This book brings together and assesses past and present research on information processing, and formulates a new general model of this entire system. Throughout his discussion, Cowan emphasizes that memory and attention cannot be considered independently and presents new research in psychophysiology, visual perception, cognitive development, and individual differences to support his thesis. This book offers both a review of the literature and a new model, and it will appeal to both the student and the professional interested in memory, attention, and cognitive psychology.