#60;b#62;Mark H. Johnson#60;/b#62; is Professor of Psychology, MRC Scientific Team Leader, and Director of the Centre for Brain and Cognitive Development at Birkbeck College, University of London. He is an editor of the Wiley-Blackwell journal #60;i#62;Developmental Science,#60;/i#62; and is considered to be among the world's leading scholars in human brain development.#60;p#62;#60;b#62;Michelle de Haan#60;/b#62; is Reader in Developmental Cognitive Neuroscience in the Institute of Child Health at University College London, and Honorary Principal Neuropsychologist for Great Ormond Street Hospital for Children NHS Trust. Her research applies neuroimaging and neuropsychological methods to… understand typical and atypical cognitive and social development.