Search Results
Working Paper
External increasing returns, short-lived agents and long-lived waste
Actions that affect environmental quality both influence and respond to macroeconomic variables. Further, many environmental and macroeconomic consequences of current actions will have uncompensated effects that outlive the actors. This paper presents an overlapping-generations model of environmental externalities and capital accumulation: consumption of the old generates long-lived garbage as a by-product, while young agents invest in both capital and destruction of the existing garbage stock. The model also assumes external increasing returns: increases in the capital stock increase the ...
Working Paper
Money, banking, and capital formation
We consider a monetary growth model in which banks arise to provide liquidity. In addition, there is a government that issues not only money, but interest-bearing bonds; these bonds compete with capital in private portfolios. When the government fixes a constant growth rate for the money stock, we show that there can exist multiple nontrivial monetary steady states. One of these steady states is a saddle, while the other can be a sink. Paths approaching these steady states can display damped endogenous fluctuations, and development trap phenomena are common. Across different steady states, ...
Conference Paper
How and why do consumers choose their payment methods?
This overview will summarize the existing literature on consumer payment behavior: what we know and don?t know, what we need to know, and the implications for public policy.
Conference Paper
Financial fragility with rational and irrational exuberance
Working Paper
Welfare-improving credit controls
Credit controls are generally believed to result in an inefficient allocation of resources. This paper presents a counterexample. It displays a general equilibrium, multi-good model with spatial separation for which steady state equilibria exist in which both cash (i.e. fiat currency) and trade credit are used in exchange. Transaction costs, restrictions on the timing of trade, and a positive nominal interest rate cause the laissez-faire equilibrium to be non-optimal. A quantitative restriction on the use of trade credit can yield a Pareto superior allocation.
Working Paper
The effects of open market operations in a model of intermediation and growth
This article presents a monetary growth model in which spatial separation and limited communication create a role for banks. Monetary policy interacts with the financial system's liquidity provision to affect the existence, multiplicity, and dynamical properties of equilibria. Moderate levels of risk aversion and tight monetary policy can lead to multiple steady rates. Dynamical equilibria can be indeterminate, with oscillatory paths. Thus financial market frictions are a source of indeterminacies and endogenous volatility. Under plausible conditions, tight monetary policy raises the nominal ...
Journal Article
Credit controls: 1980
Experience suggests that in times of rising inflation and interest rates, political support emerges for the use of credit controls. In the U.S., such controls were last used in 1980. This article examines the 1980 controls and argues that the program had unintended and unforeseen effects that contributed to the severity of the 1980 recession.
Working Paper
A model of financial fragility
This paper presents a dynamic, stochastic game-theoretic model of financial fragility. The model has two essential features. First, interrelated portfolios and payment commitments forge financial linkages among agents. Second, iid shocks to investment projects? operations at a single date cause some projects to fail. Investors who experience losses from project failures reallocate their portfolios, thereby breaking some linkages. In the Pareto-efficient symmetric equilibrium studied, two related types of financial crises can occur in response. One occurs gradually as defaults spread, causing ...
Working Paper
Money, trade credit and asset prices
We describe a stochastic economic environment in which the mix of money and trade credit used as means of payment is endogenous. The economy has an infinite horizon, spatial separation and a credit-related transaction cost, but no capital. We find that the equilibrium prices of arbitrary contingent claims to future currency differ from those from one-good cash-in-advance models. This anomaly is directly related to the endogeneity of the mix of media of exchange used. In particular, nominal interest rates affect the risk-free real rate of return. The model also has implications for some ...