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# A team of researchers from MIT studied the effects of

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Re: A team of researchers from the Massa­chusetts Institute of Technology  [#permalink]

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14 Aug 2018, 20:44
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Can you please walk us through all the options? I'm not entirely convinced how A weakens. I chose B.
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Re: A team of researchers from the Massa­chusetts Institute of Technology  [#permalink]

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15 Aug 2018, 00:04
sandman13 wrote:
Can you please walk us through all the options? I'm not entirely convinced how A weakens. I chose B.

I am no expert of CR, but let me attempt to explain this one.

A study was conducted, in which a batch of 40 mice was divided into yoghurt eating group and a control group(no yoghurt eating). Yoghurt eating participants fared better than their counterparts. Conclusion drawn : yoghurt (probiotics) is the cause for healthier and leaner mice(effect). Assumption : No other factor triggering the effect.

To weaken this assumption, we would bring in a factor that effectively explains the result of the study. Choice A says many mice from the control group died. If 50% of mice showed the sexual machismo, it would mean 5/10 mice from yoghurt eating group fared well. Whereas if say 2 mice died in the control group, out of 8 mice, 50% showed sexual machismo, it would still bring in a result of 4/10. Despite the same ratio of 50%, Yoghurt eating batch gives a better result. Hence A weakens.

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Re: A team of researchers from the Massa­chusetts Institute of Technology  [#permalink]

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03 Sep 2018, 05:23
1
Don't agree with the OA, which is stated as A. The statement strengthens and not weakens the conclusion. C is closest to a statement that weakens it.

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Re: A team of researchers from the Massa­chusetts Institute of Technology  [#permalink]

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03 Sep 2018, 10:55
2
Quote:
A team of researchers from the Massa­chusetts Institute of Technology studied the effects of yogurt on mating. The researchers took a group of 40 male mice and 40 female mice and either fed the animals a high-fat, low-fiber, low-nutrient diet meant to mimic junk food or fed them standard mouse meals. They then supple­mented half of each diet group with vanilla-flavored yogurt.In mating experiments, yogurt-eating males inseminated their partners faster and produced more offspring than control mice. Conversely, females that ate the yogurt diets gave birth to larger litters and weaned those pups with greater success. The researchers concluded that the probiotic microbes in the yogurt help to make the animals leaner and healthier, which indirectly improves sexual machismo.

Which of the following if true, would most weaken the conclusion reached by the researchers?

A. Many of the mice in the control group died soon after the experiment.

B. In another study, probiotic microbes were not found to produce any significant health benefits.

C. Yogurt is not the only food which contains a high concentration of probiotic microbes.

D. Mating advantage of the yogurt eating mice reduced in a few days after they stopped taking yogurt.

E. The female yogurt eating mice were healthier than their male counterparts.

Let me try
shelleyjohnsam
CONCLUSION: the probiotic microbes in the yogurt help to make the animals leaner and healthier, which indirectly improves sexual machismo.

We need to weaken the above conclusion .

Quote:
A. Many of the mice in the control group died soon after the experiment.

If many of the mice in the control group died after the experiment means how can we know that the probotic mcrobes in the yogurt help make the animals leaner and healthier, and how can we know that it improves sexual machismo without observing it for a while. so if they are dead the conclusion is weakened.keep it.
Quote:
B. In another study, probiotic microbes were not found to produce any significant health benefits.

we need to find the reasons to weaken it not to contradict the argument and we are talking about this study not other studies and its more like an evidence rather than a weakener.eliminate it.
Quote:
C. Yogurt is not the only food which contains a high concentration of probiotic microbes.

Irrelevant and not mentioned in the passage. eliminate it .
Quote:
D. Mating advantage of the yogurt eating mice reduced in a few days after they stopped taking yogurt.

strengthener. eliminate it
Quote:
E. The female yogurt eating mice were healthier than their male counterparts.

Irrelevant.eliminate it.

If are a conservative then you can eliminate 3 at first and then you can choose between the last two( A and B).
A is the winner here.

Thank you.
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A team of researchers from MIT studied the effects of  [#permalink]

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06 Dec 2018, 06:26

The mice that were fed yogurt were leaner and healthier than the control mice after the experiment. It is a relative thing. As mentioned in choice A if many mice in the control group died soon after the experiment then it is very likely that the meal provided to the control mice had a negative effect on them. So the result of the experiment could be construed like this: negative effect of the meal fed to the control mice made it look like yogurt having a positive effect on the experimental group.
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Re: A team of researchers from MIT studied the effects of  [#permalink]

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06 Dec 2018, 17:17
Here's my thought:

To me A is correct for this reason:

The conclusion is: The researchers concluded that the probiotic microbes in the yogurt help to make the animals leaner and healthier, which indirectly improves sexual machismo.

If you focus on the bold part, we should find something that prove yogurt does not indirectly help "sexual machismo".

If many mices in the control group (the group that was not fed on yogurt) died, that means mices that have been fed on yogurt, male and female, have no choice but only to have sex with each other -> which means the yogurt diet didn't help mices become more sexually active -> weaken
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Re: A team of researchers from MIT studied the effects of  [#permalink]

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07 Dec 2018, 06:47
A team of researchers from the Massa­chusetts Institute of Technology studied the effects of yogurt on mating. The researchers took a group of 40 male mice and 40 female mice and either fed the animals a high-fat, low-fiber, low-nutrient diet meant to mimic junk food or fed them standard mouse meals. They then supple­mented half of each diet group with vanilla-flavored yogurt.In mating experiments, yogurt-eating males inseminated their partners faster and produced more offspring than control mice. Conversely, females that ate the yogurt diets gave birth to larger litters and weaned those pups with greater success. The researchers concluded that the probiotic microbes in the yogurt help to make the animals leaner and healthier, which indirectly improves sexual machismo.

Which of the following if true, would most weaken the conclusion reached by the researchers?

understanding the argument :
-group A was fed junk food
-group B was fed mouse meal
-half of A was given yogurt and half was not
-half of B was given yogurt and half was not
result : mice with yogurt faster sex than mice without yogurt

conclusion : pro biotic in yogurt >> lean body and healthy>> increases sex drive

NOTE: this is a TYPICAL GMAT comparison study question. Most of the time when we have to weaken the conlusion try to attack the control group because that is the least explicitly mentioned and that is where the argument tries to exploit.
Apply 2 part analysis : whenever we are explicitly provided with results of one group , attack the non explicit group.

Think: we are told that HALF of both A and B were given yogurt and the half were sex crazy. What are we comparing these groups to?? the non yogurt groups ... if the non yogurt group due to some reason (we dont care about the reason...they may as well be inherently weak) was weak and had low sex drive then comapratively the yogurt mice will be better right?? in this case with or without the yogurt the half group(not the control group) will still be more sex crazy..can we conclude that yogurt had some magic?? NOPE

This was my thinking...

A. Many of the mice in the control group died soon after the experiment.
- SravnaTestPrep The answer choice could be a little more clear and not confusing. I am not saying that this choice is wrong 100% but it could be worded better and more in line with the student's reasoning. This choice is very ambiguous
reasons:
-many does not mean 50% it could 10% too
- othersin the control group may still be healthy and hence lending strength to the onclusion by making comaprisn valid
- I agree that we do not have to destroy the conclusion outright but still there should atleast be some strong point.
"many "is more like "Some" , it could be "some" (in which case i wouldnt choose this answer)
- if the asn choice used "most" or "more than half" then this choice would be a more appealing choice
-if we try to be conservative and firm on our belief(which students often tend to be) ,they might make a point for options B and C becasue both of these options are close enough to A.
-each of the three choice A B and C have their own assumptions and each can be valid answer IF tried to prove as even some of the great experts seem to second this view

P.S. plesae do not get offended .I am not being condescending. Just a student trying to make a suggestion to an expert. Please do share your views on this. Thankyou
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Re: A team of researchers from MIT studied the effects of  [#permalink]

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10 Dec 2018, 15:19
A team of researchers from the Massa­chusetts Institute of Technology studied the effects of yogurt on mating. The researchers took a group of 40 male mice and 40 female mice and either fed the animals a high-fat, low-fiber, low-nutrient diet meant to mimic junk food or fed them standard mouse meals. They then supple­mented half of each diet group with vanilla-flavored yogurt.In mating experiments, yogurt-eating males inseminated their partners faster and produced more offspring than control mice. Conversely, females that ate the yogurt diets gave birth to larger litters and weaned those pups with greater success. The researchers concluded that the probiotic microbes in the yogurt help to make the animals leaner and healthier, which indirectly improves sexual machismo.

Which of the following if true, would most weaken the conclusion reached by the researchers?

understanding the argument :
-group A was fed junk food
-group B was fed mouse meal
-half of A was given yogurt and half was not
-half of B was given yogurt and half was not
result : mice with yogurt faster sex than mice without yogurt

conclusion : pro biotic in yogurt >> lean body and healthy>> increases sex drive

NOTE: this is a TYPICAL GMAT comparison study question. Most of the time when we have to weaken the conlusion try to attack the control group because that is the least explicitly mentioned and that is where the argument tries to exploit.
Apply 2 part analysis : whenever we are explicitly provided with results of one group , attack the non explicit group.

Think: we are told that HALF of both A and B were given yogurt and the half were sex crazy. What are we comparing these groups to?? the non yogurt groups ... if the non yogurt group due to some reason (we dont care about the reason...they may as well be inherently weak) was weak and had low sex drive then comapratively the yogurt mice will be better right?? in this case with or without the yogurt the half group(not the control group) will still be more sex crazy..can we conclude that yogurt had some magic?? NOPE

This was my thinking...

A. Many of the mice in the control group died soon after the experiment.
- SravnaTestPrep The answer choice could be a little more clear and not confusing. I am not saying that this choice is wrong 100% but it could be worded better and more in line with the student's reasoning. This choice is very ambiguous
reasons:
-many does not mean 50% it could 10% too
- othersin the control group may still be healthy and hence lending strength to the onclusion by making comaprisn valid
- I agree that we do not have to destroy the conclusion outright but still there should atleast be some strong point.
"many "is more like "Some" , it could be "some" (in which case i wouldnt choose this answer)
- if the asn choice used "most" or "more than half" then this choice would be a more appealing choice
-if we try to be conservative and firm on our belief(which students often tend to be) ,they might make a point for options B and C becasue both of these options are close enough to A.
-each of the three choice A B and C have their own assumptions and each can be valid answer IF tried to prove as even some of the great experts seem to second this view

P.S. plesae do not get offended .I am not being condescending. Just a student trying to make a suggestion to an expert. Please do share your views on this. Thankyou

Sorry for the delayed response. I agree that the choices could have been better worded.

I still think that A is a better choice than B or C. B and C do not strongly weaken the argument as A does. If you can say your reasoning for B and C , I would be happy to respond.

Regards
_________________

Srinivasan Vaidyaraman
Sravna Holistic Solutions
http://www.sravnatestprep.com

Holistic and Systematic Approach

Director
Joined: 17 Dec 2012
Posts: 624
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Re: A team of researchers from MIT studied the effects of  [#permalink]

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10 Dec 2018, 15:20
SravnaTestPrep wrote:
A team of researchers from the Massa­chusetts Institute of Technology studied the effects of yogurt on mating. The researchers took a group of 40 male mice and 40 female mice and either fed the animals a high-fat, low-fiber, low-nutrient diet meant to mimic junk food or fed them standard mouse meals. They then supple­mented half of each diet group with vanilla-flavored yogurt.In mating experiments, yogurt-eating males inseminated their partners faster and produced more offspring than control mice. Conversely, females that ate the yogurt diets gave birth to larger litters and weaned those pups with greater success. The researchers concluded that the probiotic microbes in the yogurt help to make the animals leaner and healthier, which indirectly improves sexual machismo.

Which of the following if true, would most weaken the conclusion reached by the researchers?

understanding the argument :
-group A was fed junk food
-group B was fed mouse meal
-half of A was given yogurt and half was not
-half of B was given yogurt and half was not
result : mice with yogurt faster sex than mice without yogurt

conclusion : pro biotic in yogurt >> lean body and healthy>> increases sex drive

NOTE: this is a TYPICAL GMAT comparison study question. Most of the time when we have to weaken the conlusion try to attack the control group because that is the least explicitly mentioned and that is where the argument tries to exploit.
Apply 2 part analysis : whenever we are explicitly provided with results of one group , attack the non explicit group.

Think: we are told that HALF of both A and B were given yogurt and the half were sex crazy. What are we comparing these groups to?? the non yogurt groups ... if the non yogurt group due to some reason (we dont care about the reason...they may as well be inherently weak) was weak and had low sex drive then comapratively the yogurt mice will be better right?? in this case with or without the yogurt the half group(not the control group) will still be more sex crazy..can we conclude that yogurt had some magic?? NOPE

This was my thinking...

A. Many of the mice in the control group died soon after the experiment.
- SravnaTestPrep The answer choice could be a little more clear and not confusing. I am not saying that this choice is wrong 100% but it could be worded better and more in line with the student's reasoning. This choice is very ambiguous
reasons:
-many does not mean 50% it could 10% too
- othersin the control group may still be healthy and hence lending strength to the onclusion by making comaprisn valid
- I agree that we do not have to destroy the conclusion outright but still there should atleast be some strong point.
"many "is more like "Some" , it could be "some" (in which case i wouldnt choose this answer)
- if the asn choice used "most" or "more than half" then this choice would be a more appealing choice
-if we try to be conservative and firm on our belief(which students often tend to be) ,they might make a point for options B and C becasue both of these options are close enough to A.
-each of the three choice A B and C have their own assumptions and each can be valid answer IF tried to prove as even some of the great experts seem to second this view

P.S. plesae do not get offended .I am not being condescending. Just a student trying to make a suggestion to an expert. Please do share your views on this. Thankyou

Sorry for the delayed response. I agree that the choices could have been better worded.

I still think that A is a better choice than B or C. B and C do not as strongly weaken the argument as A does. If you can say your reasoning for B and C , I would be happy to respond.

Regards
_________________

Srinivasan Vaidyaraman
Sravna Holistic Solutions
http://www.sravnatestprep.com

Holistic and Systematic Approach

Re: A team of researchers from MIT studied the effects of   [#permalink] 10 Dec 2018, 15:20

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