演講題目： Screening with Evolving Preference
I study how private information on the evolution of preference interacts with the classical screening contract in a principal-agent framework with short-term commitment. Private information on the evolution of preference is redundant but non-negligible. It preserves the agent's future information advantage, which restores the future rent-efficiency tradeoff and relaxes the current incentive compatibility in comparison to the benchmark case with commonly known evolution of preference. This results in a distortion of future efficiency and, under some conditions, an improvement of current efficiency. It also improves current information revelation when mixed revelation strategy is considered. The agent's naiveté affects to what extent the restored future rent-efficiency tradeoff relaxes the current incentive compatibility. For some specific form of naiveté, the principal is better off than under the traditional second-best contract.