Torkel Klingberg, MD, PhD; Professor of Cognitive Neuroscience, Stockholm Brain Institute, Karolinska Institute, Sweden; Founder, Cogmed; author of The Overflowing Brain: Information Overload and the Limits of Working Memory (2009) and “Training and transfer effects of executive functions in preschool children” (2008, Developmental Science); co-author of “Training of working memory in children with ADHD” (2002, Journal of Clinical and Experimental Neuropsychology)