All posts tagged: GMAT CR

Critical Reasoning – The Conclusion Question 2

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In the previous Critical Reasoning post we discussed one specific kind of logic that is tested on the Conclusion Question Type. In this post we will take a look at the only other type of standard logic tested on the conclusion questions. If you are able to understand apply the technique to solve these two logical structures, most conclusion questions should be a breeze. Let us take a GMAT Critical Reasoning question to examine this further. Although aspirin has been proven to eliminate moderate fever associated with some illnesses, many doctors no longer routinely recommend its use for this purpose. A moderate fever stimulates the activity of the body’s disease-fighting white blood cells and also inhibits the growth of many strains of disease-causing bacteria.

Critical Reasoning – The Conclusion Question 1

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Of all Critical Reasoning Question Types on the GMAT® , the conclusion question is probably the easiest of the lot. The only thing that one needs to remember is that the conclusion should not be a possibility but a certainty based on the information given. Test-takers sometimes tend become adventurous and choose options that are not fully supported by the information since the correct option seems too obvious. But on the GMAT® it is the most straightforward option that turns out to be the conclusion.

Critical Reasoning: Correlation-Causation 3

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In the previous two posts, we saw how Weaken-Type Critical Reasoning questions based on correlation-causation passages can be solved in under a minute. Just to summarize, X and Y are correlated does not mean X is causing Y since there is no evidence to prove that the direction of causation is from X to Y, it can also be from Y to X So based on arguments that conclude that X is causing Y since X and Y are correlated, Assumption and Strengthen questions can also be asked. Assumption Type: The assumption is that Y is not causing X. 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 protects 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) …

Critical Reasoning: Correlation-Causation — Weaken Question 2

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In the previous post, we saw how Critical Reasoning questions on the GMAT® are based on rules of formal logic. We took the specific case of the arguments that incorrectly assume that correlation implies causation. Just to summarize, X and Y are correlated does not mean X is causing Y since there is no evidence to prove that the direction of causation is from X to Y, it can also be from Y to X there can be a different reason, Z, for the occurrence of Y. So based on arguments that conclude that X is causing Y since X and Y are correlated, there can be three types of questions that can be asked — Weaken, Assumption and Strengthen. Weaken Type: Correct Option will always show that in fact Y is causing X (third cause Z is usually not given in the options since it will make the answer two obvious) Researchers have concluded from a survey of people aged 65 that emotional well-being in adulthood is closely related to intimacy with siblings earlier …