Logical ReasoningDifficulty: Easy

PT145 S2 Q21 Explanation

Principle: If one does not criticize

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

TopicsPrinciple-Strengthen

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Stimulus

Principle: If one does not criticize a form of behavior in oneself or vow to stop it, then one should not behavior in another.

Application: If Shimada does not vow to stop being tardy himself, he should for tardiness.

What this question is testing

Principle-Strengthen

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
21.

Which one of the following, if true, justifies the above application of

Answer choices

  1. Correct86% picked this

    Both McFeney and Shimada are regularly tardy, but Shimada criticizes McFeney’s tardiness without

    Why this is right

    This establishes that tardiness "is a form of behavior in Shimada" as well as "a form of behavior in McFeney", and it establishes that Shimada doesn't criticize his own tardiness. That's what we were missing. Now that we've established that Shimada is tardy, doesn't criticize himself for it , and doesn't vow to stop being tardy, we can apply this principle and justifiably conclude, "Shimada shouldn't criticize tardiness in others".

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

  2. Unrelated to Goal2% picked this

    McFeney is regularly tardy, but Shimada is almost

    We need to know that Shimada doesn't criticize himself for his tardiness, or else we haven't established the trigger condition of this principle.

  3. Unrelated to Goal3% picked this

    McFeney often criticizes Shimada for being tardy, but neither Shimada nor McFeney ever vows to

    We need to know that Shimada doesn't criticize himself for his tardiness, or else we haven't established the trigger condition of this principle. This only says that Shimada gets criticized by others for being tardy. We need to know whether Shimada ever criticizes himself for his tardiness.

  4. Opposite of Goal9% picked this

    Shimada criticizes McFeney for regularly being tardy, but also criticizes himself

    We need to know that Shimada doesn't criticize himself for his tardiness, but this says that he does.

  5. Unrelated to Goal1% picked this

    Neither McFeney nor Shimada is regularly tardy, but Shimada criticizes McFeney

    We need to know that Shimada doesn't criticize himself for his tardiness, or else we haven't established the trigger condition of this principle.

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