Bullard, James; Evans, George W.; Honkapohja, Seppo - In: American Economic Review 98 (2008) 3, pp. 1163-77
We study how the use of judgment or "add-factors" in macroeconomic forecasting may disturb the set of equilibrium outcomes when agents learn using recursive methods. We examine the possibility of a new phenomenon, which we call exuberance equilibria, in the New Keynesian monetary policy...