In 1960 s studies of rats, scientists found that crowding : GMAT Critical Reasoning (CR)
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# In 1960 s studies of rats, scientists found that crowding

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In 1960 s studies of rats, scientists found that crowding [#permalink]

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28 Jan 2008, 13:52
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In 1960’s studies of rats, scientists found that crowding increases the number of attacks
among the animals significantly. But in recent experiments in which rhesus monkeys
were placed in crowded conditions, although there was an increase in instances of
“coping” behavior—such as submissive gestures and avoidance of dominant
individuals—attacks did not become any more frequent. Therefore it is not likely that,
for any species of monkey, crowding increases aggression as significantly as was seen in
rats.

Which of the following, if true, most strengthens the argument?

A. All the observed forms of coping behavior can be found among rhesus monkeys living in uncrowded conditions.

B. In the studies of rats, nondominant individuals were found to increasingly avoid dominant individuals when the animals were in crowded conditions.

C. Rhesus monkeys respond with aggression to a wider range of stimuli than any other monkeys do.

D. Some individual monkeys in the experiment were involved in significantly more attacks than the other monkeys were.

E. Some of the coping behavior displayed by rhesus monkeys is similar to behavior rhesus monkeys use to bring to an end an attack that has begun.

[Reveal] Spoiler: OA
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Re: In 1960 s studies of rats, scientists found that crowding [#permalink]

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28 Jan 2008, 23:12
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A for me
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Re: In 1960 s studies of rats, scientists found that crowding [#permalink]

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29 Jan 2008, 06:05
2
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Expert's post
C

In 1960’s studies of rats, scientists found that crowding increases the number of attacks
among the animals significantly. But in recent experiments in which rhesus monkeys
were placed in crowded conditions, although there was an increase in instances of
“coping” behavior—such as submissive gestures and avoidance of dominant
individuals—attacks did not become any more frequent. Therefore it is not likely that,
for any species of monkey, crowding increases aggression as significantly as was seen in
rats.

The assumption: Result for rhesus monkeys means the same result for any species of monkey

Which of the following, if true, most strengthens the argument?

C. Rhesus monkeys respond with aggression to a wider range of stimuli than any other monkeys do.
Only C relates Rhesus monkeys to any other monkeys
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Re: In 1960 s studies of rats, scientists found that crowding [#permalink]

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29 Jan 2008, 07:41
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walkers explanation seems correct..whats the OA?
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Re: In 1960 s studies of rats, scientists found that crowding [#permalink]

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29 Jan 2008, 08:31
Correct. OA is C.
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Re: In 1960 s studies of rats, scientists found that crowding [#permalink]

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30 Jan 2008, 23:12
Conclusion: For any species of monkey, increase in crowding wasn’t caused aggression as significantly as was seen in rats.

A. All the observed forms of coping behavior can be found among rhesus monkeys living in uncrowded conditions. [Argument deals with crowding vs. aggression behavior. - This is irrelevant to the argument.]

B. In the studies of rats, nondominant individuals were found to increasingly avoid dominant individuals when the animals were in crowded conditions. [The argument deals with any species of monkeys and with crowding vs. aggression behavior. - This is irrelevant to the argument.]

C. Rhesus monkeys respond with aggression to a wider range of stimuli than any other monkeys do. (Hold it)

D. Some individual monkeys in the experiment were involved in significantly more attacks than the other monkeys were. [This is not about individual monkeys in experiment – Eliminate it]

E. Some of the coping behavior displayed by rhesus monkeys is similar to behavior rhesus monkeys use to bring to an end an attack that has begun.[This argument is not about coping behavior displayed by rhesus monkeys – eliminate it]

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Re: In 1960 s studies of rats, scientists found that crowding [#permalink]

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16 Jun 2010, 04:10
This is was tough for me. I marked E as C makes a comparison b/w rhesus monkey with other monkeys while the argument seems not to
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Re: In 1960 s studies of rats, scientists found that crowding [#permalink]

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02 Jul 2010, 09:37
ykaiim wrote:
This is was tough for me. I marked E as C makes a comparison b/w rhesus monkey with other monkeys while the argument seems not to

Quote:
Therefore it is not likely that,
for any species of monkey, crowding increases aggression as significantly as was seen in
rats.

Read the stem carefully - it says- ANY species of monkey - this should immediately alert you that from ONE species of monkey (rhesus), the author is generalizing to ALL species of monkeys. Thus there should be something so generally true or so all-encompassing about rhesus monkey that the generalization should hold to other monkeys as well.
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Re: In 1960 s studies of rats, scientists found that crowding [#permalink]

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04 Apr 2013, 10:16
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eyunni wrote:
In 1960’s studies of rats, scientists found that crowding increases the number of attacks among the animals significantly. But in recent experiments in which rhesus monkeys were placed in crowded conditions, although there was an increase in instances of “coping” behavior—such as submissive gestures and avoidance of dominant individuals—attacks did not become any more frequent. Therefore it is not likely that, for any species of monkey, crowding increases aggression as significantly as was seen in rats.

Which of the following, if true, most strengthens the argument?
(A) All the observed forms of coping behavior can be found among rhesus monkeys living in uncrowded conditions.
(B) In the studies of rats, nondominant individuals were found to increasingly avoid dominant individuals when the animals were in crowded conditions.
(C) Rhesus monkeys respond with aggression to a wider range of stimuli than any other monkeys do.
(D) Some individual monkeys in the experiment were involved in significantly more attacks than the other monkeys were.
(E) Some of the coping behavior displayed by rhesus monkeys is similar to behavior rhesus monkeys use to bring to an end an attack that has begun.

fameatop wrote:
Hi Mike, I am not able to understand the logic presented in option (although i got the logic in Stimuli) & how come option (C) strengthens the argument? Can you kindly dispel my confusion. Waiting eagerly for your valuable inputs. Regards, Fame

First, I will say I find it a little unusual that no one seems to be able to identify the source of this question. Hmmm.

http://magoosh.com/gmat/2012/arguments- ... -the-gmat/
Obviously, in a "find the assumption question", this is relevant. One of the best ways to strengthen an argument is to verify its assumption, and one of the best ways to attack an argument is to undercut its assumption. Right there, you have the three most common GMAT CR questions, and a single skill, finding the assumption, can help with all three.

Again, here the assumption has something to do with a link between how aggressive rhesus monkeys are and how aggressive other kinds of monkeys would be.

Choice (C) goes to the heart of this --- essentially, it says rhesus monkeys are way more aggressive than other kinds of monkeys. Therefore, if the overcrowding is not enough to provoke the pugnacious rhesus monkeys to aggression, then it would not be enough to provoke any of the less aggressive monkeys either.

Choice (C) affirms the assumption of the argument, so it is an ideal strengthener, and the best answer among these five.

Does this make sense?
Mike
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Re: In 1960 s studies of rats, scientists found that crowding [#permalink]

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07 Feb 2015, 08:24
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Re: In 1960 s studies of rats, scientists found that crowding [#permalink]

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15 Mar 2016, 15:23
Hello from the GMAT Club VerbalBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: In 1960 s studies of rats, scientists found that crowding [#permalink]

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30 Jul 2016, 07:40
eyunni wrote:
In 1960’s studies of rats, scientists found that crowding increases the number of attacks
among the animals significantly. But in recent experiments in which rhesus monkeys
were placed in crowded conditions, although there was an increase in instances of
“coping” behavior—such as submissive gestures and avoidance of dominant
individuals—attacks did not become any more frequent. Therefore it is not likely that,
for any species of monkey, crowding increases aggression as significantly as was seen in
rats.

Which of the following, if true, most strengthens the argument?

A. All the observed forms of coping behavior can be found among rhesus monkeys living in uncrowded conditions.

B. In the studies of rats, nondominant individuals were found to increasingly avoid dominant individuals when the animals were in crowded conditions.

C. Rhesus monkeys respond with aggression to a wider range of stimuli than any other monkeys do.

D. Some individual monkeys in the experiment were involved in significantly more attacks than the other monkeys were.

E. Some of the coping behavior displayed by rhesus monkeys is similar to behavior rhesus monkeys use to bring to an end an attack that has begun.

Amongst all types of monkeys rhesus monkey respond aggressively to a wide range of things. Now it means they get angry often and get angry on a lots of things. They are the angriest of all monkeys. Now if the angriest of all (these rhesus) did not responded aggressively to crowding, the other varieties of monkeys which are comparatively more milder and gentler then rhesus will not also respond to the crowding.

An analogy will be IF a gladiator someone can fight with a ferocious tiger without any fear then it is logical to think that he would NOT be afraid to fight with a goat. Similarly if over crowding is not making rhesus (who gets violent easily) aggressive, then other monkeys might not get aggressive either .
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Re: In 1960 s studies of rats, scientists found that crowding   [#permalink] 30 Jul 2016, 07:40
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