Book excerpt: In this unique work, eighteen of the most influential and significant figures in the various subareas of behavior therapy (from behavior analysis through cognitive therapy) are brought together to discuss their work and the sources and influences that affected it. At times moving, profound, and humorous, it casts a new and perhaps more human light on the most influential movement in behavioral health in the latter part of the 20th century. These intellectual biographies range in tone and intensity as each author uses their own particular style to convey their views about the field and their individual impact on it. For those interested in the behavioral and cognitive movement, this book is a must have since it is the only book to have chronicled the individual histories of the founders of the applied behavioral movement before they are lost forever.