Logical ReasoningDifficulty: Hard

PT145 S2 Q18 Explanation

Historian: Those who claim that

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

TopicsFlaw

Keep going in LSAT Lab

  • Save & drill this skill build targeted practice sets from questions like this one

  • Video walkthroughs watch every question solved step by step

  • 81 official LSATs as questions, timed sections & full-length tests

Full official LSAT questions are available through LawHub. This page provides LSAT Lab's explanation, strategy, and review tools without republishing the full official question.

Stimulus

Historian: Those who claim that Shakespeare did not write the plays commonly attributed to him are motivated purely by snobbery. Shakespeare was the son of a glove maker, whereas every other person proposed as the true author of the plays was an aristocrat, and many of these aristocrats wrote the plays are the aristocrats’ descendants.

What this question is testing

Flaw

Your task

Describe the reasoning error the argument actually commits.

Common trap

Answers that name a real logical flaw the argument doesn't actually make.

Winning move

Articulate the gap in the reasoning yourself, then match it to the choice that describes that 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
18.

The reasoning in the historian’s argument is most vulnerable to criticism on the grounds

Answer choices

  1. Bad Premise/Conclusion Match17% picked this

    presumes, without providing justification, that a claim cannot be true if those who advance it

    This accuses the argument of being, "Since the people claiming X are motivated purely by snobbery, X is false." The argument was actually, "Since many of the people claiming X are descendants of rich people whereas Shakespeare was relatively poor, the people claiming X are motivated purely by snobbery".

  2. Not a Flaw22% picked this

    takes for granted that anyone who is motivated purely by snobbery cannot also be motivated

    This is a valid assumption / inference to make. If I'm motivated purely by snobbery, then by definition I'm not motivated by money, fame, jealously, legitimate historical evidence, etc. This portrays the argument as being, "Since they are motivated purely by snobbery, we can conclude that they were not motivated by historical evidence". This doesn't match the argument core, but it is also a valid argument. If you accept that premise, then you have to accept that conclusion.

  3. Out of Scope4% picked this

    fails to consider adequately the possible motives of those who claim that Shakespeare did write the plays

    Out of Scope: people who claim Shakespeare was writer We're only assessing the motives of people who claim Shakespeare was not the writer. It's not relevant what the motives are of people who claim that Shakespeare was the writer.

  4. Correct54% picked this

    fails to exclude the possibility that there might be legitimate evidence motivating those who

    Why this is right

    Fails to consider / Ignores possibility phrasing means they're presenting us with a potential objection. Would it weaken the argument to say there is legitimate evidence motivating those who say Shakespeare didn't write those plays? Of course. That would contradict the idea that these people are motivated purely by snobbery.

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

  5. Wrong Flaw3% picked this

    makes use of an assumption that one would accept only if one has already accepted the

    This describes the famous flaw of Circular Reasoning, in which the conclusion is a reiteration of the premise. The author's argument wasn't circular. He did assume that descendants of aristocrats could be motivated by snobbery to deny authorship to someone (Shakespeare) who wasn't the child of an aristocrat. However, one could accept that assumption without having accepted that "all the people who claim Shakespeare wasn't the other are 100% motivated by snobbery".

Continue the review in LSAT Lab

Save this question, watch the video walkthrough, and drill similar questions in your LSAT Lab account.

LSAT Lab

Turn this review into a targeted study plan.

Save this question, drill more like it, watch the video walkthrough, and track your progress in your LSAT Lab account.

Start practicing free