The approval mechanism solves the prisoner's dilemma theoretically and experimentally

摘要: Consider a situation where players in prisoner's dilemma game can approve or reject the other's choice such as cooperation defection. If both choice, outcome is one they chose, whereas if either rejects when defect, which we name approval mechanism herein (this inspired by Cold War doctrine of mutually assured destruction). Experimentally, find that rate with 90% round and averages 93.2% across 19 rounds. The questionnaire analysis also allows us to subjects' behavior consistent subgame perfect elimination weakly dominated strategies (SPEWDS) rather than Nash equilibrium (NE) (SPNE) behavior. Theoretically, this implements SPEWDS, but not NE SPNE.