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# Doctor: Research shows that adolescents who listen to music on headpho

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19 Mar 2017, 14:30
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55% (hard)

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54% (01:18) correct 46% (01:39) wrong based on 614 sessions

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Doctor: Research shows that adolescents who listen to music on headphones on a regular basis are three times as likely to develop serious hearing loss as are adolescents who do not use headphones. Federal legislation that prohibits the sale of headphones to minors would help to reduce the prevalence of hearing loss among adolescents.

In assessing the doctor’s assertion, it would be most useful to know which of the following?

a. percentage of federal legislators who would vote for a bill that prohibits the sale of headphones to minors.

b. The number of adolescents who use headphones on a regular basis but do not suffer from hearing loss.

c. The extent to which other common adolescent behaviors contribute to hearing loss.

d. The percentage of parents who would refuse to purchase headphones for their adolescent children.

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20 Mar 2017, 01:28
1
quantumliner wrote:
Doctor: Research shows that adolescents who listen to music on headphones on a regular basis are three times as likely to develop serious hearing loss as are adolescents who do not use headphones. Federal legislation that prohibits the sale of headphones to minors would help to reduce the prevalence of hearing loss among adolescents.

In assessing the doctor’s assertion, it would be most useful to know which of the following?

a. percentage of federal legislators who would vote for a bill that prohibits the sale of headphones to minors.

b. The number of adolescents who use headphones on a regular basis but do not suffer from hearing loss.

c. The extent to which other common adolescent behaviors contribute to hearing loss.

d. The percentage of parents who would refuse to purchase headphones for their adolescent children.

It is build on same logic as a official question about videogames.
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20 Mar 2017, 02:43
anje29 wrote:
quantumliner wrote:
Doctor: Research shows that adolescents who listen to music on headphones on a regular basis are three times as likely to develop serious hearing loss as are adolescents who do not use headphones. Federal legislation that prohibits the sale of headphones to minors would help to reduce the prevalence of hearing loss among adolescents.

In assessing the doctor’s assertion, it would be most useful to know which of the following?

a. percentage of federal legislators who would vote for a bill that prohibits the sale of headphones to minors.

b. The number of adolescents who use headphones on a regular basis but do not suffer from hearing loss.

c. The extent to which other common adolescent behaviors contribute to hearing loss.

d. The percentage of parents who would refuse to purchase headphones for their adolescent children.

It is build on same logic as a official question about videogames.

QA - E
It seems most appropriate option among all after using extremity test

Sent from my A0001 using GMAT Club Forum mobile app
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20 Mar 2017, 02:57
1
1
arjittak wrote:
anje29 wrote:
quantumliner wrote:
Doctor: Research shows that adolescents who listen to music on headphones on a regular basis are three times as likely to develop serious hearing loss as are adolescents who do not use headphones. Federal legislation that prohibits the sale of headphones to minors would help to reduce the prevalence of hearing loss among adolescents.

In assessing the doctor’s assertion, it would be most useful to know which of the following?

a. percentage of federal legislators who would vote for a bill that prohibits the sale of headphones to minors.

b. The number of adolescents who use headphones on a regular basis but do not suffer from hearing loss.

c. The extent to which other common adolescent behaviors contribute to hearing loss.

d. The percentage of parents who would refuse to purchase headphones for their adolescent children.

It is build on same logic as a official question about videogames.

QA - E
It seems most appropriate option among all after using extremity test

Sent from my A0001 using GMAT Club Forum mobile app

Option E is out of scope.
Here the conclusion is 'Federal legislation that prohibits the sale of headphones to minors would help to reduce the prevalence of hearing loss among adolescents. '

Question asked which of the following will help to assess the doctor's assertion ( conclusion) , option D is useful in assessing that doctor's conclusion. The success of author's assertion that federal legislation will reduce the prevalence of hearing loss among adolescents will depend on how many parents will buy headphones for their minors . For example if parents will not deny the headphones to minors then federal legislation prohibition of sale of headphones to minors will not make difference in the current situation.
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26 May 2017, 15:15
I almost fell for B, but then - i re-read the argument - "prohibits the sale of headphones to minors" - it is obviously D.
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25 Jul 2018, 05:32
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1
quantumliner wrote:
Doctor: Research shows that adolescents who listen to music on headphones on a regular basis are three times as likely to develop serious hearing loss as are adolescents who do not use headphones. Federal legislation that prohibits the sale of headphones to minors would help to reduce the prevalence of hearing loss among adolescents.

In assessing the doctor’s assertion, it would be most useful to know which of the following?

a. percentage of federal legislators who would vote for a bill that prohibits the sale of headphones to minors.

b. The number of adolescents who use headphones on a regular basis but do not suffer from hearing loss.

c. The extent to which other common adolescent behaviors contribute to hearing loss.

d. The percentage of parents who would refuse to purchase headphones for their adolescent children.

Responding to a pm:

Adolescents who use headphones regularly are 3 times as likely to develop hearing loss as those who do not.

Conclusion:Federal legislation prohibiting the sale of headphones to minors would help to reduce the prevalence of hearing loss among adolescents.

Note what the assertion is: A law prohibiting the sale to minors will reduce the prevalence of hearing loss. It says a law will help. We need to evaluate whether this law will help. Be careful - we DO NOT need to evaluate whether such a law can be passed or not. We need to figure out that if there is such a law, will it help. It is similar to a case of conditional conclusion which I have discussed here: https://www.veritasprep.com/blog/2012/1 ... onclusion/

a. percentage of federal legislators who would vote for a bill that prohibits the sale of headphones to minors.
This is trying to evaluate whether such a law can be passed. The point is we don't have to evaluate that. We have to evaluate whether such a law can reduce the prevalence of hearing loss among adolescents. This is not the answer.

b. The number of adolescents who use headphones on a regular basis but do not suffer from hearing loss.
We are looking for a reduction in the number, whatever the current percentage may be. This is irrelevant.

c. The extent to which other common adolescent behaviors contribute to hearing loss.
Irrelevant. We want to reduce the number of hearing losses due to headphones. Other causes are irrelevant.

d. The percentage of parents who would refuse to purchase headphones for their adolescent children.
This will help us evaluate whether refusing sale to adolescents will actually curtail access to them. It will certainly help in evaluating whether our law will help the desired impact.

Irrelevant.

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25 Jul 2018, 22:47
please explain why d choice is right as oppose to E
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Updated on: 03 Aug 2018, 06:42
1
Neha1234 wrote:
please explain why d choice is right as oppose to E

Neha1234

For such question look for what is your aim - in this case aim is to reduce the prevalence of hearing loss among adolescents.

Now this one is an evaluate question So strategy would be to answer of yes/no should weaken/strengthen the option. Keep one thing in mind, what ever answer say assume it is true.

a. percentage of federal legislators who would vote for a bill that prohibits the sale of headphones to minors.
Yes/No - either way, will it prevent minor from listening on headphone - No

b. The number of adolescents who use headphones on a regular basis but do not suffer from hearing loss.
High/Low - either way, will it prevent minor from listening on headphone - No

c. The extent to which other common adolescent behaviors contribute to hearing loss.
More/less - either way, will it prevent minor from listening on headphone - No

d. The percentage of parents who would refuse to purchase headphones for their adolescent children.
Let say this percentage is higher, then this will not prevent minor from listening on headphone --- this will weaken the stand
Let say this percentage is lower, then this will prevent many minor from listening on headphone ---- This will strengthen the stand
We were looking for something like this. D is our choice.

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Originally posted by aragonn on 03 Aug 2018, 06:12.
Last edited by aragonn on 03 Aug 2018, 06:42, edited 1 time in total.
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03 Aug 2018, 06:32
Ok basically we have to choose the choice which is evalauting the decresed head phones use scenario.. thanks for clarification argonnn..

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11 Aug 2018, 11:04
1
Doctor: Research shows that adolescents who listen to music on headphones on a regular basis are three times as likely to develop serious hearing loss as are adolescents who do not use headphones. Federal legislation that prohibits the sale of headphones to minors would help to reduce the prevalence of hearing loss among adolescents.

In assessing the doctor’s assertion, it would be most useful to know which of the following?

a. percentage of federal legislators who would vote for a bill that prohibits the sale of headphones to minors.
b. The number of adolescents who use headphones on a regular basis but do not suffer from hearing loss.
c. The extent to which other common adolescent behaviors contribute to hearing loss.
d. The percentage of parents who would refuse to purchase headphones for their adolescent children.

Could anybody please pinpoint the exact reason why C is incorrect? My doubt stems from addressing the part "would help to reduce the prevalence of hearing loss among adolescents". So the doctor gives some statistics, but the conclusion seems to address all the cases that cause hearing loss. Note that it doesn't mention anything like "reduce the prevalence of hearing loss among adolescents who use headphones" - this is a very simple example, but I hope it helps to make my point. Therefore, if there were other substantial factors that may have affected the hearing loss considerably, than no matter whether you ban the sale of headphones to minors or not, the PREVALENCE may still exist. I agree that C does not attack the conclusion directly, if my reasoning is right, whereas D does that directly. I'd be grateful that if anybody could shed some light on my issue. Thanks
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11 Aug 2018, 21:23
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jawele

Here are few thing i want to suggest you.
1. Question is "In assessing the doctor’s assertion" --- So you have to focus on doctor’s assertion , which is Federal legislation that prohibits the sale of headphones to minors would help to reduce the prevalence of hearing loss among adolescents.
2. Now this assertion become your Scope and your answer must explain this assertion and only this assertion. Any thing that is not doing this will be out of scope.Now lets look at C now.
Quote:
c. The extent to which other common adolescent behaviors contribute to hearing loss.

Now ask your self is anyways affecting the problem in hand. Frankly other things are less common. and not affecting the scope. Other choices are explained above. Hope this helped.
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Simple strategy:
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11 Aug 2018, 22:03
Similar type of question:

https://gmatclub.com/forum/700-doctor-r ... 96640.html
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Thanks!
Do give some kudos.

Simple strategy:
“Once you’ve eliminated the impossible, whatever remains, however improbable, must be the truth.”

GMAT Ninja YouTube! Series 1| GMAT Ninja YouTube! Series 2 | How to Improve GMAT Quant from Q49 to a Perfect Q51 | Time management

My Notes:
Reading comprehension | Critical Reasoning | Absolute Phrases | Subjunctive Mood
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11 Nov 2018, 00:28
I eliminated D considering: If the law exists, then why will they purchase and for whom will they purchase? Even if they purchase, they need not mention for whom they are purchasing. Can someone quote on this?
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11 Nov 2018, 00:58

a. percentage of federal legislators who would vote for a bill that prohibits the sale of headphones to minors.
Irrelevant.

b. The number of adolescents who use headphones on a regular basis but do not suffer from hearing loss.
Irrelevant, because it is concluded in the premise that adolescents are 3 times likely to suffer hearing loss anyway

c. The extent to which other common adolescent behaviors contribute to hearing loss.

d. The percentage of parents who would refuse to purchase headphones for their adolescent children.
Law will prohibit sale of headphones to minors, so what is the possibility of a parent, an adult, who can legally buy the headphone and give it to a minor? Correct.

Irrelevant as it is comparing 2 different demographics.
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11 Nov 2018, 06:41
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Inducing this law will prohibit headphone sales to minors but not to their parents. If parents give in to demands of their children, these children will still get headphones by indirect means making the proposal weak. If not, the proposal will not be affected.
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06 Apr 2019, 04:00
aragonn wrote:
Neha1234 wrote:
please explain why d choice is right as oppose to E

Neha1234

For such question look for what is your aim - in this case aim is to reduce the prevalence of hearing loss among adolescents.

Now this one is an evaluate question So strategy would be to answer of yes/no should weaken/strengthen the option. Keep one thing in mind, what ever answer say assume it is true.

a. percentage of federal legislators who would vote for a bill that prohibits the sale of headphones to minors.
Yes/No - either way, will it prevent minor from listening on headphone - No

b. The number of adolescents who use headphones on a regular basis but do not suffer from hearing loss.
High/Low - either way, will it prevent minor from listening on headphone - No

c. The extent to which other common adolescent behaviors contribute to hearing loss.
More/less - either way, will it prevent minor from listening on headphone - No

d. The percentage of parents who would refuse to purchase headphones for their adolescent children.
Let say this percentage is higher, then this will not prevent minor from listening on headphone --- this will weaken the stand
Let say this percentage is lower, then this will prevent many minor from listening on headphone ---- This will strengthen the stand
We were looking for something like this. D is our choice.

Hi,
What if those minors use someone else headphones? Then the parents' refusal wont matter here.
I rejected this thinking that there might be other sources by which they can use headphones. Why it is assumed that only parents will provide headphones to them?
Re: Doctor: Research shows that adolescents who listen to music on headpho   [#permalink] 06 Apr 2019, 04:00
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