Brian Hedden’s research focuses primarily on the nature of rationality, including rational belief-formation and rational decision-making. There, he has written on time-slice-centric conceptions of rationality, the debate over evidential and causal decision theories, hindsight bias, Dutch Book arguments, and the objectivity of evidential support. He also works on related areas of ethics and political philosophy, including collective action problems, algorithmic fairness, and legal evidence.