Negotiations in the Iterated Prisoner’s Dilemma

2021 ◽  
Vol 6 (2) ◽  
Author(s):  
Ethan Akin
Keyword(s):  
Prisoner's Dilemma ◽  
Prisoner’S Dilemma ◽  
Iterated Prisoner's Dilemma ◽  
Iterated Prisoner’S Dilemma

William Press and Freeman Dyson’s 2012 results were new and unexpected, and still excite considerable response. Ethan Akin presents another approach to winning the iterated prisoner’s dilemma.

When Do Psychopathic Traits Affect Cooperative Behavior?: An Iterated Prisoner's Dilemma Experimental Study

2020 ◽  
Author(s):  
M Testori ◽  
M Kempf ◽  
RB Hoyle ◽  
Hedwig Eisenbarth
Keyword(s):  
Prisoner's Dilemma ◽  
Cooperative Behavior ◽  
Prisoner’S Dilemma ◽  
Selection Procedure ◽  
Psychopathic Traits ◽  
Strong Impact ◽  
Iterated Prisoner's Dilemma ◽  
Human Decision ◽  
The Impact ◽  
Iterated Prisoner’S Dilemma

© 2019 Hogrefe Publishing. Personality traits have been long recognized to have a strong impact on human decision-making. In this study, a sample of 314 participants took part in an online game to investigate the impact of psychopathic traits on cooperative behavior in an iterated Prisoner's dilemma game. We found that disinhibition decreased the maintenance of cooperation in successive plays, but had no effect on moving toward cooperation after a previous defection or on the overall level of cooperation over rounds. Furthermore, our results underline the crucial importance of a good model selection procedure, showing how a poor choice of statistical model can provide misleading results.

scholarly journals Does imperfect information always disturb the evolution of reciprocity?

2016 ◽  
Vol 7 (1) ◽  
pp. 14-16 ◽  
Author(s):  
Shun Kurokawa
Keyword(s):  
Imperfect Information ◽  
Prisoner's Dilemma ◽  
Prisoner’S Dilemma ◽  
Perfect Information ◽  
Prisoner’S Dilemma Game ◽  
Problematic Case ◽  
Iterated Prisoner's Dilemma ◽  
Prisoner's Dilemma Game ◽  
Explanatory Mechanism ◽  
Iterated Prisoner’S Dilemma

Reciprocity has long been regarded as a potential explanatory mechanism for the maintenance of cooperation. However, a possible problematic case relevant to the theory of reciprocity evolution arises when the information about an opponent’s behavior is imperfect. Although it has been confirmed that imperfect information disturbs the evolution of reciprocity, this argument is based on the assumption that those who attempt to cooperate always succeed in doing so. In reality, mistakes can occur, and previous studies have demonstrated that this can sway the evolution of reciprocity. In this study, removing the assumption that mistakes do not occur, we examine whether imperfect information disturbs the evolution of reciprocity in the iterated prisoner’s dilemma game with errors in behavior. It might be expected that when mistakes occur, reciprocity can evolve more in the case of imperfect information than in the case of perfect information. This is because in the former case, reciprocators can miss defections incurred by other reciprocators’ mistakes owing to imperfect information, which allows cooperation to persist. Contrary to this expectation, however, our analysis reveals that imperfect information still disturbs the evolution of reciprocity when mistakes occur. Additionally, we have determined that the condition under which reciprocity evolves remains unaffected, whatever reciprocators subsequently do when the opponent's last behavior was missed.

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