The dynamic inconsistency of a government's preferred policy, when it occurs, usually implies that the maximum level of welfare that can be delivered at some initial time can only be attained by constraining the economy to `low' levels in the future. In this paper, we set up a linear quadratic...

It has been recognized that the optimal strategy of a government is generally time-inconsistent: optimality requires that the government take into account expectations effects in the formulation of its policy and to ignore these effects when applying the policy. In order to analyse the problem,...

The authors study different solutions to a simple one-dimensional linear qua dratic game with a large number of private agents and a government. A "time-consistent" solution is defined as a solution to the Hamilton- Jacobi-Bellman equation, i.e., as a policy for which the government has no...

We analyze a two-country zone facing a joint inflationary shock and responding with coordinated and uncoordinated monetary and fiscal policies. We show that the standard presumption that the absence of coordination results in an excessive exchange rate appreciation of the zone with respect to...

I argue in this paper that the `speed of convergence' estimated in recent works on `convergence' does not capture `actual' convergence towards a steady state, but rather conditional dynamics towards a moving target. Although this conditional convergence can be taken to imply that there are...

During the XXth century, life expectancy levels have converged across the world. Yet, macroeconomic studies, as Acemoglu and Johnson (2007), estimate that improvements in health have no impact on growth or any factors of growth; in particular, they find no impact of life expectancy increases on...

Why do countries default? This seemingly simple question has yet to be adequately answered in the literature. Indeed, prevailing modelling strategies compel the to choose between two unappealing model features: depending on the cost of default selected by the modeler, either the debt ratios are...