I have a raggedy old copy of this book. It is based largely on the work and observations of (renowned but very hard to read) Jean Piaget , and gives a wonderful window into the child's thoughts, emotions, behaviors, and processes. This book has helped me time and again to understand and really marvel at what's going on during challenging developmental stages. This is good, solid developmental psychology. And written in a way that is accessible and useful to parents without being preachy. White includes a few "childrearing recommendations." In every stage, the most important task for parents, he says, is "giving your child a sense of being loved and cared for."