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arXiv 1209.5518physics.soc-phcond-mat.dis-nncs.SI
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多样性引起的对社会规范反应的共鸣

Diversity-induced resonance in the response to social norms

Claudio J. Tessone, Angel Sánchez, Frank Schweitzer

摘要:

在本文中,我们专注于多样性诱导共振,这是最近发现的可激发的和其他物理系统。我们研究这种现象的出现,在一个纯粹的经济模型的合作和叛逃代理。代理人对公共利益的贡献被视为一种社会规范。因此,叛逃的代理人面临着社会压力,如果搭便车变得普遍,这种压力就会减少。在这个模型中,由于对社会规范的不同敏感性,代理人之间的多样性自然出现。我们研究的演化合作作为一个响应社会规范(一)的复制动力学,和(二)通过数值模拟的logit动力学。多样性引起的共振被观察到作为一个最大的代理人的反应,在社会规范的变化作为一个功能的异质性程度的人口。我们提供了一个分析,平均场方法的logit动态,并找到非常好的协议与模拟。从社会经济的角度来看,我们的研究结果表明,与直觉相反,个人对社会规范的敏感性的多样性可能会导致社会更好地遵循这些规范作为一个整体,即使部分人口不太倾向于遵循它们。

英文摘要:

In this paper we focus on diversity-induced resonance, which was recently found in bistable, excitable and other physical systems. We study the appearance of this phenomenon in a purely economic model of cooperating and defecting agents. Agent's contribution to a public good is seen as a social norm. So defecting agents face a social pressure, which decreases if free-riding becomes widespread. In this model, diversity among agents naturally appears because of the different sensitivity towards the social norm. We study the evolution of cooperation as a response to the social norm (i) for the replicator dynamics, and (ii) for the logit dynamics by means of numerical simulations. Diversity-induced resonance is observed as a maximum in the response of agents to changes in the social norm as a function of the degree of heterogeneity in the population. We provide an analytical, mean-field approach for the logit dynamics and find very good agreement with the simulations. From a socio-economic perspective, our results show that, counter-intuitively, diversity in the individual sensitivity to social norms may result in a society that better follows such norms as a whole, even if part of the population is less prone to follow them.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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