Logical ReasoningDifficulty: Hard

PT118 S3 Q19 Explanation

Editorial: Medical schools spend one

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

TopicsNecessary Assumption

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Stimulus

Editorial: Medical schools spend one hour teaching preventive medicine for every ten hours spent teaching curative medicine, even though doctors’ use of the techniques of preventive medicine cuts down medical costs greatly. Therefore, if their goal medical schools spend insufficient time teaching preventive medicine.

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
19.

Which one of the following is an assumption on which the editorial’s

Answer choices

  1. Out of Scope: initial costs11% picked this

    Preventive medicine makes use of technologies that are lower in initial cost than the technologies used within the

    We only know that overall preventative medicine is cheaper. We can't take that claim and then zoom in on any individual part of preventative vs. curative and assume that the preventative part is cheaper. It's possible that the initial cost of a preventative medicine technology is higher (or equal) to that of a curative medicine technology. Since way more people would receive preventative medicine than curative medicine, that equally or more expensive preventative technology might still save money in the long run by being "amortized" on a much bigger base of patients. Some people use the term Premise Booster to describe an answer like this, which essentially tries to give us the backstory on a Premise. This answer has nothing to do with the conclusion, about whether or not med schools are spending sufficient or insufficient time teaching preventative.

  2. Too Specific: Every Hour Reduces 10%8% picked this

    Every hour devoted to the teaching of preventive medicine reduces medical costs by 10

    Does the author need this specific math relationship to be true? Would it matter if some hours devoted to teaching preventative medicine reduce by 9% and other hours reduce by 11%? The 10% in this answer choice matches the idea that the time med school spend on preventative is 10% of what they spend on curative. The author is just saying that they spend 10% as much time on curative, even though curative cuts down medical costs "greatly". Those two claims don't commit the author to believing some weirdly specific idea that each hour of preventative teaching reduces costs by at least 10%. Even if every hour of preventative teaching reduced costs by only 5%, the author's conclusion could still be true --- spending more time on preventative medicine could still help achieve the goal of making medicine more cost-effective.

  3. Out of Scope: Increasing Total Hours4% picked this

    Medical schools could increase their total number of

    The author doesn't need to believe that total hours would have to be increased or that medical schools could increase their total hours. The author might believe that med schools should just be shifting more of the hours spent on curative medicine over to preventative medicine. If the students get 110 hours of instruction, and it's currently 10 on preventative and 100 on curative, then the author might just be thinking that med schools should be re-allocating those hours to be more like 40 and 70.

  4. Too Strong7% picked this

    Improvements in doctors’ use of the techniques of curative medicine would only increase

    Too Strong: Would Only Increase Out Of Scope: Improvements In Curative We have no idea how the author feels about improvements in curative medicine. The author's argument is only about how med schools are allocating their hours, in the present tense. She hasn't committed to any beliefs about the future, and it would be extreme for her to believe that any improvement in curative medicine techniques will always increase overall medical costs.

  5. Correct70% picked this

    The time required to teach preventive medicine thoroughly is greater than one hour for every ten that are

    Why this is right

    In simpler words, this answer is just saying, "The author is assuming that teaching preventive medicine thorougly would take more time than it's currently being given". Does our author believe that? Definitely! Her whole conclusion is that medical schools are spending insufficient time. She clearly thinks that more time should be spent on preventative medicine, which means she thinks that med students are missing out on something with the current number of hours spent on curative medicine. So she thinks that, if you want to teach preventative thoroughly, you need more than 1/10 the hours currently spent on curative. If we negated this answer, would it weaken? Definitely. It would be saying, "The time that's required to teach preventative medicine thoroughly is not any greater than what's currently being spent on it. Thus, we are spending sufficient time teaching preventative medicine."

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

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