In their first three years of life, babies face the most complex learning endeavor they will ever undertake as human beings: They learn to talk. Now, as researchers make new forays into the mystery of the development of the human brain, Golinkoff and Hirsh-Pasek, both developmental psychologists and language experts, offer parents a powerfully insightful guidebook to how infants--even while in the womb--begin to learn language. Along the way, the authors provide parents with the latest scientific findings, developmental milestones, and important advice on how to create the most effective learning environments for their children. This book takes readers on a fascinating, vitally important exploration of the dance between nature and nurture, and explains how parents can help their children learn more successfully.