Originally published in 1985, this volume presents the proceedings of the 11th International Symposium on Attention and Performance. With few exceptions, the central emphasis in previous meetings of the Attention and Performance Association was on the information-processing approach to normal human cognition. This emphasis had been supplemented, on occasion, by studies employing EEG methods, but there had not been systematic attempts to relate the information-processing approach to work in the neurosciences.This volume seeks to emphasize the search for mechanism with such methods of approach as the following: anatomical, physiological, neuropsychological, behavioral, and computational. The editors believed that this was in accord with recent developing trends in cognition and particularly with developments in the study of attention at the time.