The paper evaluates the performance of three popular monetary policy rules when the central bank is learning aboutthe parameter values of a simple New Keynesian model. The three policies are: (1) the optimal non-inertial rule; (2)the optimal history-dependent rule; (3) the optimal price-level...

The prominent role of monetary policy in the U.S. interwardepression has been conventional wisdom since Friedman andSchwartz [1963]. This paper presents evidence on both thesurprise and the systematic components of monetary policybetween 1929 and 1933. Doubts surrounding GDP estimates forthe...