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Discussion Paper
Should We Worry About Excess Reserves?
Banks in the United States have the potential to increase liquidity suddenly and significantly?from $12 trillion to $36 trillion in currency and easily accessed deposits?and could thereby cause sudden inflation. This is possible because the nation?s fractional banking system allows banks to convert excess reserves held at the Federal Reserve into bank loans at about a 10-to-1 ratio. Banks might engage in such conversion if they believe other banks are about to do so, in a manner similar to a bank run that generates a self-fulfilling prophecy. {{p}} Policymakers could guard against this ...
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Private monitoring with infinite histories
This paper develops new recursive methods for studying stationary sequential equilibria in games with private monitoring. We first consider games where play has occurred forever into the past and develop methods for analyzing a large class of stationary strategies, where the main restriction is that the strategy can be represented as a finite automaton. For a subset of this class, strategies which depend only on the players? signals in the last k periods, these methods allow the construction of all pure strategy equilibria. We then show that each sequential equilibrium in a game with infinite ...
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Reputation and Sovereign Default
This paper presents a continuous-time model of sovereign debt. In it, a relatively impatient sovereign government?s hidden type switches back and forth between a commitment type, which cannot default, and an optimizing type, which can default on the country?s debt at any time, and assume outside lenders have particular beliefs regarding how a commitment type should borrow for any given level of debt and bond price. We show that if these beliefs satisfy reasonable assumptions, in any Markov equilibrium, the optimizing type mimics the commitment type when borrowing, revealing its type only by ...
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Sequential equilibria in a Ramsey tax model
This paper presents a full characterization of the equilibrium value set of a Ramsey tax model. More generally, it develops a dynamic programming method for a class of policy games between the government and a continuum of consumers. By selectively incorporating Euler conditions into a strategic dynamic programming framework, we wed two technologies that are usually considered competing alternatives, resulting in a dramatic simplification of the problem.
Report
Public trust and government betrayal
This paper presents a simple model of government reputation which captures two characteristics of policy outcomes in less developed countries: governments which betray public trust do so erratically, and, after a betrayal, public trust is regained only gradually.
Working Paper
Speculative runs on interest rate pegs the frictionless case
In this paper we show that interest rate rules lead to multiple equilibria when the central bank faces a limit to its ability to print money, or when private agents are limited in the amount of bonds that can be pledged to the central bank in exchange for money. Some of the equilibria are familiar and common to the environments where limits to money growth are not considered. However, new equilibria emerge, where money growth and inflation are higher. These equilibria involve a run on the central bank's interest target: households borrow as much as possible from the central bank, and the ...
Journal Article
Explaining the fiscal theory of the price level
Many traditional macroeconomic models do not have determinate predictions for the path of inflation: even for a given specification of money supplies, many paths of inflation are consistent with equilibrium. According to the fiscal theory of the price level, fiscal policy can be used to select which of these many paths actually occur. This article explains the fiscal theory of the price level and discusses its empirical and policy implications. The article argues that the theory is equivalent to giving the government an ability to choose among equilibria.
Discussion Paper
On the Ethics of Redistribution
Analysts of optimal policy often advocate for redistributive policies within developed economies using a behind-the-veil-of-ignorance criterion. Such analyses almost invariably ignore the effects of these policies on the well-being of people in poor countries. We argue that this approach is fundamentally misguided because it violates the criterion itself.
Working Paper
Tax riots
This paper considers an optimal taxation environment where household income is private information, and the government randomly audits and punishes households found to be underreporting. We prove that the optimal mechanism derived using standard mechanism design techniques has a bad equilibrium (a tax riot) where households underreport their incomes, precisely because other households are expected to do so as well. We then consider three alternative approaches to designing a tax scheme when one is worried about bad equilibria.
Working Paper
A simple model of bank employee compensation
This paper considers the question, Does the limited liability associated with banking make it necessary for a government to regulate bank employee compensation? It attempts to shed light on this question by considering a mechanism design framework.