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A broad based study of elderly people who say that they have

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Manager
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A broad based study of elderly people who say that they have [#permalink] New post 07 Aug 2011, 13:16
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

71% (01:53) correct 29% (01:33) wrong based on 21 sessions
A broad based study of elderly people who say that they have never in their lives suffered from serious insomnia reveals that they usually kept to regular sleeping schedules, going to sleep at about the same time every night and rising at about the same time each morning. Young people who wish to avoid serious insomnia into old age would therefore stand a good chance of doing so if they retire at the same hour each night and rise at the same hour each morning.

A flaw in the argument above is that it
A.fails to recognize that a pattern of behavior beneficial to elderly people may not be similarly beneficial to young people
B.bases its conclusion on contradictory evidence
C.assumes that a condition which has had a certain result in the past will not have the same result in the future
D.fails to recognize that people may differ in what they consider to be "serious" insomnia
E.concludes that one condition is the cause of another when only a correlation has been established between them
[Reveal] Spoiler: OA

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Re: CR: Weaken :A broad based study [#permalink] New post 07 Aug 2011, 13:27
Alright so this one can be a little tricky due to the fact that it states that "suffered from serious insomnia reveals that they usually kept to regular sleeping schedules", the keyword here is USUALLY. This demonstrates that this "broad based study" has found a similarity between the two. However this does not necessarily mean that the Insomnia is caused by sporadic sleeping patterns. So this means that the answer is "E.concludes that one condition is the cause of another when only a correlation has been established between them"

Just remember it's not stating a scientific fact that event X caused event Y, only that the two events may be related somehow.
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Re: CR: Weaken :A broad based study [#permalink] New post 07 Aug 2011, 14:59
When two events occur at the same time. It necessarily doesn't mean that one event caused the other.
"Not having insomnia" and "sleeping regularly" events occurring at the same time doesn't mean that sleeping regularly doesn't cause insomnia. Hence the answer is "E"
Re: CR: Weaken :A broad based study   [#permalink] 07 Aug 2011, 14:59
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