"For researchers interested in the differential experiences of children in the same family, I highly recommend this edited collection....this is well-written material which deals intelligently with the social worlds of young siblings, an alliance only recently appreciated and acknowledged as integral to family processes. I consider it a 'must read' for anyone interested in the social development of children and adolescents in their families."—ISSPR Bulletin"...a concise book that is essential reading for anyone wanting to look at where developmental psychology is heading. These authors with their colleagues put forward the rationale for a new study that will be a classic in the field, as it will demonstrate empirically the richness and value of defining important links of non-shared environmental to developmental processes. We will never look at family environmenatl and developmental processes in the same way....Separate Social Worlds of Siblings....is a glorious Fourth of July display of fireworks. In other words, it is awesome!—Contemporary Psychology"This volume includes several new and compelling contributions to the literature on nonshared environment....recommended for researchers and students with some acquaintance with current issues in behavioral-genetic research."—Human Etiology Bulletin