Mowrer and Klein have long been making contributions to the field of contemporary learning theories‎.‎ Their first two‎-volume set included chapters authored by many of the leading researchers in the field of animal learning and focused primarily on Pavlovian theory and instrumental conditioning‎.‎ These impartial texts were an important addition to the field and remain widely cited‎.‎ Over the last decade research on the nature of the learning process has evolved considerably‎.‎ The research in this new volume represents the cutting‎-edge contributions of first rate authors and co‎-authors‎.‎ These 14 chapters deal with the theoretical perspectives concerning the nature of the learning process‎,‎ as well as the innovative research that supports these positions‎.‎ This text is bound to be invaluable to both students and faculty of psychology and related disciplines‎,‎ as well as to outside scholars‎.‎ Key features include‎:‎ * an introductory chapter describing general theories of learning and the causes of the shift to more specific‎,‎ contemporary theories‎;‎ * five chapters detailing the research and theories of the nature of Pavlovian Conditioning‎;‎ * four chapters dealing with the current thinking and research on the nature of instrumental operant conditioning‎;‎ * three chapters describing the link between learning and physiology‎;‎ and * a concluding chapter detailing the application of learning theory to abnormal psychology‎.‎