title: Difference of reciprocity effect in two coevolutionary models of presumed two-player and multiplayer games.
abstract: Unlike other natural network systems, assortativity can be observed in most human social networks; however, it has been reported that a social dilemma situation represented by a 2×2 prisoner's dilemma game favors dissortativity to enhance cooperation. Our simulations successfully reveal that a public goods game with coevolution for both agents' strategy and network topology encourages assortativity, although it only slightly enhances cooperation as compared to a 2×2 donor and recipient game with a strong dilemma to be solved. This outcome occurs because the network dynamics in a multiplayer game discourages emerging cooperation unlike its beneficial result in a 2×2 prisoner's dilemma game.
authors.affiliation: Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Kasuga-koen, Kasuga-shi, Fukuoka 816-8580, Japan. tanimoto@cm.kyushu-u.ac.jp
authors.forename: Jun
authors.initials: J
authors.lastname: Tanimoto
mesh_terms: D000465:Algorithms; D003299:Cooperative Behavior; D003657:Decision Making; D003661:Decision Support Techniques; D005716:Game Theory; D006801:Humans; D008962:Models, Theoretical; D012944:Social Support