Recurring change in a monetary policy function that maps endogenous variables into policy choices alters both the nature and the efficacy of the Taylor principle---the proposition that central banks can stabilize the macroeconomy by raising their interest rate instrument more than one-for-one in...

We determine optimal monetary policy under commitment in a forward-looking New Keynesian model when nominal interest rates are bounded below by zero. The lower bound represents an occasionally binding constraint that causes the model and optimal policy to be nonlinear. A calibration to the U.S....

Foreword / Esther L. George -- Introduction / Jonathan L. Willis -- The moderators - James Poterba, Erica L. Groshen -- Customer markets and financial frictions: implications for inflation dynamics / Simon Gilchrist, Egon Zakrajšek -- Commentary / Peter J. Klenow -- The international price...