As a registered play therapist and professor of early childhood, I can tell you this book is one of the most comprehensive and well-written books on the subject of children. Our society no longer values play in children, and this book illustrates what happens to children if they cannot play. Play is essential for the overall development of a child. Piaget and Vygotsky were just two major theorist that support Joe Frost's contentions. This is a must book for anyone doing a literature review for research involving the overall development of a child. It is a must book for any one in an educational setting whereby one teaches future educators about children.