Logical ReasoningDifficulty: Medium

PT3 S2 Q2 Explanation

For a television program about astrology

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

TopicsFlaw

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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

For a television program about astrology, investigators went into the street and found twenty volunteers born under the sign of Gemini who were willing to be interviewed on the program and to take a personality test. The test confirmed the investigators’ personal impressions that each of the volunteers was more sociable and supports the claim that one’s astrological birth sign influences one’s personality.

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
2.

Which one of the following, if true, indicates the most serious flaw in the method used

Answer choices

  1. Trap1% picked this

    The personality test was not administered or scored personally by

  2. Trap3% picked this

    People born under astrological signs other than Gemini have been judged by astrologers to be much less sociable

  3. Trap6% picked this

    The personal impressions the investigators first formed of other people have tended to be confirmed by the investigators’

  4. Trap11% picked this

    There is not likely to be a greater proportion of people born under the sign of Gemini on the street than in

  5. Correct78% picked this

    People who are not sociable and extroverted are not likely to agree to participate in

    Why this is right

    Answer E is correct.

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

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