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Brain scans of people exposed to certain neurotoxins reveal [#permalink]
27 May 2005, 11:25
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9. 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.
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
I'm crossing the bridge.........