This newsletter theme issue contains four articles which focus on the development of normal and handicapped infants in various settings. "The Baby's World," by Lois Barclay Murphy and Colleen T. Small, emphasizes experiences of sensation and discovery in the first three years of life, noting the role of caregivers and the cultural context. "The Developmentally Designed Group Care Setting: A Supportive Environment for Infants, Toddlers and Caregivers," by Louis Torelli, offers principles and illustrations of appropriate classroom physical environment arrangements. The third article, "Infant Stimulation: The Pros and Cons in Historical Perspective," by Anneliese F. Korner, discusses how early stimulation can broaden and enrich development and facilitate newly emerging developmental acquisitions. Finally, "The Development of Place Identity in the Child," by Harold M. Proshansky and Nina M. Gottlieb, examines the physical world socialization of the child as a sub-structure of his self-identity. (DB)