Behavioural economics — and at its core game theory — provide a powerful tool for predicting and explaining human social behaviour. As such, it has been viewed as a unifying force able to bring together politics, economics, sociology, anthropology. In this course we will examine the assumptions about human psychology made by behavioural economists, and investigate questions raised by examining those assumptions: e.g. What does it mean to be a rational agent? What are preferences and how stable are they? How do we know our own and others’ preferences?