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Working Paper
The long-run real effects of monetary policy: Keynesian predictions from a neoclassical model
In this paper we integrate Diamond's (1965) model of neoclassical production and capital with Wallace's (1984) model of monetary policy in order to study the real effects of two types of monetary policy actions: open market operations and changes in reserve requirements. We show that a permanent easing of open market or reserve policy can produce permanent increases in both the inflation rate and the level (but not the growth rate) of output. We also describe conditions under which the effects of these policies on real interest rates and output can be large relative to their effects on the ...
Discussion Paper
Keynesian conundrum: multiplicity and time consistent stabilization
This paper identifies a novel form of dynamic inconsistency of stabilization policy in increasing returns models that generate multiple equilibria. We present a two-period version of the Benhabib-Farmer (1994) externalities model and derive closed-form solutions for all endogenous variables in every perfect foresight equilibrium. We provide conditions under which the stabilization policy that maximizes time zero consumer welfare is not time consistent. Furthermore, we characterize the time consistent stabilization policy. Our results cast doubts on the usefulness of government coordination of ...
Journal Article
Rethinking the implications of monetary policy: How a transactions role for money transforms the predictions of our leading models
Over the past several decades, economists have devoted ever-growing effort to developing economic models to help us understand how changes in interest rates brought about by monetary policy actions affect the production and provision of goods and services in the economy. Although New Keynesian models have broad appeal in explaining how changes in the money stock can affect business activity, these models generate results that are inconsistent with what we know about how interest rates move with policy-induced changes in the money stock. In "Rethinking the Implications of Monetary Policy: ...
Journal Article
The new, new economics and monetary policy
Journal Article
John Maynard Keynes
Working Paper
Nonlinear adventures at the zero lower bound
Motivated by the recent experience of the U.S. and the Eurozone, the authors describe the quantitative properties of a New Keynesian model with a zero lower bound (ZLB) on nominal interest rates, explicitly accounting for the nonlinearities that the bound brings. Besides showing how such a model can be efficiently computed, the authors found that the behavior of the economy is substantially affected by the presence of the ZLB. In particular, the authors document 1) the unconditional and conditional probabilities of hitting the ZLB; 2) the unconditional and conditional probabilty distributions ...
Working Paper
Generalizing the Taylor principle
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 response to higher inflation. A monetary policy process is a set of policy rules and a probability distribution over the rules. We derive restrictions on that process that satisfy a long-run Taylor principle and deliver unique equilibria in two standard models. A process can satisfy the Taylor ...
Working Paper
Is Keynesian economics a dead end?
Working Paper
Supply-side policies and the zero lower bound
This paper examines how supply-side policies may play a role in fighting a low aggregate demand that traps an economy at the zero lower bound (ZLB) of nominal interest rates. Future increases in productivity or reductions in mark-ups triggered by supply-side policies generate a wealth effect that pulls current consumption and output up. Since the economy is at the ZLB, increases in the interest rates do not undo this wealth effect, as we will have in the case outside the ZLB. The authors illustrate this mechanism with a simple two-period New Keynesian model. They discuss possible objections ...
Working Paper
New-Keynesian Trade: Understanding the Employment and Welfare Effects of Trade Shocks
There is a growing empirical consensus that trade shocks can have important effects on unemployment and nonemployment across local-labor markets within an economy. This paper introduces downward nominal wage rigidity to an otherwise standard quantitative trade model and shows how this framework can generate changes in unemployment and nonemployment that match those uncovered by the empirical literature studying the “China shock.” We also compare the associated welfare effects predicted by this model with those in the model without unemployment. We find that the China shock leads to ...