Logical ReasoningDifficulty: Hard

PT109 S1 Q13 Explanation

Ethicist: Studies have documented the

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

TopicsNecessary Assumption

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Stimulus

Ethicist: Studies have documented the capacity of placebos to reduce pain in patients who believe that they are receiving beneficial drugs. Some doctors say that they administer placebos because medically effective treatment reinforced by the placebo effect sometimes helps patients recover faster than good treatment alone. But administering placebos is nonetheless ethically it just to give the patient satisfaction that something was being done.

What this question is testing

Necessary Assumption

Your task

Find the assumption the argument requires in order for its conclusion to hold.

Common trap

Answers that would help the argument but aren't strictly required (sufficient, not necessary).

Winning move

Negate each choice — the right one breaks the argument when negated.

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

The question
13.

The ethicist’s argument depends on which one of the

Answer choices

  1. Too Strong22% picked this

    A patient’s psychological satisfaction is not a consideration in administering

    The author is definitely assuming it's not the only consideration, or else she'd probably be okay with administering a placebo in order to appease the patient's psychological satisfaction. But our author doesn't have to assume it's not a consideration at all. If we negate this and say that patient psychological consideration is a consideration, that doesn't do much to say that this is therefore ethically questionable.

  2. Correct65% picked this

    The motivation for administering a placebo can be relevant to the ethical justification

    Why this is right

    This is lovably weak since it's just saying "can be relevant". That means that when we negate it, we'll get a very powerful idea. Does this negation hurt the argument: the motivation for why you administer a placebo can never be relevant to the ethical justification for administering it. Yes! The author is saying, "it's questionable whether administering a placebo would be ethically justifiable if a doctor is prescribing it with the motivation of just trying to give the patient satisfaction that something was being done." If the motivation for administering a placebo has no relevance to whether it's ethically justified, then the author's argument would just fall apart.

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

  3. Too Strong: indefensible7% picked this

    Medical treatment that relies on the placebo effect alone is

    The author is only saying that the placebo treatment is questionable, not indefensible.

  4. Opposite3% picked this

    The pain relief produced by the placebo effect justifies the deception involved in

    The author is ethically uneasy about giving a placebo in certain circumstances, even if it does provide pain relief. This answer is saying "the deception is justified!" That sounds like someone who is ethically comfortable with placebos, not like our author.

  5. Out of Scope2% picked this

    Administering a placebo is not ethically justified if that treatment is not prescribed

    Out of Scope: not prescribed by a doctor Even though this answer seems pretty plausible, it's not covered by the argument. The author is only talking about doctors prescribing placebos. We don't know what this person would think about someone else administering a placebo.

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