Deliberation, Single-Peakedness, and Coherent Aggregation

Deliberation, Single-Peakedness, and Coherent Aggregation
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深思熟虑、单峰性和相干聚合

DOI:
10.1017/s0003055420001045
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发表时间:
2021
影响因子:
6.8
通讯作者:
O. Roy
O. Roy
中科院分区:
法学1区
文献类型:
--
作者:
Rafiee Rad;O. Roy

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理性的审议有助于避免循环或不可传递的群体偏好,通过培养元协议,这反过来又确保了单峰轮廓。这是公认的观点,但本文认为应该加以限制。一方面,我们提供了来自计算机模拟的证据,证明理性的审议倾向于增加接近所谓的单一平台偏好。正如我们所认为的,这个证据在某种程度上是重要的,理性的审议促进了元协议的创建,反过来,单峰曲线不会延续到单一平台,后者而不是前者使得当参与者被允许表达选项之间的差异时,连贯的聚合成为可能。然而,另一方面,我们的计算结果表明,与公认的观点相反,当参与者强烈倾向于自己的观点时,理性的审议往往会产生非理性的群体偏好,而不是消除它们。这些结果是独立的参与者是否达成元协议的过程中,因此,他们强调的重要性,理性的偏好变化和偏见对自己的意见,理解理性审议的影响。
Rational deliberation helps to avoid cyclic or intransitive group preferences by fostering meta-agreements, which in turn ensures single-peaked profiles. This is the received view, but this paper argues that it should be qualified. On one hand we provide evidence from computational simulations that rational deliberation tends to increase proximity to so-called single-plateaued preferences. This evidence is important to the extent that, as we argue, the idea that rational deliberation fosters the creation of meta-agreement and, in turn, single-peaked profiles does not carry over to single-plateaued ones, and the latter but not the former makes coherent aggregation possible when the participants are allowed to express indifference between options. On the other hand, however, our computational results show, against the received view, that when the participants are strongly biased towards their own opinions, rational deliberation tends to create irrational group preferences, instead of eliminating them. These results are independent of whether the participants reach meta-agreements in the process, and as such they highlight the importance of rational preference change and biases towards one’s own opinion in understanding the effects of rational deliberation.
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