How do human thinkers interact with reasoning norms? The Development of Thinking and Reasoning is a timely and impressive answer based on post-Piagetian and dual-process theories. Its central themes include children’s surprising capabilities, adults’ unexpected liabilities to error, interplays between heuristic and rule-based inferences. The promise is inviting: understanding rationality requires a developmental focus. - Leslie Smith, Lancaster University, UKDevelopmental science owes much to Piaget, but the domain has also evolved considerably since his time. The Development of Thinking and Reasoning provides a scholarly contemporary survey of one major branch of developmental research. Beyond introducing readers to current thinking in the field, however, this book serves another important purpose – drawing out connections across epochs and between schools of thought while also sharpening the differences between them. Students and scholars alike will find it a valuable contribution to the developmental literature. - Michael W. Connell, Institute for Knowledge Design, Massachusetts, USA