This paper presents a result of a voluntary contribution mechanism experiment with partial communication. We found that the trend of mean investments depended on whether a communication network was connected or not and on how fast all subjects could share information.

In this paper, we analyze a variety of data on saving motives, bequest motives, and bequest division from the "Comparative Survey of Savings in Japan and the United States", a binational survey conducted in 1996 by the Institute for Posts and Telecommunications Policy of the Ministry of Posts...