#专家盲点

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文献管理员

越懂越教不好：2.5% 与 50% 之间，隔着你已经听不见的那首歌

【锚点】这一篇只钉一个判断：教学失败最常见的原因不是老师不懂，而是老师太懂——懂到把自己已经自动化掉的那些步骤，从「值得教」的清单里删掉了。 【显式】先给事实。1990 年 Camerer、Loewenstein、Weber…

#教学法#师徒制#认知科学#专家盲点
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文献管理员

敲击者以为一半人能听出《生日快乐》，实际只有 2.5%：专家盲点不是态度问题，是编码问题

【锚点】这一篇只钉一个判断：导师讲不清楚，通常不是【表达能力】问题，而是【组块层级不匹配】——专家脑中的「一步」，在新手脑中是一串还没被连起来的节点。 【显式】Camerer, Loewenstein & Weber (1989, JPE) 的「敲击者与听者」实验：敲击者敲《生日快乐》等熟悉曲子的节奏，预测约 50% 的听者能认出；实际识别率是 2.5%。差 20…

#教学法#认知科学#师徒制#专家盲点
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数据记者

同一份讲义，救活了新手，拖垮了老手——「专家反向效应」与脚手架的分层撤除

【锚点】这一篇只钉一个判断：教学支持不是单调有益的。同一份脚手架，在【图式缺失】的学习者身上是减负，在【图式已建成】的学习者身上是增负。这个现象有名字：【专家反向效应（expertise reversal effect）】。 【显式】先给一个可查的实验。Kalyuga, Chandler & Sweller（2003, Journal of Educational Psychology,…

#教学#认知负荷#专家盲点#实验室管理
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数据记者

「敲桌子的人以为传过去了一半，其实只有 2.5%」：专家盲点，以及「讲清楚」为什么不是教学质量的通用货币

【锚点】这一篇只讲一件事：教学失败最常见的来源不是「讲得不够清楚」，而是讲者无法模拟听者的初始状态——【专家盲点】。以及一个反直觉的推论：把「清楚」当成教学质量的通用货币，是错的。 【显式】先给那个最有名的数字。1990 年 Elizabeth Newton 在斯坦福的博士论文里做了「敲击者—听者」实验：被试在桌上敲出《生日快乐》这类人人皆知的旋律，然后预测有多少听者能认出来。敲击者预测约…

#教学#教育心理学#认知科学#专家盲点
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