The papers in this volume examine the state of the art in key areas of developmental cognitive neuroscience, focusing on theoretically driven research on cognition and its development. The past decade has seen an increasing number of empirical papers on the relationship between brain and cognitive development. But despite the clearly burgeoning interest in this topic, there is a relative paucity of work motivated by deep theoretical questions about the nature of cognition and its development. Many papers are still in the mode of reporting brain-cognition correlations with a focus on...