This paper attempts to identify the sources of real exchange rate fluctuations since the collapse of the Bretton Woods period. We use a structural VAR model with recursive long-run restrictions to decompose the real exchange rate series into three components, associated with supply, demand and...

In this paper we present a simple theory-based measure of the variations in aggregate economic efficiency: the gap between the marginal product of labor and the household’s consumption/leisure tradeoff. We show that this indicator corresponds to the inverse of the markup of price over social...

I discuss several lessons regarding the design and conduct of monetary policy that have emerged out of the New Keynesian research program. Those lessons include the bene.ts of price stability, the gains from commitment about future policies, the importance of nat- ural variables as benchmarks...

We provide evidence on the fit of the New Phillips Curve (NPC) for the Euro area over the period 1970-1998, and use it as a tool to compare the characteristics of European inflation dynamics with those observed in the U.S. We also analyse the factors underlying inflation inertia by examining the...

The purpose of the present paper is twofold. First, we characterize de Fed's systematic response to technology shocks and its implications for US output, hours and inflation. Second we evaluate the extent to which that responses can be accounted for by a simple monetary policy rule in the...

Economists, policy-makers, and the media often argue that the Maastricht Treaty and the Stability and Growth Pact make it difficult for governments of EMU countries to stabilize their economies with appropriate fiscal policy and to provide adequate public investment. Our empirical analysis...

I provide some new evidence that reinforces the conclusion in Galí (1999) that exogenous variations in technology play a very limited role, if any, as sources of the business cycle. First, I provide evidence that supports the identification of technology shocks proposed in that paper. Second, I...

We estimate a forward-looking monetary policy reaction function for the postwar United States economy, before and after Volcker's appointment as Fed Chairman in 1979. Our results point to substantial differences in the estimated rule across periods. In particular, interest rate policy in the...

This paper evaluates new evidence on price setting practices and inflation persistence in the euro area with respect to its implications for macro modelling. It argues that several of the most commonly used assumptions in micro-founded macro models are seriously challenged by the new findings.

The present paper describes recent research on two central themes of Keynes’ General Theory: (i) the social waste associated with recessions, and (ii) the effectiveness of fiscal policy as a stabilization tool. The paper also discusses some evidence on the extent to which fiscal policy has...