Logical ReasoningDifficulty: Medium

PT103 S1 Q20 Explanation

There is strong evidence that the

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

TopicsParadox

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Stimulus

There is strong evidence that the cause of migraines (severe recurrent headaches) is not psychological but instead is purely physiological. Yet several studies have found that people being professionally treated for migraines rate higher on a do people not being professionally treated for migraines.

What this question is testing

Paradox

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
20.

Which one of the following, if true, most helps to resolve the apparent discrepancy in

Answer choices

  1. Reinforces Background1% picked this

    People who have migraine headaches tend to have relatives who also

    The fact that relatives tend to share this trait suggests that migraines are hereditary, which underscores the background belief that migraines have a physiological basis. But this answer isn't doing anything to explain our curious foreground fact: why are people who are treated for migraines higher on the anxiety scale?

  2. Goes Against Background17% picked this

    People who have migraine headaches often suffer these headaches when under

    If we interpreted this answer to be saying that "emotional stress causes the migraines", then we'd potentially have a storyline for why people with migraines rank high on the anxiety scale. But that would mean that migraines are caused sometimes by psychological factors (emotional stress), so we'd be going against the background fact, not reconciling it with the surprising fact.

  3. Correct76% picked this

    People who rate higher on the standard psychological scale of anxiety are more likely to seek professional treatment than are people who

    Why this is right

    This answer is resolving the paradox by suggesting that, while anxiety doesn't cause you to have migraines, it does cause you to be more likely to seek professional treatment for migraines. So if the more-anxious migraine sufferers are more likely to seek professional treatment, then there will be a correlation between being high-anxiety and getting treated for migraines.

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

  4. No impact5% picked this

    Of the many studies done on the cause of migraine headaches, most of those that suggest that psychological factors such as anxiety

    We are accepting as a given that psychological things do not cause migraines. So whether studies that say they do have been widely publicized or only moderately publicized or kept mostly secret, who cares? We're not listening to these studies. We need a way to explain a correlation between being professionally treated for migraines and being high-anxiety.

  5. Nothing About Anxiety2% picked this

    Most people who have migraines and who seek professional treatment remain in treatment until they stop having migraines, whether their doctors consider the

    This doesn't mention anxiety, so it doesn't seem to be giving us any way to explain a correlation between being treated for migraines and being high-anxiety.

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