To make sense of the world, infants have to perceive it, and research into the development of sensory and perceptual abilities is one of the most exciting and important areas of infancy research. This book aims both to reflect current knowledge of perceptual development and to point to some of many questions that remain unanswered. Each of the major sections is prefaced by introductory comments, making the book equally useful for advanced undergraduates, postgraduates, researchers, and professionals who are interested in early perceptual development and in infancy in general.