Search Results
Working Paper
Search in asset markets
We investigate how trading frictions in asset markets affect portfolio choices, asset prices and efficiency. We generalize the search-theoretic model of financial intermediation of Duffie, Grleanu and Pedersen (2005) to allow for more general preferences and idiosyncratic shock structure, unrestricted portfolio choices, aggregate uncertainty and entry of dealers. With a fixed measure of dealers, we show that a steady-state equilibrium exists and is unique, and provide a condition on preferences under which a reduction in trading frictions leads to an increase in the price of the asset. We ...
Working Paper
Friedman meets Hosios: efficiency in search models of money
In this paper the authors study the inefficiencies of the monetary equilibrium and optimal monetary policies in a search economy. They show that the same frictions that give fiat money a positive value generate an inefficient quantity of goods in each trade and an inefficient number of trades (or search decisions). The Friedman rule eliminates the first inefficiency, and the Hosios rule the second. A monetary equilibrium attains the social optimum if and only if both rules are satisfied. When the two rules cannot be satisfied simultaneously, which occurs in a large set of economies, optimal ...
Journal Article
The tale of Gresham's law
Gresham?s law, which says that bad money tends to drive good money out of circulation, may account for many nations? episodes of money troubles, as far back as ancient Athens. This Commentary discusses the two main explanations for Gresham?s law and suggests some circumstances in which the law does not apply.
Working Paper
On the recognizability of money
This paper develops a model of currency circulation under asymmetric information. Agents are heterogeneous and trade in bilateral matches. Coins are intrinsically valuable and are available in two weights, light and heavy. We characterize the equilibrium under complete information and under imperfect information about the quality of coins. We determine a set of conditions under which the two currencies circulate and are traded according to different terms of trade. We study how output, welfare, and the velocity of currency are affected by the recognizability of coins. We show that society's ...
Working Paper
The cost of inflation: a mechanism design approach
I apply mechanism design to quantify the cost of inflation that can be attributed to monetary frictions alone. In an environment with pairwise meetings, the money demand that is consistent with a constrained-efficient allocation takes the form of a continuous correspondence that can fit the data over the period 1900-2006. For such parameterizations, the cost of moderate inflation is zero. This result is robust to different assumptions regarding the observability of money holdings, the introduction of match-specific heterogeneity, and endogeneous participation decisions.
Journal Article
Coordination failures in the labor market
Can two countries, or two different states, with similar technologies, resources, and policies exhibit differences in labor market performance? In contrast to a commonly held view, the answer is yes under some conditions that we review in this Commentary. If these conditions are satisfied, the unemployment rate and the production of an economy can fluctuate even in the absence of shocks. Moreover, government intervention can be useful provided that it coordinates the economy on the preferred outcome.
Discussion Paper
Inflation and welfare: a search approach
This paper extends recent findings in the search-theoretic literature on monetary exchange regarding the welfare costs of inflation. We present first estimates of the welfare cost of inflation using the "welfare triangle" methodology of Bailey (1958) and Lucas (2000). We then derive a money demand function from the search-theoretic model of Lagos and Wright (2005) and we estimate it from U.S. data over the period 1900-2000. We show that the welfare cost of inflation predicted by the model accords with the welfare-triangle measure when pricing mechanisms are such that buyers appropriate ...
Working Paper
On the threat of counterfeiting
We study counterfeiting of currency in a search?theoretic model of monetary exchange. In contrast to Nosal and Wallace (2007), we establish that counterfeiting does not pose a threat to the existence of a monetary equilibrium; i.e., a monetary equilibrium exists irrespective of the cost of producing counterfeits, or the ease with which genuine money can be authenticated. However, the possibility to counterfeit ?at money can affect its value, velocity, output and welfare, even if no counterfeiting occurs in equilibrium. We provide two extensions of the model under which the threat of ...
Journal Article
Rethinking the welfare cost of inflation
New models of monetary economies, developed in the last 15 years, suggest that traditional measures of the welfare cost of inflation may underestimate the true loss that inflation inflicts on society. According to these models, the cost of 10 percent inflation ranges from 1 to 5 percent of real income.
Working Paper
A Tractable Model of Monetary Exchange with Ex-Post Heterogeneity
We construct a continuous-time, New-Monetarist economy with general preferences that displays an endogenous, non-degenerate distribution of money holdings. Properties of equilibria are obtained analytically and equilibria are solved in closed form in a variety of cases. We study policy as incentive-compatible transfers financed with money creation. Lump-sum transfers are welfare-enhancing when labor productivity is low, but regressive transfers achieve higher welfare when labor productivity is high. We introduce illiquid government bonds and draw implications for the existence of ...