The theory of information integration provides a unified approach to the three disciplines of cognitive, social and developmental psychology. This volume illustrates how the concepts and methods of this theory may be productively applied to core problems in developmental psychology. "The scope, depth, refined statistical and methodological sophistication, penetrating critiques, and systematic development and extension of information integration theory and functional measurement that have made Norman Anderson a giant of our time are displayed once again in this book....no one since Piaget has approached so diverse a collection of important areas of psychology and brought such an integrated perspective that unites and illuminates them all....The book is rich in ideas and provides a powerful alternative to the prevailing approaches in developmental psychology....What we have here is an important contribution to developmental psychology."—American Journal of Psychology