Philip David Zelazo is Professor of Psychology at the University of Toronto, where he holds a Canada Research Chair in Developmental Neuroscience. He is also Co-Director of the Sino-Canadian Centre for Research in Child Development, Southwest University, China. He was Founding Editor of the Journal of Cognition and Development. His research, which is funded by both NSERC of Canada and CIHR, focuses on the mechanisms underlying typical and atypical development of executive function - the conscious self-regulation of thought, action, and emotion.