This fourth book in the series continues the tradition of the popular earlier volumes by offering lively and entertaining information about some of contemporary psychology's most illustrious ancestors. The 21 chapters, many of them written by today's most visible and eminent authors, concentrate on the lives and achievements of major psychologists from a variety of areas. Created for undergraduate and graduate courses in the history of psychology, the variety of pioneers represented provide enough flexibility to also use it as a supplemental reader in other psychology courses. Each of the five volumes in this series contains different profiles thereby bringing more than 100 of the pioneers in psychology more vividly to life.