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Monetary Policy and the Predictability of Nominal Exchange Rates
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Year: 2017 Publisher: Cambridge, Mass. National Bureau of Economic Research

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Abstract

This paper documents two facts about the behavior of floating exchange rates in countries where monetary policy follows a Taylor-type rule. First, the current real exchange rate is highly negatively correlated with future changes in the nominal exchange rate at horizons greater than two years. This negative correlation is stronger the longer is the horizon. Second, for most countries, the real exchange rate is virtually uncorrelated with future inflation rates both in the short and in the long run. We develop a class of models that can account for these and other key observations about real and nominal exchange rates.


Digital
Does the New Keynesian Model Have a Uniqueness Problem?
Authors: --- ---
Year: 2018 Publisher: Cambridge, Mass. National Bureau of Economic Research

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This paper addresses whether non-uniqueness of equilibrium is a substantive problem for the analysis of fiscal policy in New-Keynesian (NK) models at the zero lower bound (ZLB). There would be a substantive problem if there were no compelling way to select among different equilibria that give different answers to critical policy questions. We argue that learnability provides such a criterion. We study a fully non-linear NK model with Calvo pricing frictions. Our main finding is that the model we analyze has a unique E-stable rational expectations equilibrium at the ZLB. That equilibrium is also stable-under-learning and inherits all of the key properties of linearized NK models for fiscal policy.

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