Dr. Sander van der Linden is a University Lecturer in Psychology, Director of the Cambridge Social Decision-Making Lab and a Fellow of Churchill College. His research interests include social perception, normative influence, the ?wisdom of crowds?, and the psychology of group consensus, risk, and polarization. He is especially interested in the evolution, spread, and influence of social norms in shaping prosocial behaviour and human cooperation. His research also explores (motivated) social cognition, the role of values, ideology, and culture in social judgement and decision-making, societal (risk) communication, and environmental psychology, especially as it relates to real-world social dilemmas such as climate change, public health and sustainability.