オオバヤシ　シンヤ   OBAYASHI Shinya   大林　真也    所属   青山学院大学  社会情報学部 社会情報学科    職種   准教授
言語種別	日本語
発行・発表の年月	2013
形態種別	学術雑誌
査読	査読あり
標題	流動的集団における助け合いのメカニズム
執筆形態	単独
掲載誌名	社会学評論
掲載区分	国内
出版社・発行元	日本社会学会
巻・号・頁	64(2),240-256頁
著者・共著者	大林 真也
概要	The purpose of this study is to analyze how altruistic behavior can be maintained in a group with flexible membership. In this paper, altruistic behaviors are limited to individual-focused net generalized exchange, in which members provide resources to benefit one member at a time. In preceding works, it was shown that this exchange can be maintained in a fixed and long-term relationship at the group and community levels, where reputations are widely known and punishments are easily conducted. However, it can also be maintained in a group with flexible membership. The mechanism of this puzzling phenomenon can be clarified by field survey and mathematical modeling.<br>The analysis focuses on joint labor disputes in community unions. The game theoretic model shows that the conditional altruistic strategy can be a subgame perfect Nash equilibrium, even when none of the previous requirements are satisfied.
DOI	10.4057/jsr.64.240
ISSN	00215414
NAID	130004696975