Existence of Equilibria in Matching Models of Money: A New Technique

This paper develops a new technique for proving the existence and indeterminacy of monetary equilibria in money search models with divisible money. Our technique is substantially simpler than standard constructive proofs in the literature. This paper is based on the second half of Kamiya and Shimizu (2002). We are very grateful to the associate editor and an anonymous referee of this journal for their very detailed suggestions and comments. This research is financially supported by Grant-in-Aid for Scientific Research from JSPS and MEXT. The second author also acknowledges the financial support by Zengin Foundation for studies on Economics and Finance.     

ON THE ROLE OF TAX SUBSIDY SCHEME IN MONEY SEARCH MODELS*

This article investigates the roles of policy in search models with divisible money. Recently, real indeterminacy of stationary equilibria has been found in both specific and general search models with divisible money. Thus if we assume the divisibility of money, it would be quite difficult to make accurate predictions of the effects of simple monetary policies. Therefore, in this article, we introduce a certain tax subsidy scheme and show that this is effective in selecting a determinate efficient equilibrium. In other words, for a given efficient equilibrium and for any real number δ > 0 , a certain tax subsidy scheme induces a locally determinate equilibrium within the δ‐neighborhood of the given equilibrium. Moreover, the size of the tax subsidy can be arbitrarily small.     

The Substitution Effect of Mobile Games on Console Games: An Empirical Analysis of the Japanese Video Game Industry

In this paper, we discuss the substitution effects between mobile games and console games. We estimate such effects by a fixed-effect regression with instrumental variables using panel data of about 100,000 observations. The results showed that the substitution effects of playing smart devices on 3DS, Wii, and PSP were recognizable, but did not have significant effects on PS3, and the substitution effects on PSP were very small. Therefore, mobile games had a substitution effect on casual console games, or on console games in which the play situation resembled mobile games. In addition, the substitution effects were at most about 0.1. The substitution effects were small. Our results indicate that mobile games represent the pioneers in the new market of gaming at least during our observation period. But new games and traditional games will coexist for a while.     

A Theory of the Demand for Underwriting

We examine the demand for underwriting and its effect on equilibrium in an insurance market in which insureds know their risk type, but insurers do not. Our analysis indicates that a set of policies including one that requires buyers to take an underwriting test can constitute a full coverage Nash equilibrium when perfect classification is possible. We also find that underwriting equilibria, in which low risks obtain greater coverage than they would without underwriting, widely exist in a Wilsonian market with nonmyopic insurers. Our findings provide a potential explanation for why empirical evidence on adverse selection is mixed.     

Nonlinear Pricing in General Equilibrium Models with Joint Production

This paper considers general equilibrium models of public utilities which produce either public goods or private goods. In the models, cases of increasing returns are not a priori excluded. The products of the public utilities and their costs are allocated to the consumers according to a rule that is dependent on information communicated to the public utilities. We show that if the public utilities follow a nonlinear pricing rule, the equilibrium allocations are always Pareto-optimal. Moreover, the message space is of finite dimensions.
JEL Classification Numbers: D51, D60, H41, H42.     

PACIFIC RIM TRADE AND DEVELOPMENT: HISTORICAL ENVIRONMENT AND FUTURE PROSPECTS

Pacific Asia is deep rooted in its cultural heritage and historical background, which have set the tone for regions success. These same factors also have created rather different trading practices, compared with those of the West — practices that are less transparent and full of hidden private trade barriers.
Interdependence within the region suggests integration, but Pacific Asia has taken a course of non-exclusive cooperation rather than following the exclusive course of the European Community (EC) and of the North American Free Trade Agreement (NAFTA). The latter two trade blocs threaten the continued success and development of Pacific Asia. Although the Uruguay Round of the General Agreement on Tariffs and Trade (GATT) sends relief, fostering a cooperative rather than a retaliative Asian Pacific Economic Cooperation (APEC) organization offers the most promise.