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Studies show that an individual suffering from insomnia

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Studies show that an individual suffering from insomnia [#permalink]

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New post 08 Jun 2018, 12:31
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Question Stats:

47% (01:29) correct 53% (00:54) wrong based on 66 sessions

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Studies show that an individual suffering from insomnia is more likely to be a smoker than is a non-insomniac. Clearly, lack of sleep induces insomniacs to smoke.
Which of the following, if true, most weakens the argument?

A) Nicotine is known to have relaxing properties.
B) Little is known about the causes of insomnia.
C) Most insomniacs report developing a smoking addiction after having developed sleep problems.
D) Many of the smoking's physical effects, such as irritability and anxiety, are associated with insomnia.
E) Many insomniacs whose sleep patterns return to normal report quitting smoking.

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Re: Studies show that an individual suffering from insomnia [#permalink]

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New post 08 Jun 2018, 14:17
itisSheldon wrote:
Studies show that an individual suffering from insomnia is more likely to be a smoker than is a non-insomniac. Clearly, lack of sleep induces insomniacs to smoke.
Which of the following, if true, most weakens the argument?

A) Nicotine is known to have relaxing properties.
B) Little is known about the causes of insomnia.
C) Most insomniacs report developing a smoking addiction after having developed sleep problems.
D) Many of the smoking's physical effects, such as irritability and anxiety, are associated with insomnia.
E) Many insomniacs whose sleep patterns return to normal report quitting smoking.


The argument talks about studies conducted that show that an individual suffering from insomnia
is more likely to take to smoking. The lack of sleep could be the reason why the individual smokes.

Option D(Many of the smoking's physical effects, such as irritability and anxiety, are associated with
insomnia)
weakens the argument. It says that some of the effects associated with smoking are also
associated with insomnia.
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Re: Studies show that an individual suffering from insomnia [#permalink]

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New post 08 Jun 2018, 16:00
itisSheldon wrote:
Studies show that an individual suffering from insomnia is more likely to be a smoker than is a non-insomniac. Clearly, lack of sleep induces insomniacs to smoke.
Which of the following, if true, most weakens the argument?

A) Nicotine is known to have relaxing properties.
B) Little is known about the causes of insomnia.
C) Most insomniacs report developing a smoking addiction after having developed sleep problems.
D) Many of the smoking's physical effects, such as irritability and anxiety, are associated with insomnia.
E) Many insomniacs whose sleep patterns return to normal report quitting smoking.



The study shows that an insomnia is more likely to be a smoker. Here the conclusion is derived from a causation which is not clearly stated.
It may happen that the reverse is also true i.e. smoking causes insomnia. In this reverse causation case, the conclusion won't stand right.

So D is the best answer.
Re: Studies show that an individual suffering from insomnia   [#permalink] 08 Jun 2018, 16:00
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Studies show that an individual suffering from insomnia

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