Brain scans of people exposed to certain neurotoxins reveal : GMAT Critical Reasoning (CR)
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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]

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13 Mar 2007, 10:05
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Brain scans of people exposed to certain neurotoxins reveal brain damage identical to that found in people suffering from Parkinsonâ€™s disease. This fact shows not only that these neurotoxins cause this type of brain damage, but also that the brain damage itself causes Parkinsonâ€™s disease. Thus brain scans can be used to determine who is likely to develop Parkinsonâ€™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 Parkinsonâ€™s disease are less accurate than brain scans.
(B) It overestimates the importance of early diagnosis in determining appropriate treatments for people suffering from Parkinsonâ€™s disease.
(C) It mistakes a correlation between the type of brain damage described and Parkinsonâ€™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 Parkinsonâ€™s disease.
(E) It neglects to specify how the information provided by brain scans could be used either in treating Parkinsonâ€™s disease or in monitoring the progression of the disease.

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Senior Manager
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13 Mar 2007, 10:38
I think C is the best Answer
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13 Mar 2007, 11:00
Seems (C) is right to me.
VP
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13 Mar 2007, 19:04
easy C , the other choices practically eliminated themselves
Director
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14 Mar 2007, 03:48
Seems "correlation and causality" is an area that is tested often..
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14 Mar 2007, 05:13
Clear C.

Faulty cause effect correlation.
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15 Mar 2007, 10:29
C is the most appropriate choice.
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15 Mar 2007, 10:42
I too go with C

The passage assumes that brain damages are the sole cause of parkinson's disease..
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15 Mar 2007, 12:49
C for me too. I feel smarter because everyone went for C.
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15 Mar 2007, 14:43
C.
15 Mar 2007, 14:43
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