Logical ReasoningDifficulty: Hard

PT105 S4 Q18 Explanation

In a study in which

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

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Stimulus

In a study in which secondary school students were asked to identify the teachers they liked the best, the teachers most often identified possessed a personality that constitutes 20 percent of the general public but only 5 percent of teachers. Thus be the best-liked teachers from entering the profession.

What this question is testing

Weaken

Your task

Find the choice that makes the argument's conclusion less likely to be true.

Common trap

Answers that look negative but attack a claim the argument never relied on.

Winning move

Find the assumption the argument depends on, then pick the choice that undermines it.

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

The question
18.

Which of the following, if true, most weakens

Answer choices

  1. Unclear Impact: medical profession3% picked this

    People with the personality type constitute 5 percent of the

    What impact this answer has kind of depends on whether we think that a factor that would keep people out of teaching would also keep them out of medicine. I can see some people thinking, "The author thinks that something like low pay is keeping people with Personality X from entering teaching. But low pay wouldn't be a concern with entering the medical profession. So this is like a No Cause, Effect weakener." That's too much of a story for us to be filling in on our own. Also, let's say that Personality X is someone who is very empathic -- they really feel the feelings of the people they're with. Students would probably love teachers like that, but empathic people get exhausted by experiencing everyone's emotions, so you could see the emotional drain of caring about students (in teaching) or caring about patients (in medicine) actually could be a factor that discourages people with Personality X from entering both teaching and medicine.

  2. Strengthens, if anything16% picked this

    People with the personality type constitute 5 percent of college students pursuing a

    This fact seems to superimpose on top of the author's current story: even though Type X is found in 20% of the general population, it's only found in 5% of teachers. This answer is adding, "yup, it's only 5% of people trying to get a degree so they can enter the teaching profession".

  3. No Impact: beloved teachers' students9% picked this

    Students of teachers with the personality type are intensely recruited for

    This answer is talking about the students of teachers with Personality X? What does that have to do with explaining why Personality X is underrepresented among teachers? We can't add an assumption that students take on the personalities types of their teachers.

  4. No Impact: beloved teachers' students8% picked this

    Students with the personality type are more likely to be liked by teachers than those

    This answer is talking about the students of teachers with Personality X? What does that have to do with explaining why Personality X is underrepresented among teachers? This seems to just add more evidence that Personality X is associated with being pretty likable, whether it's students liking teachers or teachers liking students. But who cares if students are liked or not liked by their teachers? We need to explain why Personality X shows up in 20% of the population but only 5% of teachers.

  5. Correct65% picked this

    Teachers with the personality type are more likely to quit teaching than those with

    Why this is right

    This provides an Alternate Explanation for the curious fact, and it allows us to argue the Anti-Conclusion: Nothing is discouraging people with Personality X from entering teaching (anti-conclusion). 20% of the general public has Personality X, and 20% of people who enter teaching presumably have that personality type. But teachers with type X are more likely to quit teaching, so over time, the roster of teachers becomes more and more underrepresented when it comes to teachers with Personality X. This is kind of like if you were at a friend's house and their mom had a big bowl of Skittles always out on the coffee table. You noticed that even though red skittles are 20% of the skittle flavors, they are only 5% of the remaining Skittles in the bowl. You conclude that "something must be discouraging my friend's mom from putting more red Skittles into the bowl." This answer is saying, "Nah, red skittles were 20% of the bowl when they entered the bowl. But people are more likely to remove red skittles than other as they periodically snack from a Skittle bowl." Over time, the red ones become more and more underrepresented.

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

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