In this episode, we talk with Ned Augenblick from the University of Berkeley Haas School of Business about his paper with Matthew Rabin entitled “Belief Movement, Uncertainty Reduction, & Rational Updating”. This paper analyzes the relationship between (i) the movement in the beliefs of a Bayesian updater when new information arrives, and (ii) the associated reduction in his uncertainty. This relationship is used to develop statistical tests of rational updating that are then applied to datasets of beliefs.