After describing the manner in which the integration of psychoanalysis and developmental psychology became a central problem for ego psychology, the author examines the conditions that make it possible for new research and theory in developmental psychology to contribute to a revolution in contemporary psychoanalytic theory. They include: (1) the emergence of a state of "crisis" in American psychoanalysis centering on questions of the nature of early development and how it can be known; (2) the explosive growth of developmental research on early childhood dealing with issues at the heart of that crisis; and (3) the presence of a new generation of psychoanalysts and psychoanalytically oriented researchers capable of bringing that research to bear on those issues.