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arXiv 1606.01401q-bio.PEphysics.soc-ph
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行为多样性的进化后果

Evolutionary consequences of behavioral diversity

Alexander J. Stewart, Todd L. Parsons, Joshua B. Plotkin

摘要:

迭代游戏提供了一个框架来描述个体群体之间的社会互动。最近的工作刺激的发现“零决定因素”的策略,迅速扩大了我们的能力,分析这种相互作用。这部分的工作主要集中在游戏中,玩家面临一个简单的二元选择,“合作”或“背叛”。然而,真实的个体往往表现出行为的多样性,他们对社会互动的投入在质和量上都是不同的。在这里,我们探讨如何获得更大的行为选择多样性的影响有限的人口的社会动态的演变。我们表明,在公共产品游戏中,一些两个选择的策略仍然可以抵御入侵的所有可能的多选择入侵者,即使在相对较少的惩罚。我们还表明,获得更大的行为选择的结果在更“崎岖“的适应度景观,与人口能够稳定的合作,在多个层次的投资,这样的选择促进合作时,投资回报率低,但阻碍合作时,投资回报率高。最后,我们分析了迭代石头剪刀布博弈,其非传递的支付结构意味着单边控制是困难的,零决定策略一般不存在。尽管如此,我们发现,大部分的多项选择策略可以入侵和抵抗缺乏行为多样性的策略的入侵-因此,即使是混合良好的人群也会倾向于进化行为多样性。

英文摘要:

Iterated games provide a framework to describe social interactions among groups of individuals. Recent work stimulated by the discovery of "zero-determinant" strategies has rapidly expanded our ability to analyze such interactions. This body of work has primarily focused on games in which players face a simple binary choice, to "cooperate" or "defect". Real individuals, however, often exhibit behavioral diversity, varying their input to a social interaction both qualitatively and quantitatively. Here we explore how access to a greater diversity of behavioral choices impacts the evolution of social dynamics in finite populations. We show that, in public goods games, some two-choice strategies can nonetheless resist invasion by all possible multi-choice invaders, even while engaging in relatively little punishment. We also show that access to greater behavioral choice results in more "rugged " fitness landscapes, with populations able to stabilize cooperation at multiple levels of investment, such that choice facilitates cooperation when returns on investments are low, but hinders cooperation when returns on investments are high. Finally, we analyze iterated rock-paper-scissors games, whose non-transitive payoff structure means unilateral control is difficult and zero-determinant strategies do not exist in general. Despite this, we find that a large portion of multi-choice strategies can invade and resist invasion by strategies that lack behavioral diversity -- so that even well-mixed populations will tend to evolve behavioral diversity.

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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