Edmund Sonuga-Barke is Professor of Developmental Psychopathology at the University of Southampton. His research has covered a wide field of developmental psychopathology and he is well known for his formulation, elaboration and testing of a distinctive neurocognitive approach to the problems of attention deficit and hyperactivity. His work has changed radically our understanding of ADHD: from a fixed deficit theory about attention to the modern view, based on several alterations of decision-making and response to reward, responsive to environmental change as well as constitution. He was the intellectual leader of the European ADHD Guidelines Group, whose reviews and conclusions have had a major impact on treatment in Europe, including NICE guidelines for the NHS.