Implementation and Mind Control

Abstract

This paper incorporates social psychology into implementation theory, where an uninformed principal manipulates a dynamic decision-making process without employing any tailored contractual device.We demonstrate the principal's mind-control method through which he can effectively utilize social psychology tactics to incentivize informed agents to announce their information in keeping with his wishes. We show that with incentive compatibility, the principal can implement any alternative that he wishes as the unique Nash equilibrium outcome, even if the psychological cost of each agent from disobeying the principal's wishes is small as compared to his total material benefits.