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Scientists attempting to replicate certain controversial results

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Scientists attempting to replicate certain controversial results  [#permalink]

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New post 04 Oct 2017, 03:03
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Scientists attempting to replicate certain controversial results reported by a group of experienced researchers failed to get the same results as those reported. The conclusion drawn from this by the scientists who conducted the replication experiments was that the originally reported results had been due to faulty measurements.

The argument of the scientists who conducted the replication experiments assumes that

(A) the original experiments had not been described in sufficient detail to make an exact replication possible
(B) the fact that the originally reported results aroused controversy made it highly likely that they were in error
(C) the theoretical principles called into question by the originally reported results were themselves based on weak evidence
(D) the replication experiments were not so likely as the original experiments to be marred by faulty measurements
(E) the researchers who originally reported the controversial results had themselves observed those results only once

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Re: Scientists attempting to replicate certain controversial results  [#permalink]

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New post 05 Oct 2017, 02:14
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Answer D
The Conclusion of the argument
scientists who conducted the replication
experiments was that the originally reported results had been due to faulty measurements.
Negation of Option D
the replication experiments were likely as the original experiments to be marred by faulty measurements.
If the replication experiments were marred by faulty measurements then the conclusion falls apart.
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Re: Scientists attempting to replicate certain controversial results  [#permalink]

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New post 04 Oct 2017, 06:04
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D, conclusion can be true only if the replication experiments are assumed to be not effected by faulty measurements
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Re: Scientists attempting to replicate certain controversial results  [#permalink]

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New post 19 Jul 2019, 17:16
(A) the original experiments had not been described in sufficient detail to make an exact replication possible
We aren't concerned with how the original experiments had been described, just the conclusion and how it was reached.

(B) the fact that the originally reported results aroused controversy made it highly likely that they were in error
This doesn't explain why the measurements in the original experiment would have been wrong.

(C) the theoretical principles called into question by the originally reported results were themselves based on weak evidence
If they were originally based on weak evidence, this would undermine the replication.

(D) the replication experiments were not so likely as the original experiments to be marred by faulty measurements
Bingo! This explains why the scientists attempting to replicate the results are so sure that there couldn't have been an error on their end.

(E) the researchers who originally reported the controversial results had themselves observed those results only once
It's not important to us how many times those results have been observed.

The correct answer choice is D.


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Re: Scientists attempting to replicate certain controversial results   [#permalink] 19 Jul 2019, 17:16
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