When future international agreement for global environmental control is anticipated, decisions for controlling current carbon gas emissions by improving the country's abatement capabilities are strongly affected by the likelihood of and the likely outcome of such agreements. We construct a two...

We use the framework of random matching games and develop a two society model to analyze the interaction of societies with different social norms. Each agent repeatedly faces two different coordination games. A social norm of a society is a mode of behavior --strategy--which is adopted by a...

Unlike the ordinary repeated games, in the real world, people can run away after cheating. In this paper we construct a social game, in which players can repeat Prisoners' Dilemma only if both players agree to continue the partnership. We investigate how a social sanction prevents moral hazard...

We analyzed the effects of the progress and propagation of information technology on economic activity and the form of economic organizations from three different viewpoints. First, drastic reduction of information production and information processing costs produced the bursts of information,...

Ordinary repeated games do not apply to real societies where one can cheat and escape from partners. We formulate a model of endogenous relationships that a player can unilaterally end and start with a randomly-assigned new partner with no information flow. Focusing on two-person, two-action...

When future international agreement on global environmental control is anticipated, decisions for controlling current carbon gas emissions by improving the country's abatement capabilities are strongly affected by the likelihood of such agreements as well as their probable outcome. We construct...

We often see people procrastinate what should be done immediately. This propensity seems to be especially high in Japan as bad loans problem in 1990 exemplifies. Propcrastinations in collective decision making tend to occur when there are many stakeholders. They tend to waste time while trying...

This paper analyzes a model of coordination where two agents attempt to coordinate their actions through communication. One agent (Sender) is engaged in finding the true state of nature in a stochastic environment and the action that best fits the state. The other agent (Receiver) in turn tries...

We define the "Developmental State Strategy" as a strategy to industrialize the country before democratization. Types of state system, developmental stages, international environments that are complementary to this strategy are identified. This strategy is quite effective in developing stage of...

We analyze the performance of the Japanese Economy in the last 30 years. We do so by emphasizing the fact that an economy is a social system and people are concerned with social values and norms. We point out that the employment security, which became socially guaranteed during the aftermath of...