I am interested in the evolutionary and cognitive basis of social phenomenon. My research mostly focuses on the origins of morality. Inspired by contractualist theories, I have explored the idea that morality is based on fairness and aims at sharing the costs and beneﬁts of social interactions in a mutually advantageous way. With my colleagues, I have developed this idea in evolutionary biology, experimental psychology, cognitive anthropology and moral philosophy. Recently, I have also studied the importance of fairness in explaining moral religions and designing public policies.