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Brain scans of people exposed to certain neurotoxins reveal

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Director
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Brain scans of people exposed to certain neurotoxins reveal [#permalink] New post 27 May 2005, 11:25
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A
B
C
D
E

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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 27 May 2005, 11:42
I pick C

'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.'

I don't see the correlation...
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 [#permalink] New post 27 May 2005, 11:49
agree, C
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 [#permalink] New post 28 May 2005, 05:05
DLMD wrote:
agree, C


I too vote for C

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 [#permalink] New post 28 May 2005, 20:02
C looks tempting,let's see what the OA is.
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 [#permalink] New post 29 May 2005, 11:58
One more for C.
A. nothing is mentioned about accuracy
B. Overestimation - not talked about
C. Best answer. Brain damage is identical in both cases. But declaring it as a causal effect for P's disease is plain wrong.
D. wanting to know as early as possible - out of scope
E. out of scope
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Answer [#permalink] New post 30 May 2005, 05:09
I too thought the answer was C, but the OA says B.

Wierd, huh ?
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Re: Answer [#permalink] New post 30 May 2005, 05:15
WinWinMBA wrote:
I too thought the answer was C, but the OA says B.

Wierd, huh ?


Do you any OE ?
Re: Answer   [#permalink] 30 May 2005, 05:15
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