A striking fact about pricing is the prevalence of \sales": large temporary price cuts followedby prices returning exactly to their former levels. This paper builds a macroeconomic modelwith a rationale for sales based on firms facing customers with different price sensitivities.Even if firms...

In a country with high probability of default, higher interest rates may render the currency lessattractive if sovereign default is costly. This paper develops that intuition in a simple model andestimates the effect of changes in interest rates on the exchange rate in Brazil using data from...

Recent literature on the design of optimal monetary policy has shown that deviations fromprice stability are small whenever prices are sticky. This paper reconsiders this issue byintroducing capital accumulation in the model. Optimal monetary policy in this setupimplies small deviations from...

This paper computes welfare-maximizing monetary and tax policy feedback rules in acalibrated dynamic general equilibrium model with sticky prices. The government makesexogenous final good purchases, levies a proportional income tax, and issues nominalone-period bonds. A quadratic approximation...

We extend the Carlstrom and Fuerst (American Economic Review,1997, 87, pp. 893–910) agency cost model of business cycles by includingtime-varying uncertainty in the technology shocks that affectcapital production. We first demonstrate that standard linearizationmethods can be used to solve the...

In the data, individual prices change frequently and by large amounts. In standardsticky price models, frequent and large price changes imply a fast response of the aggregate price level to nominal shocks. This paper presents a model in which price setting firms optimally decide what to observe,...

Is the Chinese growth miracle - a remarkably high growth rate sustained for over twodecades - likely to persist or are the seeds of its eventual demise contained in the policiesthat have boosted growth? For all its presumed flaws, the particular approach tomacroeconomic and structural policies...

Die Frage nach der Kausalität fällt in die Methodologie. Methodologie ist in denWirtschaftswissenschaften ein Bereich, der sowohl bei Ökonomen als auch bei Philosophenkaum Beachtung findet. ....

The paper evaluates the performance of three popular monetary policy rules when the central bank is learning aboutthe parameter values of a simple New Keynesian model. The three policies are: (1) the optimal non-inertial rule; (2)the optimal history-dependent rule; (3) the optimal price-level...