Supervisor, Derner Institute of Advanced Psychological Studies, Adelphi University Postgraduate Programs; Faculty, Anni Bergman Parent-Infant Training Program (NYFS and IPTAR); co-author of books and papers, including The Meaning of Movement: Clinical and Developmental Applications of the Kestenberg Movement Profile. At Pace, he is Director of the Parent-Infant/Toddler Research Nursery. He serves as Vice-President of Child Development Research, and is a past-president of the Association for Infant and Early Childhood Psychologists.