Organized by age groups, this worldwide best-selling text sets the standard for understanding motor development from infancy through adulthood. The reader is presented with the most up-to-date research and theory using a conceptual framework that brings clarity to understanding infant, childhood, adolescent, and adult motor development. The Hourglass Model is used as a consistent conceptual framework throughout the text, and serves as a unique aid to learning. The text is divided into separate sections focusing on critical aspects of Infancy, Childhood, Adolescence and Adulthood, making it appropriate for comprehensive courses as well as to complement courses that focus on a particular chronological age.