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Martial artists are capable of tolerating higher levels of pain than a

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Martial artists are capable of tolerating higher levels of pain than a  [#permalink]

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New post 13 Oct 2019, 21:07
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Martial artists are capable of tolerating higher levels of pain than an average human being. Researchers studied the blood samples of Chung Lee – a renowned martial artist – and found more than average level of endorphins – certain biological compounds that can lower the perception of pain. Based on these findings, they concluded that the higher level of endorphins is the reason for the higher pain threshold in martial artists.

Which of the following, if true, helps assess the validity of the researchers’ conclusion?


A. Chung Lee can tolerate as much pain as every other martial artist.

B. The average of level of endorphins in people who practice martial arts is higher than the corresponding levels in other people in the world.

C. Endorphin levels are correlated with physical activity levels.

D. Endorphin levels tend to decrease with increasing sedentary lifestyle.

E. An older martial artist has lower endorphin levels than a younger one does.
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New post 21 Oct 2019, 11:36
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No other statement supports the research conclusion except option B.
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Re: Martial artists are capable of tolerating higher levels of pain than a  [#permalink]

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New post 21 Oct 2019, 16:56
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iamsiddharthkapoor wrote:
Martial artists are capable of tolerating higher levels of pain than an average human being. Researchers studied the blood samples of Chung Lee – a renowned martial artist – and found more than average level of endorphins – certain biological compounds that can lower the perception of pain. Based on these findings, they concluded that the higher level of endorphins is the reason for the higher pain threshold in martial artists.

Which of the following, if true, helps assess the validity of the researchers’ conclusion?


A. Chung Lee can tolerate as much pain as every other martial artist.

B. The average of level of endorphins in people who practice martial arts is higher than the corresponding levels in other people in the world.

C. Endorphin levels are correlated with physical activity levels.

D. Endorphin levels tend to decrease with increasing sedentary lifestyle.

E. An older martial artist has lower endorphin levels than a younger one does.



To find the correct answer, we test each option with variance test. If two opposite answers from the given option change the validity of the argument then that is our correct choice.
I'll apply this to B.
If 'yes' : The average of level of endorphins is actually higher in people who practice martial arts
Then, yes, martial artists are capable of enduring more pain.

If 'no' : The average of level of endorphins is NOT actually higher in people who practice martial arts, then the sample is not indicative and then, the conclusion is weakened.

Hence. B is our answer.

The same test applied to other options, does not change the validity of the conclusion based on change in extreme position taken by the given statement.
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Re: Martial artists are capable of tolerating higher levels of pain than a   [#permalink] 21 Oct 2019, 16:56
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