Before proceeding to the text itself it would be helpful to preview what is to follow; this would allow the reader to arrange the SUbsequent material into the pattern intended by the writer. The chapter is divided into several sections which have the function of moving from the more general to the highly specific. The first section deals with some broad issues surrounding the topic of attention. The second section, as a consequence of this earlier discussion, proposes some models for viewing the attentional process itself. The third section deals with the more specific issue of the relationships between normal intellectual functioning and attention while the last, and most specific section, deals with eNS dysfunction in infants and children and attention. This section is concerned therefore with the more specific consequences of SOfie of the broader, more theoretically oriented sections. The summary section integrates the entire chapter. studying Attention The study of attention, like much investigation in psychology, is not new, and often recurs as a theme. The terminology changes. Technology provides new instruments and more sensitive measures. But many of the problems remain the same (L~wis, 1967a). Preyer's work in the late 1880's (Preyer, 1888) serves as an example. As are an increasing number of contemporary researchers, he was deeply curious about infant behavior, specif-icallY, as his book title suggests, the Mind of the Child. Caref~reading of his work reveals a great interest in and study of attention as a means of investigating the development of the infant's mind. His observations wer~among the first descriptions of eye-hand regard, for example. Another example of early observations related to contemporary issues of attention are Darwin's (1897) writings on infancy. In a biographical sketch of an infant, Darwin observed that the infant's eyes became fixed and the movement of his arms ceased when he saw a brightly colored tassel. This observation antedates energetic and technological studies of attention in the infant by approximately 70 years. Neither for that matter is the general study of attention an innovation. William James (1890) devoted much energy to exploring the various properties of attention, and perhaps nowhere else can one find as lucid an exposition of the subject as in his Princip~es of Psychology_ \ .