PT 30 Sect 4 #22

xqhp82
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PT 30 Sect 4 #22

Postby xqhp82 » Tue Aug 24, 2010 6:39 am

I have trouble seeing why D is the correct answer for this question....is the answer assuming that since there are two groups of subjects being tested in different ways (one with alcohol, one with non-alcohol) that means the type of food being taken must be a factor for body fat gain? but couldn't this be just an assumption that may be wrong?

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Atlas LSAT Teacher
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Re: PT 30 Sect 4 #22

Postby Atlas LSAT Teacher » Tue Aug 24, 2010 10:39 am

I get asked about this one a lot.

The facts are that there were two groups. Group A added 25% more calories in the form of alcohol, while Group B kept their caloric intake the same, but replaced 25% of their intake from something like bread with alcohol. Surprisingly (at least to me), both groups gained weight - and the same amount. (Wouldn't you expect group A to gain more - remember the beer gut you grew in college?)

We're looking for something that is most strongly supported. (D) is strongly supported since the weight that the people gained doesn't seem to be about the calories consumed, since if it did, Group A would surely have gained more weight than Group B, since Group A increased their overall intake. It might be, as you suggest, that it's because of the type of food that affects weight gain instead of the number of calories, but (D) sidesteps this issue by simply saying that the fat gain is "not dependent solely..." It doesn't commit to stating what the weight gain does depend on.

(A) is out of scope - we don't know the implications of a faster metabolization.
(B) is too broad - the primary cause?
(C) discusses the link between fat and weight, which is not at issue here.
(E) is very tempting, however it's actually contradicted by the facts. Group A, who added on alcohol calories, only added 20% to their diet (think about it, if someone eats 4000 calories per day and adds 25% more in the form of alcohol, he's adding 1000, which is 20% of the new total of 5000). Group B, had a higher proportion in alcohol calories (25% pure and simple) and it was not more significant, since that group gained the same amount of weight as Group A.

Does that clear it up?

xqhp82
Posts: 311
Joined: Wed Aug 19, 2009 12:37 pm

Re: PT 30 Sect 4 #22

Postby xqhp82 » Tue Aug 24, 2010 11:20 am

thanks very much - i actually misinterpreted the stimulus, i read it as both groups increasing their calorie intake by 25% but one with pure alcohol and one with food. my bad :oops: now it all makes sense

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Atlas LSAT Teacher
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Re: PT 30 Sect 4 #22

Postby Atlas LSAT Teacher » Tue Aug 24, 2010 12:13 pm

xqhp82 wrote:thanks very much - i actually misinterpreted the stimulus, i read it as both groups increasing their calorie intake by 25% but one with pure alcohol and one with food. my bad :oops: now it all makes sense

It could be all the alcohol...

:lol:




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