The next, and longest, section covers the behavioral perspective, which views behavior as a function of physiological drive, learning, and ultimately personal choice. McHugh and Slavney examine eating disorders, suicide, and, most controversially, "hysteria." Some readers may disagree strongly with their approach to dissociative disorders, in particular "multiple personality," which they view as dysfunctional behavior. Although in general, I agree with the authors, I feel this example distracts from the overall theme of the book.