Search Results
Discussion Paper
Productive externalities and business cycles
This paper begins with the observation that the volatility of factor input growth is insufficient to explain the volatility in the growth rate of output, and explores the empirical plausibility of the hypothesis that this fact is due to the presence of productive externalities and increasing returns to scale. We construct a quantitative equilibrium macroeconomic model which incorporates these features, and allows for demand shocks operating at the level of the consumer. We employ the method of Hall (1986) and Parkin (1988) to measure these demand shocks, and use these measured disturbances to ...
Working Paper
The pitfalls of discretionary monetary policy.
In a canonical staggered pricing model, monetary discretion leads to multiple private sector equilibria. The basis for multiplicity is a form of policy complementarity. Specifically, prices set in the current period embed expectations about future policy, and actual future policy responds to these same prices. For a range of values of the fundamental state variable ? a ratio of predetermined prices ? there is complementarity between actual and expected policy, and multiple equilibria occur. Moreover, this multiplicity is not associated with reputational considerations: it occurs in a ...
Working Paper
Sticky prices, money, and business fluctuations
Can nominal contracts create monetary nonneutrality if they arise endogenously in general equilibrium? Yes, if (1) agents have complete information about the money stock and (2) shocks to the system are purely redistributive and private information, precluding conventional insurance markets. Without contracts, money is neutral toward aggregate quantities. However, risk-sharing between suppliers and demanders creates an incentive for both parties to use nominal contracts. in particular, if an increase in the money growth rate signals a rise in the dispersion of shocks to demanders' wealth, ...
Working Paper
Informational implications of interest rate rules
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 frictions. With differential information, interest rate targets can affect the information content of market prices and real activity, but these real consequences can always be replicated by an appropriately chosen money stock rule with feedback to economic activity. However, when the policy authority has ...
Working Paper
Monetary discretion, pricing complementarity and dynamic multiple equilibria
In a plain-vanilla New Keynesian model with two-period staggered price-setting, discretionary monetary policy leads to multiple equilibria. Complementarity between the pricing decisions of forward-looking firms underlies the multiplicity, which is intrinsically dynamic in nature. At each point in time, the discretionary monetary authority optimally accommodates the level of predetermined prices when setting the money supply because it is concerned solely about real activity. Hence, if other firms set a high price in the current period, an individual firm will optimally choose a high price ...
Working Paper
The new neoclassical synthesis and the role of monetary policy
Macroeconomics is moving toward a New Neoclassical Synthesis, which like the synthesis of the 1960s melds Classical with Keynesian ideas. This paper describes the key features of the new synthesis and its implications for the role of monetary policy. We find that the New Neoclassical Synthesis rationalizes an activist monetary policy which is a simple system of inflation targets. Under this "neutral" monetary policy, real quantities evolve as suggested in the literature on real business cycles. Going beyond broad principles, we use the new synthesis to address several operational aspects of ...
Working Paper
A note on the neutrality of temporary monetary disturbances
In the classical macroeconomic models constructed by Lucas (1972, 1975) and Barro (1976), monetary aggregates are assumed to be generated by a logarithmic random walk. This specification implies that all monetary growth is (a) unanticipated and (b) permanent.
Journal Article
Inflation Targeting in a St. Louis Model of the 21st Century
Journal Article
Rational expectations business cycle models: a survey
Development of rational expectations models of the business cycle has been the central issue in macroeconomics over the last 15 years. The postulate that expectations are rational imposes considerable discipline on business cycle analysis. In this essay we review the current literature on rational expectations models of business cycles with specific attention focused on the extent to which the rational expectations perspective has generated a new understanding of economic fluctuations.
Journal Article
Inflation targeting in a St. Louis model of the 21st century