"My experience is what I agree to attend to," wrote William James (1890) nearly a century ago in his Principles of Psychology. Although certainly not the first to recognize the importance of attention in man's experience--poets and philosophers throughout history have touched upon the concept in one way or another-James deserves credit for having accorded attention a central role in the systematic study of the mind. With the advancement of psychology since that time, except during the behaviorist digression, the concept of attention has been an integral part of many prominent theories dealing...