Logical ReasoningDifficulty: Easy

PT120 S4 Q4 Explanation

The purpose of the physical

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

TopicsMain Conclusion

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Stimulus

The purpose of the physical sciences is to predict the order in which events will succeed one another. Human behavior, also, can sometimes be successfully predicted. However, even successful predictions of human behavior do not provide an understanding of it, for understanding a human action requires knowing its goal, need not be obtained in the case of nonhuman behavior.

What this question is testing

Main Conclusion

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
4.

Which one of the following most accurately expresses the

Answer choices

  1. Correct86% picked this

    Successful predictions of human behavior do not constitute an understanding of

    Why this is right

    Answer choice (A) matches our rephrased conclusion and captures the argument's main point about the distinction between prediction and understanding in human behavior.

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

  2. Opposing Idea8% picked this

    One cannot predict an instance of human behavior without an understanding of the agent’s purpose in

    This contradicts the author's perspective by suggesting a necessity for understanding goals to predict behavior, which was not claimed in the passage.

  3. Inference-Bait2% picked this

    In some cases, but not in others, understanding an event consists in the ability to predict the

    This introduces an unstated idea, so it shouldn't be tempting as a match for our conclusion. Its weak language is meant to bait people who think they're doing a Most Supported question, rather than being asked to point to the explicit claim that counts as the Main Conclusion.

  4. Background4% picked this

    The goal of the physical sciences is to predict the order in which

    This restates a background fact about physical sciences, but does not capture the main conclusion, which concerns the nature of understanding human behavior.

  5. Assumption-Bait0% picked this

    The methods used to predict human behavior must involve reference to the psychological states

    This was never stated, so it should be unappealing as a match for our explicit conclusion. They are trying to bait us with something ELSE the author would probably believe. If she thinks that understanding human behavior requires knowing its goal, which is a psychological fact not a physical fact, then she would probably agree that predicting human behavior necessitates thinking about psychological states.

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