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A study of adults who suffer from migraine headaches [#permalink]
05 Aug 2004, 00:07
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23. 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 .hat excessive anxiety in childhood is one of the causes of migraine headaches and depression in later life.
The reasoning m 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.
(8) It fails to rule out the possibility that ail 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.