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prisoner's Dilemma

The best-known example from game theory, which illustrates how people behave in strategic situations. The Prisoner's Dilemma is based on some version of the following situation: two men ...

prisoner's dilemma

prisoner's dilemma ((in game theory))   Quick reference

The Concise Oxford Dictionary of Mathematics (5 ed.)

Reference type:
Subject Reference
Current Version:
2014

...'s dilemma (in game theory) Any generalized situation which is essentially similar to the following: two prisoners are interviewed separately about a crime. If both deny the charge there is no evidence to convict them and both will be released. If one confessed and implicates the other, who denies it, then the first will be released and the other will be heavily punished. If both confess then both receive a lesser punishment than the prisoner in the case where one denied it and the other confessed. The ‘dilemma’ for the prisoner is that denying the...

Prisoner's Dilemma

Prisoner's Dilemma   Quick reference

A Dictionary of Sociology (4 ed.)

Reference type:
Subject Reference
Current Version:
2015
Subject:
Social sciences, Sociology
Length:
257 words

...'s Dilemma A paradigmatic instance in game theory , taking its name from a story of two prisoners, who are interrogated separately and cannot communicate with each other. There is insufficient evidence for the police to convict either prisoner of armed robbery, so that unless they confess, each will receive a relatively light sentence of one year's imprisonment for illegal possession of firearms. The prosecuting authorities offer each prisoner a deal, whereby they may confess and turn state's witness against the other prisoner (putting him away for ten...

Prisoner's Dilemma

Prisoner's Dilemma   Reference library

Dictionary of the Social Sciences

Reference type:
Subject Reference
Current Version:
2002
Subject:
Social sciences
Length:
560 words

...'s Dilemma The best-known example from game theory , which illustrates how people behave in strategic situations. The Prisoner's Dilemma is based on some version of the following situation: two men have been arrested and are suspected of burglary. The police do not have evidence to convict them unless one or the other confesses to the crime; however, they do have enough evidence to convict them of a minor felony if neither confesses. This conviction carries a sentence of a year in prison. The two prisoners are not permitted to communicate and each is...

prisoner's dilemma

prisoner's dilemma   Reference library

The Oxford Companion to Philosophy (2 ed.)

Reference type:
Subject Reference
Current Version:
2005
Subject:
Philosophy
Length:
241 words

...'s dilemma . The prisoner's dilemma describes a possible situation in which prisoners are offered various deals and prospects of punishment. The options and outcomes are so constructed that it is rational for each person, when deciding in isolation, to pursue a course which each finds to be against his interest and therefore irrational. For example, if I am an employer and you a worker, it may be to my advantage not to pay you (rather than pay you) whether or not you do the work, and for you not to do the work (rather than do it) whether or not I pay you;...

Prisoner's Dilemma Games

Prisoner's Dilemma Games   Reference library

Encyclopedia of Evolution

Reference type:
Subject Reference
Current Version:
2005
Subject:
Science and technology, Life Sciences, Social sciences, Anthropology
Length:
2,229 words
Illustration(s):
1

...the Prisoner's Dilemma in spatially segregated populations. Poundstone, W. Prisoner's Dilemma: Jon Von Neumann, Game Theory and the Puzzle of the Bomb . New York, 1992. An entertaining and historic overview of the use of the Prisoner's Dilemma game in many disciplines. Ridley, M. The Origins of Virtue . New York, 1996. A fine trade book on evolution and social behavior, with numerous sections devoted to the Prisoner's Dilemma. Sigmund, K. Games of Life . Oxford, 1993. A short book on the uses of game theory, with emphasis on the Prisoner's Dilemma....

Prisoner's Dilemma game

Prisoner's Dilemma game n.   Quick reference

A Dictionary of Psychology (4 ed.)

Reference type:
Subject Reference
Current Version:
2015

...than if they both choose D . The game was discovered in 1950 by the US mathematician Merrill M(eeks) Flood ( 1908–91 ) and the Polish-born US mathematician Melvin Dresher ( 1911–92 ). See also mixed-motive game , Newcomb's problem , N - person Prisoner's Dilemma , social dilemma , sure-thing principle , tit for tat strategy . PD or PDG abbrev...

N-person Prisoner’s Dilemma

N-person Prisoner’s Dilemma n.   Quick reference

A Dictionary of Psychology (4 ed.)

Reference type:
Subject Reference
Current Version:
2015

...-person Prisoner’s Dilemma n . The first and most fundamental type of multi-person social dilemma , a generalization of the Prisoner’s Dilemma game to include more than two players, discovered simultaneously and independently in 1973 by the US psychologist Robyn Mason Dawes ( 1936–2010 ), the US mathematician Henry J. Hamburger (born 1940 ), and the US economist Thomas C. Schelling ( 1921–2016 ). It is an interactive decision involving three or more players who each face a choice between a cooperative strategy ( 2 ) labelled C and a...

prisoner's dilemma

prisoner's dilemma noun   Quick reference

New Oxford American Dictionary (3 ed.)

Reference type:
English Dictionary
Current Version:
2015
Subject:
English Dictionaries and Thesauri
Length:
74 words
prisoner's dilemma

prisoner's dilemma noun   Quick reference

Oxford Dictionary of English (3 ed.)

Reference type:
English Dictionary
Current Version:
2015
Subject:
English Dictionaries and Thesauri
Length:
74 words
prisoner's dilemma

prisoner's dilemma noun   Reference library

The Canadian Oxford Dictionary (2 ed.)

Reference type:
English Dictionary
Current Version:
2005
Subject:
English Dictionaries and Thesauri
Length:
40 words
prisoner's Dilemma

prisoner's Dilemma  

Reference type:
Overview Page
The best-known example from game theory, which illustrates how people behave in strategic situations. The Prisoner's Dilemma is based on some version of the following situation: two men have been ...
Prisoners’ Dilemma

Prisoners’ Dilemma   Quick reference

A Concise Oxford Dictionary of Politics and International Relations (4 ed.)

Reference type:
Subject Reference
Current Version:
2018
Subject:
Social sciences, Politics
Length:
487 words

...at an ‘evolutionarily stable’ pattern of conditional cooperation. PrisonersDilemma models have been applied to almost every form of human and animal interaction. Well‐known examples from politics include arms races , incomes policy, trade bargaining, and pollution reduction. There are dangers of overuse: the situation needs to be specified carefully, and what appears to be a prisonersdilemma may not always be so. There have also been extensive experimental tests of PrisonersDilemma in the laboratory. One of the best‐established results is that...

prisoners’ dilemma

prisoners’ dilemma   Quick reference

The Oxford Dictionary of Philosophy (3 ed.)

Reference type:
Subject Reference
Current Version:
2016
Subject:
Philosophy
Length:
440 words
Illustration(s):
1

...in play, and cannot be said to be the single best strategy for all circumstances. See also assurance game ; chicken ; commons, tragedy of . http://www.univie.ac.at/virtuallabs/Introduction/pd.html An online tutorial on the prisonersdilemma http://www.gametheory.net/applets/prisoners.html Simulations of the prisoners’ ...

prisoners’ dilemma

prisoners’ dilemma   Quick reference

A Dictionary of Economics (5 ed.)

Reference type:
Subject Reference
Current Version:
2017
Subject:
Social sciences, Economics
Length:
171 words
Illustration(s):
1

...prisonersdilemma A two-player game that illustrates the conflict between private and social incentives, and the gains that can be obtained from making binding commitments. The name originated from a situation of two prisoners who must each choose between the strategies ‘Confess’ and ‘Don’t confess’ without knowing what the other will choose. The important feature of the game is that a lighter penalty follows for a prisoner who confesses when the other does not. The game is summarized in the pay-off matrix where the negative pay-offs can be interpreted as...

N-person Prisoner's Dilemma

N-person Prisoner's Dilemma  

The first and most fundamental type of multi-person social dilemma, a generalization of the Prisoner's Dilemma game to include more than two players, discovered simultaneously and independently in ...
social dilemma

social dilemma  

An interactive decision in which individual interests are at odds with collective interests, the pursuit of individual self-interest by every decision maker leaving everyone worse off than if each ...
game

game  

1 An interactive decision modelled in game theory. Also called a strategic game or a game of strategy. See Chicken game, Dollar Auction game, Newcomb's problem, N-person Prisoner's Dilemma, ...
security dilemma

security dilemma  

Reference type:
Overview Page
A state may arm itself with purely defensive intention yet, provided its forces are judged capable of attack, those states within range will feel unable to disregard this possibility and be obliged, ...
prisoner

prisoner  

Reference type:
Overview Page
St Dismas, St Leonard, and St Roch are the patron saints of prisoners.Prisoner of Chillon the anti-Savoyard Genevan patriot François Bonivard (1493–1570), who was imprisoned for 6 years in the castle ...
supergame

supergame  

Reference type:
Overview Page
A series of repetitions of the same game between (among) the same players. Especially in Prisoners' Dilemma and chicken games, the supergame is important because it may (but need not) result in the ...

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