This encyclopedia is a comprehensive reference work addressed to those interested in human development from birth through adolescence, including students of child development, teachers, health care providers, child psychologists, family counselors, education professionals, academics, and parents. Signed entries in the encyclopedia were prepared by some of the leading experts in child development. Survey articles cover the primary stages, key theories, and issues in child development. Name entries profile prominent scholars/theorists in child development, with emphasis on their contributions to the field. Other entries define terms and concepts from the fields of health care, education, and developmental psychology. Also included are entries on consumer products and mass electronic media aimed at children. The majority of entries offer suggestions for further study, and a bibliography provides a comprehensive listing of sources. (HTH)