This book reflects a century of developmental research that has documented a regular, stage-like progression from infancy through childhood. Finally this knowledge has been applied to one of the most distressing and confusing parts of parenting infants and toddlers: sleep. Written in a friendly and down-to-earth tone, the authors provide a fascinating overview of the developmental science as well as a highly practical how-to guide. This book should be required reading for every parent of a newborn.