Logical ReasoningDifficulty: Easy

PT131 S3 Q2 Explanation

A university psychology department

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

TopicsWeaken

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Stimulus

A university psychology department received a large donation from a textbook company after agreeing to use one of the company's books for a large introductory course. The department chair admitted that the department would not have received the donation if it used another company's textbook, but insisted that the book was chosen the department's textbook committee had given that textbook its highest rating.

What this question is testing

Weaken

Your task

Find the choice that makes the argument's conclusion less likely to be true.

Common trap

Answers that look negative but attack a claim the argument never relied on.

Winning move

Find the assumption the argument depends on, then pick the choice that undermines it.

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

The question
2.

Which one of the following, if true, most weakens the case for the

Answer choices

  1. Correct91% picked this

    The members of the textbook committee were favorably influenced toward the textbook by the prospect of their department

    Why this is right

    This makes the donation at least somewhat responsible for the textbook committee’s decision. Note the degree in the conclusion, “solely for academic reasons.” This shows that is not true.

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

  2. Strengthen1% picked this

    The department has a long-standing policy of using only textbooks that receive the

    This makes it more likely that the academic reasons were the sole reason. Though it’s still possible that the donation motivated the textbook committee’s rating, so it barely strengthens the argument.

  3. Too Weak1% picked this

    In the previous year, a different textbook from the same company was used in

    While a savvy student might suspect collusion to force students to buy expensive new books, this doesn’t indicate why a different textbook was used.

  4. Out of Scope4% picked this

    The department chair is one of the members of the

    There is no reason to question the department chair’s motives in particular. It’s not clear that the department chair would unduly gain relative to other members of the department.

  5. Strengthen2% picked this

    The textbook company does not routinely make donations to academic departments that

    This weakens the correlation between a donation and deciding to use the company’s book, thereby making it more likely that academic reasons were solely responsible.

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