# prisoner's dilemma

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## Prisoner's Dilemma

A classic problem in game theory. In the problem, two suspects are arrested and questioned separately by police. If one accuses the other while the other remains silent, the accuser will go free and the silent party will go to jail for 10 years. If each accuses the other, both go to prison for five years. If both remain silent, they only go to jail for one year. According to the dilemma, the rational response for each of the prisoners is to accuse the other (maximizing the possibility each will go free), even though this produces an irrational result (that both go to jail for five years).

The prisoner's dilemma is used to explain a variety of economic and political phenomena when all parties involved are self-interested, rational and have imperfect information. For example, two companies may compete for a promising employee. They offer increasingly attractive salaries. If one company gives up, the other company will take the employee. So both quite rationally increase the offers. This however could produce the irrational result that a new employee is paid too highly. The prisoner's dilemma seeks to explain why rational actions sometimes lead to irrational conclusions.

## prisoner's dilemma

see GAME THEORY.
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References in periodicals archive ?
This counterintuitive possibility can be illustrated by a simple game-theoretic model--the oft-invoked prisoners' dilemma.
2]) in round r of the repeated weak extended prisoners' dilemma (EPD) game is compatible with a subgame perfect equilibrium if and only if r [greater than or equal to] 3, or r = 2 and ([a.
Thus, the findings of previous studies using prisoners' dilemma game are general to our setup; the individual contingencies embedded in the game itself do not reliably produce either XXXX or YYYY.
The N-player Prisoners' Dilemma game can be defined by the following three properties:
Volumes have been written about the prisoners' dilemma because it focuses on what is lost when participants cannot communicate.
Robert Jervis's article "Cooperation under the Security Dilemma" is the best known theoretical example of the prisoners' dilemma used during the height of the Cold War to examine US-Soviet relations in light of strategic nuclear weapons.
The prisoners' dilemma is a ubiquitous problem that can be effectively addressed by good leaders, but which is a major obstacle to achieving good leadership.
Since it is a negative sum game, however, the only thing we get out of game theory is that conflict will characteristically be a prisoners' dilemma, with both parties having a dominant strategy which is socially non-optimal.
Senator Kerry is also capable of saying this, but not without cheapening it or qualifying it, so that, in the Nation prisoners' dilemma, he is offering you the worst of both worlds.
This leads to consideration of Professor Macey's suggestion that the classic prisoners' dilemma may offer an effective analytical basis for disclosure policy.
Two forms of 2 x 2 games, Prisoners' Dilemma and Chicken, are applied to international crises involving the United States and the Soviet Union.
But what about the basic idea from game theory that we can improve efficiency if we overcome the prisoners' dilemma in a cooperative approach?

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