300难题逻辑

mnmicy · 发表于 2020-7-4 17:05:09

                  Errors in the performance of repetitive or “boring” tasks—often attributed to a momentary  lapse in concentration—can be serious in such activities as flying a passenger aircraft. Is there  any method that would provide warning of such lapses—for example by monitoring brain  activity? Researchers scanned the brains of volunteers performing a repetitive task. When the  tasks were being performed correctly, the volunteers’ brains showed activity in cognitiveprocessing regions. However, these regions became less active several seconds before some  errors were made, and another brain region, region X, became active. The researchers  concluded that the monitoring of region X could provide warning of an impending error. Which of the following, if true, most supports the researchers’ conclusion?

                                                C
                                                                                 Other research found that whenever significant activity occurs in region X, it is generally  with repetitive tasks, soon before an error occurs.
D                                                                                                          The diminution of brain activity in cognitive processing regions and the increase of activity  in region X began at least 5 seconds before the errors occurred.

                  各位大神能否讲解一下 D是怎么排除的  万分感谢！！！

Andy-A · 发表于 2020-7-6 21:23:37

D. This does not provide additional support for the claim that monitoring region X will be useful as a warning of an impending error. After all, the statement that activity in region X began at least 5 seconds before the errors occurred rules out only that the increase in activity in region X occurred less than 5 seconds before the errors occurred. This statement does not rule out the possibility that the increase came, for example, many hoursbeforetheerroroccurred.
官方解释，感觉最后一句因该有帮助吧。
我也做错了这道题。

小小豆豆酱 · 发表于 2020-7-13 21:51:01

是不是提前5秒出现对能否通过检测X区域来判断有没有错误没有影响。
逻辑上来说，只要是X区域提前出线反应就可以预测错误了，五秒两秒十秒有关系吗？

mnmicy · 发表于 2020-7-15 15:19:28

Andy-A 发表于 2020-7-6 21:23
D. This does not provide additional support for the claim that monitoring region X will be useful as ...

万分感谢

mnmicy · 发表于 2020-7-15 15:20:18

小小豆豆酱发表于 2020-7-13 21:51
是不是提前5秒出现对能否通过检测X区域来判断有没有错误没有影响。
逻辑上来说，只要是X区域提前出线反应就 ...

我逻辑很不好

ST5 · 发表于 2020-7-24 11:34:36

这道CR题目如果你训练过CR里的correlation vs causality或者有集合的基本概念或者充分必要条件，就比较容易懂。
题目已知error一定伴随着region X active，但是没有说region X active的时候有没有error，完全可能region X 常年active，或者经常乱发脑电波而已知active。如果要得出region X active和error强相关来作为诊断标准，需要排除我说的这个可能，也就是region X active事件一定伴随着error出现，也就是答案C。
有点类似集合里的A is subset of B, 如果要得出A=B，就需要B is subset of A.

D里面region X active发生在error 前at least 5secs不能说明任何事情，我上面的那个异常情况还是有可能存在。而且at least 5sec某种意义上是削弱了题目的观点。比如发生在hours before error，那正好说明region X active与error没什么关联。

harper123456 · 发表于 2023-4-14 10:09:53

ST5 发表于 2020-7-24 11:34
这道CR题目如果你训练过CR里的correlation vs causality或者有集合的基本概念或者充分必要条件，就比较容易 ...

同意！

300难题逻辑

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300难题 逻辑

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300难题逻辑