It is currently 18 Nov 2017, 16:47

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

In response to office workers' worries about the health risks

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

Manager
Manager
avatar
Joined: 17 Oct 2015
Posts: 115

Kudos [?]: 55 [0], given: 317

Location: India
Concentration: Finance
Schools: ISB '18 (S)
GMAT 1: 690 Q47 V37
GMAT 2: 700 Q44 V41
WE: Corporate Finance (Commercial Banking)
Reviews Badge
In response to office workers' worries about the health risks [#permalink]

Show Tags

New post 20 Feb 2016, 05:18
3
This post was
BOOKMARKED
00:00
A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

80% (01:23) correct 20% (02:04) wrong based on 99 sessions

HideShow timer Statistics

In response to office workers' worries about the health risks associated with using video display terminals (VDTs), researchers asked office workers to estimate both the amount of time they had spent using VDTs and how often they had suffered headaches over the previous year. According to the survey, frequent VDT users suffered from headaches more often than other office workers did, leading researchers to conclude that VDTs cause headaches.

Which one of the following, if true, most undermines the researchers' conclusion?

(A) Few of the office workers surveyed participated in regular health programs during the year in question.

(B) In their study the researchers failed to ask the workers to distinguish between severe migraine headaches and mild headaches.

(C) Previous studies have shown that the glare from VDT screens causes some users to suffer eyestrain.

(D) Office workers who experienced frequent headaches were more likely than other workers to overestimate how much time they spent using VDTs.

(E) Office workers who regularly used VDTs experienced the same amount of .iob-related stress as workers who did not use VDTs
[Reveal] Spoiler: OA

Kudos [?]: 55 [0], given: 317

Intern
Intern
avatar
Joined: 01 Feb 2016
Posts: 19

Kudos [?]: 20 [0], given: 0

Re: In response to office workers' worries about the health risks [#permalink]

Show Tags

New post 21 Feb 2016, 05:37
Conclusion: VDTs cause headaches.
Evidence: Frequent VDT users suffered from headaches more often than other office workers did.
Relevant factor influencing evidence: the time spent using VDTs is based on an ESTIMATION. So is the frequency of the occurrence of headaches.

Option A. Who are the FEW office workers in question? Are they those who suffered headaches, or those who did not? It would be helpful to know this. Furthermore, does the participation in a health program - regular or otherwise - ensure that one will not have headaches - and even if it did, what would be the connection between that and the effects of using VDTs regularly? IRRELEVANT.

Option B. The distinction between mild and severe headaches narrows the scope of the passage and so makes this option irrelevant. The passage is talking about headaches in general, and this general category encompasses all possible degrees of severity. IRRELEVANT.

Option C. The passage draws a conclusion on the basis of a particular survey: therefore, the weakening or strengthening of that conclusion must occur within the framework of factors relevant to the survey. What previous studies have shown is therefore beside the point. Furthermore, the conclusion that we are asked to weaken involves headaches: eyestrain has nothing to do with it. IRRELEVANT.

Option D. We need to take note of the fact the evidence used in the researchers' survey is vitiated (as is the conclusion) by the fact that it is based on ESTIMATIONS. These do not readily provide solid fact: they can very easily be highly subjective and wildly inaccurate. If, as this option states, the workers who experienced frequent headaches were more likely than other workers to overestimate how much time they spent using VDTs, the conclusion that VDTs cause headaches is greatly weakened. The reason for this is that if the time spent in front of VDTs by headache-sufferers is significantly less than it is estimated to be, there is significantly less evidence that VDTs cause headaches. CORRECT.

Note also that this is the only option that refers - in the word OVERESTIMATE - to the factor that vitiates the evidence and the conclusion of the argument, and is therefore a prime contender for the position of correct answer. If you were in real doubt between a number of options, this factor could help you to make an intelligent guess.

Option E. If the evidence and conclusion of the argument involved the claim that VDTs have an impact on health in general, it would be possible to state (assuming that JOB-RELATED STRESS falls under the category of HEALTH) that this option weakens the argument. The option would indicate that since this kind of stress occurs just as frequently among VDT users as among those who do not use them, VDTs are not its cause. Nevertheless, the conclusion of the passage is that VDTs cause headaches, and the evidence on which this conclusion rests is that frequent VDT users suffered headaches more frequently. We therefore have to stick with headaches. MISLEADING AND IRRELEVANT.

If you like this post, please give it KUDOS.

You can also visit us at http://www.xgmat.com/

Kudos [?]: 20 [0], given: 0

Moderator
avatar
D
Joined: 22 Jun 2014
Posts: 939

Kudos [?]: 464 [0], given: 113

Location: India
Concentration: General Management, Technology
GMAT 1: 540 Q45 V20
GPA: 2.49
WE: Information Technology (Computer Software)
Premium Member CAT Tests
Re: In response to office workers' worries about the health risks [#permalink]

Show Tags

New post 30 Mar 2016, 14:20
VDT causes headaches

to weaken this relationship any choice that says study data is wrong then this conclusion will not hold. choice D says exactly that.
_________________

---------------------------------------------------------------
Target - 720-740
http://gmatclub.com/forum/information-on-new-gmat-esr-report-beta-221111.html
http://gmatclub.com/forum/list-of-one-year-full-time-mba-programs-222103.html

Kudos [?]: 464 [0], given: 113

Manager
Manager
User avatar
G
Joined: 13 Aug 2015
Posts: 204

Kudos [?]: 71 [0], given: 64

GMAT 1: 710 Q49 V38
GPA: 3.82
WE: Corporate Finance (Retail Banking)
GMAT ToolKit User Reviews Badge
In response to office workers' worries about the health risks [#permalink]

Show Tags

New post 05 Aug 2017, 19:48
In response to office workers' worries about the health risks associated with using video display terminals (VDTs), researchers asked office workers to estimate both the amount of time they had spent using VDTs and how often they had suffered headaches over the previous year. According to the survey, frequent VDT users suffered from headaches more often than other office workers did, leading researchers to conclude that VDTs cause headaches.

Which one of the following, if true, most undermines the researchers' conclusion?
(A) Few of the office workers surveyed participated in regular health programs during the year in question.
(B) In their study the researchers failed to ask the workers to distinguish between severe migraine headaches and mild headaches.
(C) Previous studies have shown that the glare from VDT screens causes some users to suffer eyestrain.
(D) Office workers who experienced frequent headaches were more likely than other workers to overestimate how much time they spent using VDTs.
(E) Office workers who regularly used VDTs experienced the same amount of job-related stress as workers who did not use VDTs.

Source: LSAT CR
_________________

If you like my posts, please give kudos. Help me unlock gmatclub tests.

Kudos [?]: 71 [0], given: 64

Manager
Manager
avatar
B
Joined: 20 Jun 2014
Posts: 53

Kudos [?]: 14 [0], given: 24

GMAT 1: 630 Q49 V27
GMAT 2: 660 Q49 V32
Reviews Badge
Re: In response to office workers' worries about the health risks [#permalink]

Show Tags

New post 05 Aug 2017, 20:00
AB are out of scope
E strengthens by ruling out other reason
Between C & D
C talks about eyestrain that can be a cause of headache but it uses some. Some can be from 1 to all . So doesn't weakens much
I go with D.
If office workers who have frequent headaches spend much less time than they estimate ..VDT might not be the cause at all

Kudos [?]: 14 [0], given: 24

Intern
Intern
avatar
B
Joined: 31 Jan 2017
Posts: 41

Kudos [?]: 2 [0], given: 177

Re: In response to office workers' worries about the health risks [#permalink]

Show Tags

New post 05 Aug 2017, 23:02
Ans - D
Because it seriously undermines by stating that the workers didn't estimate the actual time they had spent using VDTs which leads researchers to conclude wrong about headache

Sent from my HTC Desire 816G dual sim using GMAT Club Forum mobile app

Kudos [?]: 2 [0], given: 177

Retired Moderator
avatar
B
Joined: 13 Feb 2015
Posts: 807

Kudos [?]: 8 [0], given: 32

Premium Member
Re: In response to office workers' worries about the health risks [#permalink]

Show Tags

New post 08 Aug 2017, 12:13
Merged topics. Please, search before posting questions!
_________________

Please Read: Verbal Posting Rules

Kudos [?]: 8 [0], given: 32

Re: In response to office workers' worries about the health risks   [#permalink] 08 Aug 2017, 12:13
Display posts from previous: Sort by

In response to office workers' worries about the health risks

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.