Combining deep medical knowledge with extensive and long-term experience as parents of 8 children, Dr. William Sears and Martha Sears present the modern "baby bible." The Baby Book is known for its breadth and authority.

Its revised edition focuses on the fundamental needs of babies – food, sleep, development, and care – and addresses the concerns of today's busy parents.

The authors of the book are advocates of attachment parenting, an approach that emphasizes the importance of the parent-child connection and aligns with modern research on raising happy, confident children.