共有地の悲劇のシミュレ-ション実験

概要

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In response to Edney & Harper's (1978) criticism that the static game paradigm that has often been used in the study of social traps is not appropriate to study the dynamic aspect of the problem, a new experimental paradigm for studying social traps is developed, which simulates the basic characteristics of the tragedy of the commons. Since the simulation requires the constant feedback of subjects' actions to the environment, a mini-computer is used to handle the complex processing of information. Each subject seated separately in front of a computer terminal decides how many sheep he/she adds to the common grazing ground that is graphically represented on his/her terminal screen. In a pilot experiment using this experimental format, three subjects in each group (a total of 7 groups was run) were assigned different status, allowing them to add a different number of sheep in one trial. The results of this pilot experiment were used to suggest possible improvements in the format. The results also suggest that equity concerns of the underprivileded members overrides their concern for the group welfare, culminating in repeated catastrophes.
日本グループ・ダイナミックス学会の論文