Rational Groupthink

Rational Groupthink
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理性群体思维

DOI:
10.2139/ssrn.2541707
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发表时间:
2014
期刊:
The Wharton School
影响因子:
--
通讯作者:
O. Tamuz
O. Tamuz
中科院分区:
--
文献类型:
--
作者:
Matan Harel;Elchanan Mossel;P. Strack;O. Tamuz

文献摘要

被引文献

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我们研究了长寿的理性代理如何从反复观察私人信号和彼此的行为中学习。在正常信号下,任何规模的群体都比四个在每个时期直接观察彼此私人信号的代理人学习得更慢。类似的结果适用于一般的信号结构。我们确定理性的群体思维,其中代理人忽略他们的私人信号,并选择相同的行动很长一段时间的原因,这种失败的信息汇总。
We study how long-lived rational agents learn from repeatedly observing a private signal and each others’ actions. With normal signals, a group of any size learns more slowly than just four agents who directly observe each others’ private signals in each period. Similar results apply to general signal structures. We identify rational groupthink—in which agents ignore their private signals and choose the same action for long periods of time—as the cause of this failure of information aggregation.