One often hears that beer, because of its particular mixture of sugars : GMAT Critical Reasoning (CR)
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One often hears that beer, because of its particular mixture of sugars

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One often hears that beer, because of its particular mixture of sugars [#permalink]

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14 Jun 2015, 06:05
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One often hears that beer, because of its particular mixture of sugars and carbohydrates, is good for one's hair. A group of dermatologists decided to examine the validity of this theory by comparing the hair of a group of people who washed their hair with beer to the hair of a group who used regular shampoo. The researchers found that, in fact, beer contains more chemicals that revitalize hair than does regular shampoo; however, there was a greater incidence of split ends and hair loss in the group that washed their hair with beer.

Which of the following, if true, best explains the results obtained by the dermatologists?

B. Even if one washes one's hair with beer it is important to use conditioner.

C. The group of people in the study who washed their hair with beer were more prone to hair problems to begin with.

D. The study was conducted in rugged coastal areas, where there is heavy wind and salty air.

E. Chemicals that revitalize hair can damage hair if used in excessive amounts.

OA later
[Reveal] Spoiler: OA

Last edited by applebus on 14 Jun 2015, 20:37, edited 1 time in total.
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Re: One often hears that beer, because of its particular mixture of sugars [#permalink]

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14 Jun 2015, 09:56
IMO E ... pretty straight forward. Please provide OA.
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Re: One often hears that beer, because of its particular mixture of sugars [#permalink]

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15 Jun 2015, 06:21
Why not E,

Argument says, Beer contains good chemical but in excess quantity. Pre-thinking -> Excess quantity can be harmful Option E matches prethinking .

Can anyone explain Why E is incorrect.

Experts can anyone please explain. Why C is better than E, and what should one do in this situation.

egmat,
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Re: One often hears that beer, because of its particular mixture of sugars [#permalink]

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15 Jun 2015, 18:19
Can someone pls explain why A is not correct.
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Re: One often hears that beer, because of its particular mixture of sugars [#permalink]

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15 Jun 2015, 18:43
sisorayi01 wrote:
Can someone pls explain why A is not correct.

Where in the argument author said that "Alcohol is bad for scalp", it is outside knowledge which attract us toward this option.

This is one of the perfect example, how GMAT introduce out of scope option.
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Re: One often hears that beer, because of its particular mixture of sugars [#permalink]

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15 Jun 2015, 19:47
vishwaprakash wrote:
Why not E,

Argument says, Beer contains good chemical but in excess quantity. Pre-thinking -> Excess quantity can be harmful Option E matches prethinking .

Can anyone explain Why E is incorrect.

Experts can anyone please explain. Why C is better than E, and what should one do in this situation.

egmat,

Researchers findings:

1) Beer Revitalizes hair better than regular shampoo.
2) Sample group of people who used beer to wash their hairs lost more hairs than sample group of people who used regular shampoo.

Satement 1 and Staement 2 show a paradox.
Here, both statements are "TRUE".

Statement E is wrong because it uses an EXTREME WORD "excessive amounts". Nothing about over usage of beer or regular shampoo is mentioned in the passage. Though, it might be true in the actual world that excess ussage of anything is harmful but we have to restrict ourselves to the content of the passage.

Statement E is correct because it resolves the paradox.
If people who used beer already suffered from major hair problems before they took part in the analysis then it is possible that beer might not have produced a significant revitalization of their hair.

This statement provides another cause of the hair loss while holding both observations by the researchers to be TRUE.

Hope this helps
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Re: One often hears that beer, because of its particular mixture of sugars [#permalink]

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17 Jun 2015, 06:31
Paradox: Statement 1:The researchers found that, in fact, beer contains more chemicals that revitalize hair than does regular shampoo
Statement 2:however, there was a greater incidence of split ends and hair loss in the group that washed their hair with beer.(conclusion)

We have to find new info in which Statement 2 is true even though Statement 1 is valid
Pre think-There may be a situation in which the group which washed their hair with beer had problems already to begin with hence use of beer had no significant effect on them.In this way both the paradox statements balance out each other.

A- Alcohol can be very bad for your Scalp-No where it has been mentioned in the passage about alcohol content hence out of scope
B- Even if one washes one's hair with beer it is important to use conditioner-usage of air conditioner is irrelevant to the passage
C-The group of people in the study who washed their hair with beer were more prone to hair problems to begin with-Similar to pre think step hence correct
D-The study was conducted in rugged coastal areas, where there is heavy wind and salty air-Place of study does not help to resolve the paradox as heavy wind or salty hair would have similar effects on both the study groups.
E-Using excessive amounts of which brand has not been mentioned hence incorrect.
Re: One often hears that beer, because of its particular mixture of sugars   [#permalink] 17 Jun 2015, 06:31
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