This highly regarded, best-selling book provides a clear, well-organized, user-friendly overview of modern psychology, presenting the evolution of the schools of thought as a continuing story and illustrating their development within the social-intellectual climate of their times (the Zeitgeist) as well as their impact on one another. It personalizes the history of psychology, showing how events in the lives of the influential theorists, researchers, and teachers affected their ideas, approaches and methods. It also describes the rise and importance of applied psychology as a uniquely American form of psychology.