Kast, Robert; Lapied, André; Toquebeuf, Pascal - HAL - 2009
This paper studies learning under multiple priors by characterizing the decision maker's attitude toward information … pessimism to a dynamic set-up. A pessimistic (max-min expected utility) decision maker will be credulous when learning bad news … but incredulous when learning good news.Conversely, an optimistic (max-max expected utility) decision maker will be …