Leith and Wren-Lewis (2007) have shown that government debt is returned to its pre-shock level in a New Keynesian model under optimal discretionary policy. This has two important implications for monetary and fiscal policy. First, in a high-debt economy, it may be optimal for discretionary...

This paper studies the implications of adaptive learning in the modelling of international linkages in a two-region MSG-Cubed (MSG3) model built on micro-founded behaviours of firms and households. The nature of the transmission process under rational expectations versus the adaptive learning...

This paper proposes a simple framework that generalizes the timing structure of macroeconomic (as well as other) games. Building on alternative move games and models of "rational inattention" the players' actions may be rigid, ie optimally chosen to be infrequent. This rigidity makes the game...

Opponents of inflation targeting have argued that a commitment to a numerical inflation target reduces policy's stabilization flexibility - increasing output volatility under supply shocks. Using a novel game theoretic approach our paper demonstrates that this claim may fail to account for the...

The importance of the time-consistency poblem depends critically on the model one is working with and its parameterizations. This paper attempts to quantify the magnitude of stabilization bias for a small open economy using an empirically estimated micro-founded dynamic stochastic general...

Monetary and fiscal policies interact in many ways. Recently, the stance of fiscal policy in a number of countries (including the EU and the US) has raised concerns about risks for the outcomes of monetary policy. Our paper first shows that these concerns are justified since - under an ambitious...

This paper generalizes and qualifies an influential monetary policy result due to Rogoff (1985) by taking fiscal policy, and fiscal-monetary interactions, into account. It shows that an appointment of a conservative central banker may, under a range of circum- stances, (i) increase the average...

Discretionary policymakers cannot manage private-sector expectations and cannot coordinate the actions of future policymakers. As a consequence, expectations traps and coordination failures can occur and multiple equilibria can arise. To utilize the explanatory power of models with multiple...

This paper studies the behavior of a central bank that seeks to conduct policy optimally while having imperfect credibility and harboring doubts about its model. Taking the Smets-Wouters model as the central bank.s approximating model, the paper's main findings are as follows. First, a central...

We study the identification and estimation of first-price auction models with independent private values where bidders are risk averse and there is ambiguity about the valuation distribution. When bidders' preferences are represented by the maxmin expected utility of [Gilboa and Schmeidler,...