All posts tagged: Weaken

Critical Reasoning.002

Critical Reasoning: Correlation-Causation — Weaken Question 2

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 …

Critical Reasoning.002

Critical Reasoning: Correlation-Causation — Weaken Question 1

The biggest misconception about Critical Reasoning questions on the GMAT® is that they are based on common sense. Well, nothing could be farther from the truth. In fact, CR questions are based on rules of formal logic. The question from the Official Guide (OG) below is a perfect illustration. A study of marital relationships in which one partner’s sleeping and waking cycles differ from those of the other partner reveals that such couples share fewer activities with each other and have more violent arguments than do couples in a relationship in which both partners follow the same sleeping and waking patterns. Thus, mismatched sleeping and waking cycles can seriously jeopardize a marriage. Which of the following, if true, most seriously weakens the argument above? (A) Married couples in which both spouses follow the same sleeping and waking patterns also occasionally have arguments that can jeopardize the couple’s marriage. (B) The sleeping and waking cycles of individuals tend to vary from season to season. (C) The individuals who have sleeping and waking cycles that differ significantly …