Mental health researchers, many of them with the US Air Force, explore how the concepts and findings regarding mental fatigue that have been accumulating since the late 19th century are undergoing a significant change among people who experience ubiquitous stimulation through electronic devices or longer working hours. After reviewing the century of research, they cover sleep and fatigue; neurological and physiological aspects of fatigue; motivation, personality, and subjective fatigue; and work and other applications. Among the topics are sleep loss and the ability to self-monitor cognitive performance, the temporal dynamics and underlying mechanisms of cognitive fatigue, a motivational control theory of cognitive fatigue, and the role of psychological detachment in recovery from fatigue. The 14 papers are from a May 2009 conference in Atlanta, Georgia. Annotation ©2010 Book News, Inc., Portland, OR (booknews.com)