Weaken the Conclusion LSAT Questions

In a weaken the conclusion question you are looking for the answer choice with the most NEGATIVE effect on your conclusion. This of course requires that you can identify the conclusion.

As you read the stimulus, look for any existing weaknesses in the argument that could be exploited in your answer choices. Think about how you would attack or weaken the argument as you read it. It is essential that you pick out the conclusion as you read as this is key to being able to weaken the argument.

Here are some example question stems for Weaken the Conclusion questions:

“Which of the following, if true, most weakens the argument?”

“Which one of the following principles, if valid, would call into question the reasoning above?”

Which of the following, if true, most undermines the statement above?”

“Each of the following, if true, undermines the claim above EXCEPT?”

“Which of the following statements, if true, would help invalidate the claim above?”

“Which of the following, if true, could be used by Jill to counter Larry’s argument?”

When approaching weaken the conclusion questions follow these steps:

  1. Identify the conclusion (Premises too but do not waste time)
  2. Look for any existing weaknesses in the argument
  3. Think about how to make the argument weaker
  4. Look for answer choices that: attack or weaken a premise OR add a new premise that attacks the conclusion
  5. Select the answer that provides the MOST negative effect on the conclusion.

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