Dreams puzzled early man, Greek philosophers spun elaborate theories to explain humanmemory and perception, Descartes postulated that the brain was filled with "animalspirits," and psychology was officially deemed a "science" in the 19th century. The fifthedition of the best-seller AN INTRODUCTION TO THE HISTORY OF PSYCHOLOGY continues todemonstrate that most of the concerns of contemporary psychologists are manifestations ofthemes that have been part of psychology for hundreds of years. Aimed primarily at theundergraduate audience, Hergenhahn's comprehensive history of psychology includes numerousphotographs, biographical material, and useful pedagogical devices that facilitate studentinterest and learning.