Melvin Dresher was a mathematician, notable for developing, with Merrill Flood, the game theoretical model of cooperation and conflict known as the Prisoner's dilemma while at RAND in 1950. He obtained his Ph.D. at Yale University in 1937, the title of his dissertation was "Multi-Groups. a Generalisation of the Notion of Group. Game theory is a hybrid branch of applied mathematics and economics that studies strategic situations where players choose different actions in an attempt to maximize their returns. ... Will the two prisoners cooperate to minimize total loss of liberty or will one of them, trusting the other to cooperate, betray him so as to go free? In game theory, the prisoners dilemma is a type of non-zero-sum game in which two players can cooperate with... RAND Headquarters The RAND Corporation is a global policy think tank first formed to offer research and analysis to the United States armed forces. ... Yale redirects here. ...