The literature on optimal monetary policy in New Keynesian models under both commitment and discretion usually solves for the optimal allocations that are consistent with a rational expectations market equilibrium, but it does not study whether the policy can be implemented given the available...

Empirical evidence suggests that movements in international relative prices (such as the real exchange rate) are large and persistent. Nontraded goods, both in the form of final consumption goods and as an input into the production of final tradable goods, are an important aspect behind...

This paper examines whether monetary indicators are useful in implementing optimal discretionary monetary policy when the policy maker has incomplete information about the environment. We find that money does not contain useful information for the policy maker, if we calibrate the model to the...

Arguments in favor of Keynesian models as opposed to real business cycle models are often made on the grounds that the correlations and impulse response patterns found in the latter are inconsistent with the data. A recent and prominent example of this reasoning is Gali (1999). But certain...

The nature of price dynamics has long been thought important for the origin and duration of business cycles. To investigate this topic, we construct a dynamic stochastic general equilibrium macroeconomic model in which monopolistically competitive firms face fixed costs of changing the nominal...

This paper analyzes the effects of inflation variability on economic growth in a model where money is introduced via a cash-in-advance constraint. In this setting, we find that inflation adversely affects long-run growth, even when the cash-in-advance constraint applies only to consumption. At...

This paper studies the effects of fiscal policies -- depicted as stochastic changes in government spending and distortionary tax rates -- when the government cannot use lump sum taxes to achieve intertemporal budget balance. This framework contrasts the more standard analysis in which spending...

In this paper we document real rate behavior. We do this by looking across a wide variety of constructed real rate series. These series are obtained by using a number of different methodologies for estimating expected inflation, using several different price series, and looking over different...

Returning to a topic first systematically treated by Poole (1970) in a textbook Keynesian model, this paper compares interest rate and money supply rules. Our analysis, by contrast, is conducted within a rational expectations macro model that incorporates flexible prices and informational...