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Director
Joined: 29 Jul 2006
Posts: 856

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06 Apr 2007, 11:39
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A study of adults who suffer from migraine headaches revealed that a significant proportion of the study participants suffer from a complex syndrome characterized by a set of three symptoms. Those who suffer from the syndrome experienced excessive anxiety during early childhood. As adolescents, these people began experiencing migraine headaches. As these people approached the age of 20, they also began to experience recurring bouts of depression. Since this pattern is invariant, always with excessive anxiety at its beginning, it follows that excessive anxiety in childhood is one of the causes of migraine headaches and depression in later life.
The reasoning in the argument is vulnerable to criticism on which one of the following grounds?
(A) It does not specify the proportion of those in the general population who suffer from the syndrome.
(B) It fails to rule out the possibility that all of the characteristic symptoms of the syndrome have a common cause.
(C) It makes a generalization that is inconsistent with the evidence.
(D) It fails to demonstrate that the people who participated in the study are representative of migraine sufferers.
(E) It does not establish why the study of migraine sufferers was restricted to adult participants.

Please give ur POE explanations on this one...I often get such questions wrong.
VP
Joined: 15 Jul 2004
Posts: 1445
Schools: Wharton (R2 - submitted); HBS (R2 - submitted); IIMA (admitted for 1 year PGPX)

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06 Apr 2007, 12:03
Is it C? I am not really sure though.
SVP
Joined: 08 Nov 2006
Posts: 1554
Location: Ann Arbor
Schools: Ross '10

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06 Apr 2007, 12:29
vineetgupta wrote:
A study of adults who suffer from migraine headaches revealed that a significant proportion of the study participants suffer from a complex syndrome characterized by a set of three symptoms. Those who suffer from the syndrome experienced excessive anxiety during early childhood. As adolescents, these people began experiencing migraine headaches. As these people approached the age of 20, they also began to experience recurring bouts of depression. Since this pattern is invariant, always with excessive anxiety at its beginning, it follows that excessive anxiety in childhood is one of the causes of migraine headaches and depression in later life.
The reasoning in the argument is vulnerable to criticism on which one of the following grounds?
(A) It does not specify the proportion of those in the general population who suffer from the syndrome.
(B) It fails to rule out the possibility that all of the characteristic symptoms of the syndrome have a common cause.
(C) It makes a generalization that is inconsistent with the evidence.
(D) It fails to demonstrate that the people who participated in the study are representative of migraine sufferers.
(E) It does not establish why the study of migraine sufferers was restricted to adult participants.

Please give ur POE explanations on this one...I often get such questions wrong.

vineet, if you understand the standard pattern related to this CR, it becomes very simple to resolve.

The argument says that the syndrome started with characteristic A then progressed to B and then C. The argument then says that because B and C follow A, A must be the reason for B and C. But it fails to account for the possibility that A can be caused by X thus X could be the cause for A, B and C.

Restate this criticism and you get

(B) It fails to rule out the possibility that all of the characteristic symptoms of the syndrome have a common cause.

Manager
Joined: 26 Feb 2007
Posts: 114

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06 Apr 2007, 13:10
B. is correct.
Manager
Joined: 07 Feb 2007
Posts: 212

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06 Apr 2007, 15:22

The argument says that the syndrome started with characteristic A then progressed to B and then C. The argument then says that because B and C follow A, A must be the reason for B and C. But it fails to account for the possibility that A can be caused by X thus X could be the cause for A, B and C.

Restate this criticism and you get

(B) It fails to rule out the possibility that all of the characteristic symptoms of the syndrome have a common cause.

Waht a great explain.
Manager
Joined: 20 Nov 2006
Posts: 210

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06 Apr 2007, 22:26
06 Apr 2007, 22:26
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