More on money as a medium of exchange

Summary We extend the analysis of Kiyotaki and Wright, who study economies where the commodities that serve as media of exchange (or, commodity money) are determined endogenously. Kiyotaki and Wright consider only steady-state, pure-strategy equilibria; here we allow dynamic and mixed-strategy equilibria. We demonstrate that symmetric, steady-state equilibria in mixed-strategies always exist, while sometimes no such equilibria exist in pure-strategies. We prove that the number of symmetric steady-state equilibria is generically finite. We also show, however, that for some parameter values there exists a continuum of dynamic equilibria. Further, some equilibria display cycles.We thank the National Science Foundation and the University of Pennsylvania Research Foundation for financial support, as well as seminar participants at Stanford University, the London School of Economics, the Econometric Society World Congress in Barcelona, and the Conference on Monetary Theory and Financial Institutions at the Federal Reserve Bank of Minneapolis for their comments or suggestions. Alberto Trejos provided research assistance. The views expressed here are those of the authors and not necessarily those of the Federal Reserve Bank of Minneapolis or the Federal Reserve System.     

Global implications of national unconventional policies: A comment

This comment discusses “Global Implications of National Unconventional Policies” by L. Dedola. P. Karadi and G. Lombardo, which was presented in Carnegie-Rocherster conference in April 2012.     

The choice of organizational form under intrafirm bargaining rules

This paper studies the choice of organizational form under incomplete contracts. We identify an organizational form with a rule of ex-post bargaining and compare four types of organization: horizontal organizations, inverted pyramidal hierarchies, pyramidal hierarchies and vertical hierarchies. We show that if the human capital investments of all members are perfectly complementary, the horizontal organization is chosen. If the investments of two players including the owner are essential, the inverted pyramidal hierarchy can occur. Pyramidal hierarchies minimize the agency cost if investments are non-firm-specific. The vertical hierarchy emerges when the owner can motivate a player who undertakes firm-specific investment by assigning him to the middle tier. We also examine who should be assigned to the middle tier in a vertical hierarchy.     

Barriers to Global Free Trade through Bilateral Agreements

This paper examines the formation of bilateral free trade agreements (FTAs) in the context of a dynamic noncooperative bargaining game with a random proposer. We show that global free trade (a grand coalition) does not necessarily occur unless transfer payments among countries are allowed. When transfer payments are possible, bilateral FTAs always achieve global free trade, but the ex‐ante and ex‐post inequalities of social welfare among countries are larger than those when all countries are independent because of the strategic bargaining behavior.     

Financial crises,bank risk exposure and government financial policy

A macroeconomic model with financial intermediation is developed in which the intermediaries (banks) can issue outside equity as well as short term debt. This makes bank risk exposure an endogenous choice. The goal is to have a model that can not only capture a crisis when banks are highly vulnerable to risk, but can also account for why banks adopt such a risky balance sheet in the first place. We use the model to assess quantitatively how perceptions of fundamental risk and of government credit policy in a crisis affect the vulnerability of the financial system ex ante. We also study the effects of macro-prudential policies designed to offset the incentives for risk-taking.     

A dynamic equilibrium model of search, production, and exchange

We study a general equilibrium model where agents search for production and trading opportunities, that generalizes the existing literature by considering a large number of differentiated commodities and agents with idiosyncratic tastes. Thus, agents must choose nontrivial exchange as well as production strategies. We consider decreasing, constant, and increasing returns to scale in the matching technology, and characterize the circumstances under which there exist multiple steady state equilibria, or multiple dynamic equilibria for given initial conditions. We also characterize the existence of dynamic equilibria that are limit cycles. Equilibria are not generally optimal, and when multiple equilibria coexist they may be ranked. We analyze comparative statics and find that certain intuitive results do not necessarily hold without restrictions on the stochastic structure.     

Hold-up and the inefficiency of job assignments

This paper examines the trade-off between job assignments and incentives for specific investments. Under an incomplete contract, employees tend to underinvest in firm-specific human capital. To defuse this hold-up problem, the employer chooses an inefficiently low promotion standard. This result provides an explanation of the Peter Principle. However, if human capital investments also have an impact on promotion, the optimal standard might be inefficiently high.     

2002 LAWRENCE R. KLEIN LECTURE LIQUIDITY AND ASSET PRICES*

We broadly define liquid assets, or monetary assets, as any asset that can be readily sold in the market and can be held by a number of people in succession before maturity. We ask in what environment is the circulation of liquid assets essential for the smooth running of the economy. By developing a canonical model of a monetary economy (i.e., where the circulation of liquid assets is essential), we are able to examine the interaction between liquidity, asset prices, and aggregate economic activity.