Originally published in 1979, this volume represented a unique attempt to connect the usually separated fields of infancy studies and studies of older children. In each chapter, eminent research workers attempt to cross the theoretical, empirical, and methodological barriers that had traditionally separated the study of preverbal infants from the study of verbal children and adults at the time. These completely new and original contributions traced the developmental links between birth and conversation within three major categories: perceptual, cognitive, and language development. Although the chapters range from reports of well-defined research areas to theoretical propositions, the aim throughout was to relate the events of the first year of life to the child's later perceptual and cognitive activity. This book will still be of interest for all concerned with child development and related areas, in that it demonstrates the remarkable range of observations about infants brought under a single guiding set of questions about continuity, stability, and the sources of change during and after the first year of life.