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相关概念视频

Woodward–Hoffmann Selection Rules and Microscopic Reversibility01:34

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Electrocyclic reactions, cycloadditions, and sigmatropic rearrangements are concerted pericyclic reactions that proceed via a cyclic transition state. These reactions are stereospecific and regioselective. The stereochemistry of the products depends on the symmetry characteristics of the interacting orbitals and the reaction conditions. Accordingly, pericyclic reactions are classified as either symmetry-allowed or symmetry-forbidden. Woodward and Hoffmann presented the selection criteria for...
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任务切换成本的比例与任务规则之间的不相似性.

Bettina Bustos1, J Toby Mordkoff1, Eliot Hazeltine1

  • 1Cognitive Control Collaborative, University of Iowa.

Journal of experimental psychology. General
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概括
此摘要是机器生成的。

认知灵活性涉及任务切换,这会产生成本. 这项研究表明,随着任务规则之间的差异越大,任务切换成本就会增加,这支持了类似于认知地图的任务表示.

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相关实验视频

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科学领域:

  • 认知心理学 认知心理学
  • 神经科学是一个神经科学.

背景情况:

  • 认知灵活性允许自愿切换任务.
  • 任务切换涉及更新任务表示,并产生切换成本.
  • 了解任务表示是认知灵活性的关键.

研究的目的:

  • 调查任务不相似性和切换成本之间的关系.
  • 测试这样的假设:任务表示是像认知地图一样的.
  • 扩大对任务切换的理解,超越二进制效应.

主要方法:

  • 在实验设计中对任务规则之间的相似性进行参数操作.
  • 测量响应时间以评估切换成本.
  • 分析了响应时间与任务规则不相似性的缩放.

主要成果:

  • 观察到响应时间与任务规则之间的不相似性成比例增加.
  • 证明了任务规则差异和切换成本之间的参数关系.
  • 提供了任务表示的认知地图性质的证据.

结论:

  • 任务表示以类似于认知地图的方式进行组织.
  • 任务之间的差异程度预测了所需更新的规模.
  • 这些发现将任务切换范式扩展到参数框架.