Barry Schwartz, Steven Robbins, and new coauthor Edward Wasserman offer students an engaging introduction to the basic principles of Pavlovian conditioning, operant conditioning, and comparative cognition. The text s critical approach exposes students to the unresolved problems and controversies surrounding behavior theory and encourages them to interpret the material and make connections between theories and real-life situations. With several hundred new references, a new emphasis on comparative cognition, and expanded treatment of neuroscience and the neural basis of learning, the Fifth Edition sets the standard in its coverage of contemporary theory and research.