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Working Paper
Private and public circulating liabilities
Changes in the legal and technological environment in the U.S. have created the possibility of private banknote issue, or its electronic equivalent. We wish to understand the implications of this possibility for economic performance. Accordingly, we construct and analyze a dynamic general equilibrium model in which privately-issued liabilities may circulate, either by themselves, or alongside a stock of outside money. In each case we provide results on the existence and multiplicity of equilibria, and we characterize local dynamics in a neighborhood of a steady state. Our results support ...
Working Paper
Unemployment, migration, and growth
Economic development is typically accompanied by a very pronounced migration of labor from rural to urban employment. This migration, in turn, is often associated with large scale urban underemployment. Both factors appear to play a very prominent role in the process of development. We consider a model in which rural-urban migration and urban underemployment are integrated into an otherwise conventional neoclassical growth model. Unemployment arises not from any exogenous rigidities, but from an adverse selection problem in labor markets. We demonstrate that, in the most natural case, ...
Working Paper
The effects of open market operations in a model of intermediation and growth
We examine a standard model of capital accumulation in which spatial separation and limited communication create a role for money and shocks to portfolio needs create a role for banks. In this context we examine the existence, multiplicity, and dynamical properties of monetary equilibria with positive nominal interest rates. Moderate levels of risk aversion can lead to the existence of multiple monetary steady states, all of which can be approached from a given set of initial conditions. In addition, even if there is a unique monetary steady state, monetary equilibria can be indeterminate, ...
Working Paper
The value of inside and outside money: expanded version
We study dynamic economies in which agents may have incentives to hold both privately-issued (a.k.a. inside) and publicly-issued (a.k.a. outside) circulating liabilities as part of an equilibrium. Our analysis emphasizes spatial separation and limited communication as frictions that motivate monetary exchange. We isolate conditions under which a combination of inside and outside money does and does not allow the economy to achieve a first-best allocation of resources. We also study the extent to which the use of private circulating liabilities alone, or the use of public circulating ...
Working Paper
Limited information, money, and competitive equilibrium
In an overlapping generations model with borrowing and lending, uncertainty, and asymmetric information, fiat money may be essential to the existence of a competitive equilibrium. It may also serve to enhance the information of economic agents in a well-defined sense. In addition, the model presented provides suggestions about why the presence of valued fiat currency is essential to existence of equilibrium, even though in equilibrium perfect substitutes for money may exist.
Working Paper
Socially excessive bankruptcy costs and the benefits of interest rate ceilings on loans
The authors study the capital accumulation and welfare implications of ceilings on loan interest rates in a dynamic general equilibrium model. Binding ceilings on loan rates reduce the probability of bankruptcy. Lower bankruptcy rates result in lower bankruptcy and liquidation costs. The authors state conditions under which the resources freed by this cost-saving result increase the steady state capital stock, reduce steady state credit rationing, and raise the steady state welfare of all agents. The authors also argue that the conditions stated are likely to be satisfied in practice. ...
Working Paper
Organizations in economic analysis
Three economic environments are reviewed, and in each organizations play an essential role. For an adverse selection insurance economy, we find that when mutual insurance arrangements are permitted an equilibrium necessarily exists and is optimal. This example, and the two others, illustrate the problems that may result from imposing organizational structure on an environment rather than permitting the structure to be determined endogenously.
Working Paper
Human capital investment, and the inefficiency of compensation based on marginal productivity: the static case
A simple extension of the traditional analysis of human capital accumulation is considered in a general equilibrium context. When real wages are equated to marginal products in the presence of human capital investment, resulting equilibria are almost never efficient even by very weak criteria. This is true even though labor is not a quasi-fixed factor, and informational asymmetries are excluded from the model. It is shown that human capital investment generates externalities, and has associated with it a ?free-rider problem.? This, in turn, explains the common practice of employers requiring ...
Working Paper
On government credit programs
Credit rationing is a common feature of most developing economies. In response to it, the governments of these countries often operate extensive credit programs and lend, either directly or indirectly, to the private sector. We analyze the macroeconomic consequences of a typical government credit program in a small open economy. We show that such programs increase long-run production if the economy is in a development trap and that such programs often lead to endogenously arising aggregate volatility. On the other hand, they may eliminate certain indeterminacies created by endogenous credit ...
Working Paper
Inflation, financial markets, and capital formation