Her research focuses on consumer choice, with a particular interest in nonparametric methods and revealed preference theory. Damian Clarke is a DPhil (PhD) student in economics at the University of Oxford, with research focusing on maternal and child health and education, fertility and family size, and applied microeconometrics. Damian has worked for a range of international organisations and government bodies in Latin America and in West Africa. Simon Quinn is an Associate Professor of Economics and a Deputy Director of the Centre for the Study of African Economies at the University of Oxford. Simon's research interests lie primarily in the study of firms and development.