Mark H. Johnson is Director of the Centre for Brain and Cognitive Development at Birkbeck College, University of London, and an MRC Senior Research Scientist. He has published over one hundred scholarly articles and four books on brain and cognitive development, including Developmental Cognitive Neuroscience: An Introduction (1997). He is also on the editorial board of several developmental journals and book series. Yuko Munakata is currently an Assistant Professor in Developmental Cognitive Neuroscience at the University of Denver. Her interests include memory development, dissociations in behavior during development and following brain damage, and neural network models of cognitive development. Rick O. Gilmore is Assistant Professor of Psychology at Pennsylvania State University. His research focuses on the development of spatial perception and memory in infancy and their relationship to brain development.