books.google.com.br - Dreams puzzled early man, Greek philosophers spun elaborate theories to explain human memory and perception, Descartes postulated that the brain was filled with "animal spirits," and psychology was officially deemed a "science" in the 19th century. In this Fifth Edition, B.R. Hergenhahn demonstrates...http://books.google.com.br/books/about/An_Introduction_to_the_History_of_Psycho.html?hl=pt-BR&id=iZwXnfYAo3oC&q=Skinner&utm_source=gb-gplus-shareAn Introduction to the History of Psychology