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.

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.

This paper considers an incumbent firm that is faced with a potential entrant in a vertically differentiated market. It demonstrates than an incumbent firm cannot prevent entry through product proliferation because of a commitment problem.