The Shape of Thought: How Mental Adaptations Evolve presents a road map for an evolutionary psychology of the twenty-first century. It shows how the brain can be both a complexly specialized organ and a dynamic and flexible self-organizing system, shaped by learning and culture. Clark Barrett takes the reader from the basics of evolutionary psychology to exciting stuff at the cutting-edge of today's research. He does so with splendid clarity, illuminating examples, and an engaging balance of wisdom and passion. An important book and an excellent read!