As an economic theorist, I'm interested in developing analytical tools and models to study a wide range of social and economic phenomena. Decision theory, in particular choice theory, is my first focus of interest. I aim to understand how individuals make their decisions. Mainstream economic theory assumes that individuals are rational; they are self-interested, fully informed about their own preferences and able to compare all possible options in a consistent way when making a decision. However both common sense and scientific evidence confirm that this indeed is not the case. There are many other factors that shape individual decision-making that cannot be simply explained by individual rationality. I aim to investigate those different mechanisms that are used by ‘boundedly rational’ individuals for decision-making. In particular, I am interested in the role of social influence/peer influence on individual behaviour. How do individuals influence each other’s behaviours? What are the mechanisms that we employ to influence each other? Can we disentangle the underlying influence only by looking at people’s behaviours?