OG 13 一道没看懂解释的CR 题

movingever

A researcher discovered that people who have low levels of immune-system activity tend to score much lower on tests of mental health than do people with normal or high immune-system activity. The researcher concluded from this experiment that the immune system protect against mental illness as well as against physical disease.

The researcher's conclusion depends on which of the following assumptions?
A. High immune system activity protects against mental illness better than normal immune-system activity does.
B. Mental illness is similar to physical disease in its effects on body system.
C. People with high immune-system activity cannot develop mental illness.
D. Mental illness does not cause people's immune-system activity to decrease.
E. Psychological treatment of mental illness is not as effective as is medical treatment.


The answer is D


assumption 题是我的弱项，求指点。

Steven0124

这个问题我来回答吧：）
还记得7宗罪吗？这个是非常典型的“因果谬误”。
低免疫力的人，趋向于精神不健康。
由此，作者推出低免疫力是精神不健康的原因。

那么，我同样可以得出：精神不健康，是低免疫力的原因。

D作为assumption点明：精神不健康不是低免疫力的原因。
如果是真，则加强结论；如果是假，则削弱结论。

所以是D。

希望有帮助：）

movingever

谢谢，这题我是明白了，能否推荐一些初步复习CR的资料呢。因为我刚开始复习，就直接做题，感觉效果不怎么好。

Steven0124

初步复习CR的资料，就是OG。
国内MBA统考有个逻辑方面的大纲（或者是个教材），那个没啥用，真正考试时用那个思维就惨了，时间不允许。
可以看看ARGUMENT的写作，有个7宗罪，基本上所有的逻辑错误都和7宗罪有关。

别的材料topway有很多，都不错，也都有局限性。

总之，经历过一道题研究上一个小时之后，很多旁支题、同类题就可以一下子豁然开朗了。

开始效果不好，是正常的，坚持下去，你会发现逻辑的乐趣：）

movingever

呵呵，谢谢你的鼓励