Here are the latest findings on the mental, emotional and physical life of the human infant, presented in nontechnical language and user-friendly A-to-Z format. Encyclopedia entries present thorough, up-to-the-minute assessments of infancy issues and brief definitions and descriptions of scientific, technological and psychological terms.; Content includes: hundreds of entries on everything from the Apgar scale to the zygote, such as abuse, caregivers, crack babies, disabilities, language development and low birth weight; discussion of important concepts and findings, the critical issues, and the individuals in the field, who helped shape popular and clinical study of infancy; how-to and suggestion sections for such topics as bottle feeding and breast feeding and information on infancy-related organizations; significant international and cross-cultural coverage.