This edition of the best-selling textbook on Work Motivation in Organizational Behavior provides an update of the critical analysis of the scientific literature on this topic, and provides a highly integrated treatment of leading theories, including their historical roots and progression over the years. A heavy emphasis is placed on the notion that behavior in the workplace is determined by a mix of factors, many of which are not treated in texts on work motivation (such as frustration and violence, power, love, and sex). Examples from current and recent media events are numerous, and intended to illustrate concepts and issues related to work motivation, emotion, attitudes, and behavior.