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The effect of sanctions on the evolution of cooperation in linear division of labor

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タイトル: The effect of sanctions on the evolution of cooperation in linear division of labor
著者: Nakamaru, Mayuko 著作を一覧する
Shimura, Hayato 著作を一覧する
Kitakaji, Yoko 著作を一覧する
Ohnuma, Susumu 著作を一覧する
キーワード: Illegal dumping
Social dilemma
Common-pool resource management
Monitoring
Replicator equation for asymmetric games
発行日: 2018年 1月21日
出版者: Elsevier
誌名: Journal of theoretical biology
巻: 437
開始ページ: 79
終了ページ: 91
出版社 DOI: 10.1016/j.jtbi.2017.10.007
PMID: 29054813
抄録: The evolution of cooperation is an unsolved research topic and has been investigated from the viewpoint of not only biology and other natural sciences but also social sciences. Much extant research has focused on the evolution of cooperation among peers. While, different players belonging to different organizations play different social roles, and players playing different social roles cooperate together to achieve their goals. We focus on the evolution of cooperation in linear division of labor that is defined as follows: a player in the i-th role interacts with a player in the i + 1-th role, and a player in the n-th role achieves their goal (1 <= i < n) if there are n roles in the division of labor. We take the industrial waste treatment process as an example for illustration. We consider three organizational roles and B-i is the i-th role. The player of B; can choose two strategies: legal treatment or illegal dumping, which can be interpreted as cooperation or defection (i = 1-3). With legally required treatment, the player of B-j pays a cost to ask the player of Bj+1 to treat the waste (j = 1, 2). Then, the cooperator of Bj+1 pays a cost to treat the waste properly. With illegal dumping, the player of Bi dumps the waste and does not pay any cost (i= 1-3). However, the waste dumped by the defector has negative environmental consequences, which all players in all roles suffer from. This situation is equivalent to a social dilemma encountered in common-pool resource management contexts. The administrative organ in Japan introduces two sanction systems to address the illegal dumping problem: the actor responsibility system and the producer responsibility system. In the actor responsibility system, if players in any role who choose defection are monitored and discovered, they are penalized via a fine. However, it is difficult to monitor and detect the violators, and this system does not work well. While, in the producer responsibility system, the player in B-1 is fined if the player cannot hand the manifest to the local administrative organ because the players of B-i (i=1-3) who choose defection do not hand the manifest to the player of B-1. We analyze this situation using the replicator equation. We reveal that (1) the three-role model has more empirical credibility than the two-role model including B-1 and B-3, and (2) the producer responsibility system promotes the evolution of cooperation more than the system without sanctioning. (3) the actor responsibility system does not promote the evolution of cooperation if monitoring and detecting defectors is unsuccessful. (C) 2017 Elsevier Ltd. All rights reserved.
Rights: © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Relation (URI): https://doi.org/10.1016/j.jtbi.2017.10.007
資料タイプ: article (author version)
URI: http://hdl.handle.net/2115/72350
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 大沼 進

 

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