Logical ReasoningDifficulty: Medium

PT140 S1 Q10 Explanation

Vincent: No scientific discipline

A free, expert breakdown of this official LSAT Logical Reasoning question.

TopicsAgree/Disagree

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Stimulus

Vincent: No scientific discipline can study something that cannot be measured, and since happiness is an entirely cannot be measured.

Yolanda: Just as optometry relies on patients' reports of what they see, happiness research relies on subjects' reports of how they a scientific discipline.

What this question is testing

Agree/Disagree

Your task

Break the argument into its conclusion and evidence, then do exactly what the question stem asks with that structure.

Common trap

Answers that sound relevant to the topic but don't connect to the argument's actual reasoning.

Winning move

Predict what a right answer must do, then test each choice against the conclusion-evidence gap.

Reading along? Open the full official question in LawHub — we show a fragment here and keep the reasoning in our own words.

The question
10.

Vincent's and Yolanda's statements provide the most support for concluding that they disagree over which one

Answer choices

  1. Unsupported Disagree Position6% picked this

    Happiness is an entirely subjective

    If anything, we would assume that Yolanda and Vincent agree on this matter. Vincent clearly agrees with this, but we can't derive from Yolanda that happiness isn't entirely subjective. Can we support, from her paragraph, that "at least part of happiness is an objective experience"? No.

  2. Out of Scope Person 1: optometry2% picked this

    Optometry is a scientific

    We know that Yolanda agrees to this, but we couldn't derive from Vincent's statements that he thinks that optometry is not a scientific discipline.

  3. Correct78% picked this

    A scientific discipline can rely on

    Why this is right

    Vincent would disagree. In going from claim 2 to claim 3, he's assuming that "if entirely subjective experience, then can't be measured", and his claim 1 says that "if can't be measured, then scientific discipline can't study it". So Vincent is logically committed to "If entirely subjective, then can't have scientific discipline". Yolanda would agree with this, because these thinks that optometry "relies on subjective reports" and "is a scientific discipline".

    Skill tested: Agree/Disagree · how this choice captures the argument's function is the move to repeat next time.

  4. Out of Scope Person 1: optometry7% picked this

    Happiness research is as much a scientific discipline as

    Since Vincent never discusses optometry, we know we can't derive his opinion on this answer choice.

  5. Trap8% picked this

    Experiences that cannot be measured are entirely

    Reversed Logic of Person 1 Out of Scope Person 2: can't be measured Vincent committed himself to this assumption: entirely subjective ? can't be measured This answer choice is saying, can't be measured ? entirely subjective So, we have no way to infer Vincent's position on the conditional in this answer choice, because all he said relating to this connection was a reversed version. We have no idea if the thinks this connection works in the opposite direction as well, so we don't know whether he agrees or disagrees.

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