Cognitive development research as a field of developmental science has existed for almost a century. During this time, particularly in the last 50 years, tremendous advances have been made in our understanding of how the child's mind works.Like any other field of scientific enquiry, cognitive development research is constantly evolving, undergoing its own exciting developments. Childhood Cognitive Development: The Essential Readings introduces the reader to this dynamic subject and to some of the current research controversies. Each of the articles has been chosen for its clear reflection of the evolution and diversity of research and thinking within the area of cognitive development, together with its accessibility to students at all levels. Written by leading researchers such as Jean Piaget, John Flavell, and Uta Frith, the articles are both introduced and contextualized by the editor, and suggestions for further reading give students an ideal starting point for the exploration of the key topics in childhood cognitive development.