Johanna Thoma has been an Assistant Professor in the Department of Philosophy, Logic and Scientific Method since 2016. Prior to that, she completed her PhD in philosophy at the University of Toronto under the supervision of Sergio Tenenbaum, after studying philosophy, economics and politics at Oxford University and Erasmus University Rotterdam.

Johanna works on practical rationality and decision theory, economic methodology, as well as ethics and public policy evaluation. Much of her work falls at the intersection of economics and philosophy. Recently, she has been especially interested in whether expected utility theory can be defended as a theory of instrumental, or means-ends rationality, and if it can't, whether alternatives to expected utility theory will do better. This project has allowed her to make contributions to debates on dynamic choice, self-control and temptation, the nature of risk aversion, the framing of decision problems, precautionary policy-making, and revealed preference methodology in economics.

Johanna also teaches at LSE's School of Public Policy.