Decisions from experience: How groups and individuals adapt to change
Decisions from experience: How groups and individuals adapt to change
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经验决策：群体和个人如何适应变化
DOI：
10.3758/s13421-014-0445-7
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发表时间：
2014
影响因子：
2.4
通讯作者：
Cleotilde González
中科院分区：
文献类型：
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作者：
Tomás Lejarraga;José Lejarraga;Cleotilde González
群体是否比个体做出更好的判断和决策已经被广泛研究，但大多数研究都集中在静态任务上。在决策环境发生意外变化且没有通知的情况下，群体和个人如何进行比较？这篇文章从经验中考察了决策中的群体和个人行为，其中潜在的概率在一些试验后发生了变化。与之前的文献一致，结果表明，在决策任务稳定的情况下，群体的表现优于平均个人。然而，在决策环境发生变化后，小组的表现不再是上级的。组的表现更接近贝叶斯更新的基准，它假设完美的记忆。研究结果表明，群体没有采取决策程序，可能会延迟他们的适应环境的变化。相反，他们似乎已经协调了他们的反应，这导致他们表现得好像他们有更好的记忆力，随后延迟适应。
Whether groups make better judgments and decisions than individuals has been studied extensively, but most of this research has focused on static tasks. How do groups and individuals compare in settings where the decision environment changes unexpectedly and without notification? This article examines group and individual behavior in decisions from experience where the underlying probabilities change after some trials. Consistent with the previous literature, the results showed that groups performed better than the average individual while the decision task was stable. However, group performance was no longer superior after a change in the decision environment. Group performance was closer to the benchmark of Bayesian updating, which assumed perfect memory. Findings suggest that groups did not adopt decision routines that might have delayed their adaption to change in the environment. Rather, they seem to have coordinated their responses, which led them to behave as if they had better memory and subsequently delayed adaptation.
DOI：
--
发表时间：
1977
期刊：
--
影响因子：
--
作者：
W. Schneider;R. Shiffrin
通讯作者：
W. Schneider;R. Shiffrin