Why We Cooperate

Through experiments with kids and chimpanzees, this cutting-edge theory in developmental psychology reveals how cooperation is a distinctly human combination of innate and learned behavior. “[A] fascinating approach to the question of what makes us human.” — Publishers Weekly   Drop something in front of a 2-year-old, and she’s likely to pick it up for you. This is not a learned behavior, psychologist Michael Tomasello argues. Through observations of young children in experiments he de