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The usefulness of lie detectors cannot be overestimated.

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The usefulness of lie detectors cannot be overestimated. [#permalink]

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New post 17 Jun 2009, 23:30
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The usefulness of lie detectors cannot be overestimated. Although there is no employee screening procedure that is 100 percent accurate, the lie detector is a valuable tool for employers and employees alike. The lie detector’s usefulness is amply demonstrated in a recent survey conducted by a prestigious university. In the survey, those employees of a large company who were applying for a newly created position within the company were asked if they had ever worked on Project X. More than one-third of the applicants studied lied and said they had worked on the project—a project that never existed.
Which one of the following best identifies a flaw in the author’s argument about the usefulness of lie detectors?
(A) The argument depends on the assumption the whatever is good for the employer is good for the employee.
(B) Since lie detectors are known to be less than 100 percent accurate, the test will tend to help only those with something to hide.
(C) By referring to a prestigious university, the author is appealing to authority rather than to evidence.
(D) The study shows only that certain individual will lie, not that the lie detector can detect them.
(E) The author fails to address the issue that the use of lie detectors may fail to prevent embezzlement.
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Re: Lie Detectors [#permalink]

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New post 18 Jun 2009, 00:17
A

All other answers are not relevant.

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Re: Lie Detectors [#permalink]

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New post 18 Jun 2009, 02:14
IMO D

The flaw is that: the study is conducted on such employees whom the study will show to be lie because they are surely known not doing that, not because the lie detector can show that they lie

Other choices do not state the fundamental flaw

The usefulness of lie detectors cannot be overestimated. Although there is no employee screening procedure that is 100 percent accurate, the lie detector is a valuable tool for employers and employees alike. The lie detector’s usefulness is amply demonstrated in a recent survey conducted by a prestigious university. In the survey, those employees of a large company who were applying for a newly created position within the company were asked if they had ever worked on Project X. More than one-third of the applicants studied lied and said they had worked on the project—a project that never existed.
Which one of the following best identifies a flaw in the author’s argument about the usefulness of lie detectors?
(A) The argument depends on the assumption the whatever is good for the employer is good for the employee.
(B) Since lie detectors are known to be less than 100 percent accurate, the test will tend to help only those with something to hide.
(C) By referring to a prestigious university, the author is appealing to authority rather than to evidence.
(D) The study shows only that certain individual will lie, not that the lie detector can detect them --> the best
(E) The author fails to address the issue that the use of lie detectors may fail to prevent embezzlement.

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Re: Lie Detectors [#permalink]

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New post 18 Jun 2009, 04:43
I do with option 'D'

D)The study shows only that certain individual will lie, not that the lie detector can detect them.

According to the passage:
In the survey, those employees of a large company who were applying for a newly created position within the company were asked if they had ever worked on Project X. More than one-third of the applicants studied lied and said they had worked on the project—a project that never existed.
Here it is clearly stated that the project never existed, so when 1/3 of the applicants lied about having worked on that project, it can be judged even without a detector. It does not indicate anywhere in the passage that the detector detected it.
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Re: Lie Detectors [#permalink]

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New post 20 Jun 2009, 03:48
D for me.
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Re: Lie Detectors [#permalink]

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New post 23 Jun 2009, 09:36
OA Please ?

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Re: Lie Detectors   [#permalink] 23 Jun 2009, 09:36
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The usefulness of lie detectors cannot be overestimated.

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