This book presents an overview of Jean Piaget's psychological writings, as well as an annotated glossary of the essential explanatory concepts in those publications. The book may be consulted in various ways, depending on whether one is looking for an introduction to Piaget's theory, a survey of his body of work, a historical perspective, or details about a particular concept.

The volume is divided into two major sections. The Chronological Overview presents Piaget's early ideas and the most important sources of his inspiration, and reviews his research in each of four main periods plus one transitional one. The Glossary covers the explanatory concepts with concrete examples and references to the primary Piagetian publications in which they are defined and developed.