Denis Mareschal obtained his first degree from King's College Cambridge in Natural Science with a specialisation in physics and theoretical physics. He then went on to obtain a Masters in psychology from McGill University with a thesis on the computational modelling of cognitive development. Finally, he obtained a DPhil in Psychology from the University of Oxford for a thesis combining neural network modelling and the experimental testing of infant-object interactions. He took up an initial lecturing position at the University of Exeter (UK) in 1995 and moved to Birkbeck University of London in 1998 where he has been ever since. He was made professor in 2006. Mark H. Johnson is Professor of Psychology and Director of the Centre for Brain & Cognitive Development at Birkbeck, University of London, and a MRC Scientific Team Leader. He received his BSc in Biological Sciences at the University of Edinburgh, Scotland, and his PhD in Neurobiology from the University of Cambridge, UK. Following this training he was appointed Research Scientist (1985-90), and then Senior Research Scientist (1993-98) at the Medical Research Council Cognitive Development Unit, London. From 1989 to 1990 he was also Visiting Assistant Professor at the University of Oregon, Eugene, and from 1991 to 1995 Associate Professor of Psychology at Carnegie Mellon University, Pittsburgh. He has published over 150 scholarly articles and 8 books on brain and cognitive development in human infants and other species, and is Co-Editor of the international journal Developmental Science. Sylvain Sirois' research is mainly concerned with the mechanisms of learning and development, which he studies through a combination of neurally-inspired neural network models, robotics, and empirical studies with babies, children, adults, and the elderly. Michael Spratling received a BEng. degree in Engineering Science from Loughborough University, and MSc and Ph.D. degrees in Artificial Intelligence and Neural Computation from the University of Edinburgh. He has held several research positions, both in psychology and in engineering, including a postdoctoral research fellowship in the Centre for Brain and Cognitive Development at Birkbeck College, University of London. He was appointed as a lecturer in the Division of Engineering at King's College London in 2004. Michael Thomas completed his D.Phil. in Experimental Psychology at University of Oxford in 1997. His principal research interests are in cognitive and language development, with a focus on developmental disorders. For more detail, see http://www.psyc.bbk.ac.uk/research/DNL/ Gert Westermann received his Diploma in Computer Science from the University of Braunschweig in Germany (he also spent a year at the University of Texas at Austin) and went on to do a PhD in Cognitive Science at the University of Edinburgh. Following this he worked as a researcher at the Sony Computer Science Laboratory in Paris and subsequently took up a Research Fellowship at Birkbeck College in London. He is now a Senior Lecturer in Psychology at Oxford Brookes University. During 2005-2006 he is on sabbatical in the Department of Experimental Psychology at the University of Oxford.