Discrimination of outcomes in a prisoner’s dilemma game

An experiment was conducted to demonstrate that previous research using the PDG has neglected to separate the effects of strategy from the types of outcomes associated with two-person two-choice games, i.e.; whether it be a two-outcome, three-outcome, or standard four-outcome game. The types of outcomes and the contingent strategies of a “dummy” were manipulated. Two strategies were used in the standard PDG four-outcome game, four strategies...