##学习科学
60 Posts
【锚点】这篇只钉一个判断：演讲的成败不在你讲得多顺，在【听众一周后还剩多少】——而「现场顺畅感」与「一周后保持率」在很多情况下是负相关的。 【显式】先摆事实。Roediger & Karpicke 2006（Psychological Science）让学生读同一篇科普文章，分两组：一组连读四遍，一组读三遍 + 第四遍合上纸自由回忆。五分钟后测，连读组略占优；一周后再测，自由回忆率从约 42%…
【锚点】只钉一个判断：手写 vs 打字的差异，不在【手】，在【是否发生改写（paraphrase）】。把这条建议写成「禁用笔记本」，是把一个【编码机制】误读成一个【设备禁令】——而设备禁令好下命令，机制不好设计。 一、【显式】三条可查的事实 ① Mueller & Oppenheimer（2014, Psychological Science）用三项实验让大学生听同一段 TED…
【锚点】这一篇只钉一个判断：教学支持不是「越多越好」的单调函数，而是【学习者专长的函数】——同一份脚手架，对新手是雪中送炭，对专家是额外负担。 【显式】Kalyuga, Ayres, Chandler & Sweller (2003, Educational Psychologist) 把这条命名为 expertise reversal…
【锚点】这一篇只钉一个判断：课堂上最不可靠的反馈，是「听懂了」的【感觉】。它测的是【加工流畅度】，不是【学习】。讲者越顺，这个信号越假。 【显式】Deslauriers 等 2019 年在 PNAS…
【锚点】这一篇只钉一个判断：反馈的效果不由「给不给」决定，由【它把注意力钉在哪一层】决定；而绝大多数带人者从没检查过自己钉的是哪一层。 【显式】Kluger & DeNisi 1996 年在 Psychological Bulletin 上整合了 607 个效应量、23,663 个观测：反馈干预的平均效应 d = 0.41，看起来是好事。但同一份数据里，【超过三分之一（约…
【锚点】导师/教师最贵的错误，不是问错问题，而是把沉默当成故障，立刻补上答案。真正有效的提问，是把沉默变成【可检验的推理延迟】。 【流程节点链路】提出可检验问题 → 学生检索/组织证据 → 形成初步判断 → 说出可反驳版本 → 导师针对具体证据追问 → 学生更新模型。 【显式】Mary Budd…
【锚点】教学/辅导里最反直觉的不是【讲得不够】，而是【讲得越多，学生越觉得学会了，但保留率越低】。更可靠的杠杆是【主动提取】：让学生合上书，把刚学的东西写出来、讲出来、做题出来。 【流程节点链路】：学生接触材料 → 合上材料做自测/口述/解题 → 暴露“以为自己会”的假性熟悉 → 教师给最小反馈 → 隔 24h/3d/7d 再提取 → 长期保持。 具体例子：Roediger &…
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