This book aims to help lay a scientific foundation for an applied psychology concerned with the human users of interactive computer systems. It presents the results of some of the main strands of the Applied Information-Processing Psychology Project group's research. "...highly recommended for its success in providing a cognitive model of user behavior which can be clearly translated into practical design tools. Furthermore, the fully comprehensive and easy to follow presentation will appeal to a wide range of audiences for whom the editors intend it."—Applied Ergonomics"This is a book that is designed not just to be read but to be used -- through discussion, study, and prolonged reflection....[it] successfully explores several ways in which computer science, engineering, and psychology can be integrated into a single theory for human-computer interaction."—Computing