"There is no such thing as a baby." With these famous words, D.W. Winnicott expresses the existential fact that a newborn cannot survive without the recognition and care of another person and only comes to itself through its fellow human beings. The contributors to this book illustrate the significance of relationships for a child's psychological development from the very beginning. They document both research findings and clinical experiences, as well as psychosocial aspects, and demonstrate how D.W. Winnicott's ideas can be constructively integrated into the treatment of infants, toddlers, and their families. Contributions by Martin Altmeyer, Kathrin Engelhardt, Agathe Israel, Michael Kögler, Rainer Krause, Ulla Krüger, Marianne Leuzinger-Bohleber, Ulrich A. Müller, and Sigrid Schrage.