We study a principal-agent model in which the principal has a production technology. The efficiency parameter of the principal's technology is not known to the agent. Alternatively, the principal can make the agent use a technology from a different channel. By gathering information at a cost,...

We study a principal-agent relationship with auditing in which information from an audit is “soft” – by conducting an audit, the principal observes the agent’s private information, but cannot obtain a verifiable evidence on the information. Moreover, the principal’s auditing effort is...

We study a monopsonist-supplier model in which each party has its own technology for production. The supplier may use its own or be required to adopt the buyer's technology. Because the efficiency of each technology is unknown to the other party, the choice of technology determines the informed...

We study contracting between a public good provider and users with private valuations of the good. We show that, once the provider extracts the users' private information, she benefits from manipulating the collective information received from all users when communicating with them. We derive...