Her past work has focused on how children across societies acquire and enforce norms of cooperation, with a particular focus on children’s emerging understanding of fairness. More recently she has begun to study the psychology of virtue from a developmental and cross-cultural perspective, specifically investigating the mechanisms that promote honesty, fairness, forgiveness and trustworthiness in children and adults alike. She complements these lines of work with a comparative approach, examining how nonhuman animals solve cooperative dilemmas. She received a BSc in Marine Biology from Dalhousie University, an MPhil in Biological Anthropology from Cambridge University and a PhD in Human Evolutionary Biology from Harvard University.