This book walks psychologists through the study of motivation, exploring all conditions that exist within the person and within the environment and culture that explain why we want what we want and why we do what we do. The fifth edition expands on theoretical ideas further into practical applications, especially in the areas of education, work, therapy, sports, and the home. Each chapter features a chapter box that addresses a specific concern. At the end of each chapter is a list of recommended readings for further study. Psychologists will discover a number of new ideas, including achievement goals, personal strivings, types of extrinsic motivation, implementation intentions, and more.