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20 Sep 2021, 01:00
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
76% (01:34) correct
24%
(01:54)
wrong
based on 213
sessions
History
Date
Time
Result
Not Attempted Yet
Psychologist: A study of 436 university students found that those who took short naps throughout the day suffered from insomnia more frequently than those who did not. Moreover, people who work on commercial fishing vessels often have irregular sleep patterns that include frequent napping, and they also suffer from insomnia. So it is very likely that napping tends to cause insomnia.
The reasoning in the psychologist’s argument is most vulnerable to criticism on the grounds that the argument
(A) presumes, without providing justification, that university students suffer from insomnia more frequently than do members of the general population
(B) presumes that all instances of insomnia have the same cause
(C) fails to provide a scientifically respectable definition for the term “napping”
(D) fails to consider the possibility that frequent daytime napping is an effect rather than a cause of insomnia
(E) presumes, without providing justification, that there is such a thing as a regular sleep pattern for someone working on a commercial fishing vessel
The reasoning in the psychologist’s argument is most vulnerable to criticism on the grounds that the argument
(A) presumes, without providing justification, that university students suffer from insomnia more frequently than do members of the general population
(B) presumes that all instances of insomnia have the same cause
(C) fails to provide a scientifically respectable definition for the term “napping”
(D) fails to consider the possibility that frequent daytime napping is an effect rather than a cause of insomnia
(E) presumes, without providing justification, that there is such a thing as a regular sleep pattern for someone working on a commercial fishing vessel
25 Sep 2021, 01:00
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Bunuel
Psychologist: A study of 436 university students found that those who took short naps throughout the day suffered from insomnia more frequently than those who did not. Moreover, people who work on commercial fishing vessels often have irregular sleep patterns that include frequent napping, and they also suffer from insomnia. So it is very likely that napping tends to cause insomnia.
The reasoning in the psychologist’s argument is most vulnerable to criticism on the grounds that the argument
(A) presumes, without providing justification, that university students suffer from insomnia more frequently than do members of the general population
(B) presumes that all instances of insomnia have the same cause
(C) fails to provide a scientifically respectable definition for the term “napping”
(D) fails to consider the possibility that frequent daytime napping is an effect rather than a cause of insomnia
(E) presumes, without providing justification, that there is such a thing as a regular sleep pattern for someone working on a commercial fishing vessel
The reasoning in the psychologist’s argument is most vulnerable to criticism on the grounds that the argument
(A) presumes, without providing justification, that university students suffer from insomnia more frequently than do members of the general population
(B) presumes that all instances of insomnia have the same cause
(C) fails to provide a scientifically respectable definition for the term “napping”
(D) fails to consider the possibility that frequent daytime napping is an effect rather than a cause of insomnia
(E) presumes, without providing justification, that there is such a thing as a regular sleep pattern for someone working on a commercial fishing vessel
EXPLANATION FROM Fox LSAT
How do you know that insomnia doesn’t cause napping?! This is a concept I teach on the very first night of every class. Any time somebody uses a correlation-therefore-causation argument, ask them if they might have the cause and effect relationship backward. This is the type of question you should be able to answer in your sleep. The argument says, “A and B are correlated, therefore A causes B.” You should always fire right back: “Hey homes, just curious, but how do you know that B didn’t cause A? In your faaaaaaaace!”
A) No, the argument simply doesn’t do this.
B) No, the argument doesn’t do this either. At a minimum, we have to pick an answer that describes something that the psychologist actually did.
C) Okay, the psychologist did fail to define this term, but one is not required to precisely define every term in one’s argument. It would be unreasonable to be required do so, as doing so would require an unreasonable measure of time and words. This is almost never the correct answer on this test.
D) Yes, exactly. The argument has ignored a possible reversal of cause and effect. Face.
E) The argument doesn’t do this.
The answer is D. On this question, you absolutely must be able to predict the correct answer before looking at the answer choices. If you can’t learn to see this flaw coming, the LSAT is never going to be easy for you. I think you can learn to see it coming. If not, get out now.
General Discussion
20 Sep 2021, 01:15
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(D) fails to consider the possibility that frequent daytime napping is an effect rather than a cause of insomnia
IMHO D should be the answer as the argument does not consider the reverse possibility.
Option (B) comes close but since it says mentions ALL, hence it is too broad and too inclusive. Even the argument states "So it is very likely that napping tends to cause insomnia."
IMHO D should be the answer as the argument does not consider the reverse possibility.
Option (B) comes close but since it says mentions ALL, hence it is too broad and too inclusive. Even the argument states "So it is very likely that napping tends to cause insomnia."
