This article studies how the presence of an antitrust authority affects market-sharing agreements made by firms. These agreements prevent firms from entering each other's market. The set of these agreements defines a collusive network, which is pursued by antitrust authorities. This article...

A decision-maker has to elicit information from informed multiple experts about a policy's value. The principal may prevent communication among the agents. However, it may be in the principal's interest to allow communication among them. I assume that communication allows synergies to emerge...

A decision-maker has to elicit information from multiple informed experts about a policy's value. The principal may prevent communication among agents. However, it may be in the principal's interest to allow communication among them. I assume that communication allows some synergies among...