2011 Fiscal Year Final Research Report

Strategy for cooperation and free-riding in a dynamic contribution game

Research Project

Project/Area Number	20530156
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Single-year Grants
Section	一般
Research Field	Economic theory
Research Institution	Kobe University
Principal Investigator	MIYAGAWA Eiichi 神戸大学, 大学院・経済学研究科, 教授 (10467673)
Project Period (FY)	2008 – 2011
Keywords	ゲーム理論 / 公共財
Research Abstract	This project studied a game where two individuals alternate in making contributions to a public good until their total cumulative contributions reach a required level. Unlike existing studies, we considered the case where individuals do not have complete information about the total amount the other individual is willing to pay for the public good. We succeeded in finding a game-theoretic equilibrium. When the required level of contributions is relatively small, we proved that no other equilibrium exists. We found that, in the equilibrium, the public good is completed only gradually. Completion may take a very long time even when the required level of contributions is small.

(6 results)