This book would bridge the environmental and the psychological approaches, based on aspects of Hartmann's ego psychology, Erikson's Ego Identity, Mead's Generalized Other, Parson's Socialization, Kurt Lewin's Growth, Federn's Ego Feeling. It interweaves these concepts toward emphasis on the crucial importance of the environment in ego development. A section of the book gives detailed illustration from mental institutions, clinics and community relations.