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Brain scans of people exposed to certain neurotoxins reveal

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Senior Manager
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Brain scans of people exposed to certain neurotoxins reveal [#permalink] New post 24 Nov 2006, 11:46
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9. Brain scans of people exposed to certain neurotoxins reveal brain damage identical to that found in people suffering from Parkinson’s disease. This fact shows not only that these neurotoxins cause this type of brain damage, but also that the brain damage itself causes Parkinson’s disease. Thus brain scans can be used to determine who is likely to develop Parkinson’s disease.
The argument contains which one of the following reasoning errors?
(A) It fails to establish that other methods that can be used to diagnose Parkinson’s disease are less accurate than brain scans.
(B) It overestimates the importance of early diagnosis in determining appropriate treatments for people suffering from Parkinson’s disease.
(C) It mistakes a correlation between the type of brain damage described and Parkinson’s disease for a causal relation between the two.
(D) It assumes that people would want to know as early as possible whether they were likely to develop Parkinson’s disease.
(E) It neglects to specify how the information provided by brain scans could be used either in treating Parkinson’s disease or in monitoring the progression of the disease.
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 [#permalink] New post 24 Nov 2006, 12:37
C..
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 [#permalink] New post 24 Nov 2006, 13:44
Agree with C.

Just because the damage is identical does not mean that same type of damage caused Parkinson's in a person
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 [#permalink] New post 25 Nov 2006, 00:05
C 2
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 [#permalink] New post 25 Nov 2006, 16:33
C by POE
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 [#permalink] New post 25 Nov 2006, 23:16
OA=B
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 [#permalink] New post 03 Dec 2006, 16:37
Just saw this. Can someone explain why the answer is B, please? I still think B is wrong.
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 [#permalink] New post 03 Dec 2006, 20:46
Agree with C.

B is going beyond what is stated in the argument.
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 [#permalink] New post 15 Dec 2006, 16:49
bumping again. Anyone, why is the answer B? HongHu, would you like to answer this? would love your inputs.
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 [#permalink] New post 15 Dec 2006, 17:47
I feel C too..

Argument nowhere talks of treatment, which B is mentioning.. It seems to go beyond the scope too when talks of determining treatment..

Argument is simply if you can predict parkinson or not..

My worry is once you know OA, you can possibly create "some" reasoning to validate B.. something like "lie repeated many times becomes truth"..

May be given OA is wrong.. but at the sametime, I have been wrong too.. :(
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 [#permalink] New post 16 Dec 2006, 19:22
I too agree with you all and disagree with the OA. The passage didn't talk about the importance of early diagnosis with respect to the appropriate treatment at all.
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  [#permalink] 16 Dec 2006, 19:22
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