Neuroscientist known for asking some of the most challenging questions in 21st century neuroscience - and conceiving innovative ways to find the answers. Principle questions focus on the biological mechanisms that underlie decision-making in social environments, the grasp of which has broad-scale implications for improving health and welfare in societies worldwide. Broad expertise in psychology, economics, evolutionary biology and ethology, in addition to collaborations with colleagues in these fields, have enabled him to reach ever-deeper levels of understanding about the neural bases of cognitive behaviour.