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# Dr. A: The new influenza vaccine is useless at best and

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Manager
Joined: 03 Jan 2008
Posts: 106
Dr. A: The new influenza vaccine is useless at best and [#permalink]

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11 Apr 2008, 13:02
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Dr. A: The new influenza vaccine is useless at best and possibly dangerous. I would never use it on a patient.
Dr. B: But three studies published in the Journal of Medical Associates have rated that vaccine as unusually effective.
Dr. A: The studies must have been faulty because the vaccine is worthless.
In which of the following is the reasoning most similar to that of Dr. A?
(A) Three of my patients have been harmed by that vaccine during the past three weeks, so the vaccine is unsafe.
(B) Jerrold Jersey recommends this milk, and I don’t trust Jerrold Jersey, so I won’t buy this milk.
(C) Wingzz tennis balls perform best because they are far more effective than any other tennis balls.
(D) I’m buying Vim Vitamins. Doctors recommend them more often than they recommend any other vitamins, so Vim Vitamins must be good.
(E) Since University of Muldoon graduates score about 20 percent higher than average on the GMAT, Sheila Lee, a University of Muldoon graduate, will score about 20 percent higher than average when she takes the GMAT.

Haizzzz.... I am struggling with LSAT CR 1000, my test is 10 days left... Dont understand OA of this question. maybe I am getting mad recent days...
CEO
Joined: 17 May 2007
Posts: 2950
Re: CR- Dont understand the OA [#permalink]

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11 Apr 2008, 16:39
C for me - let me know if this is the OA and then i'll explain further.
Manager
Joined: 10 Jul 2006
Posts: 56
Re: CR- Dont understand the OA [#permalink]

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11 Apr 2008, 18:58
D, I guess.

Dr. A does not seems to give any reason for claiming the vaccine useless. The same is done in this choice.
Senior Manager
Joined: 02 Dec 2007
Posts: 449
Re: CR- Dont understand the OA [#permalink]

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12 Apr 2008, 05:58
OA is C
Prejudiced belief in both C and Dr A's statements.
Manager
Joined: 03 Jan 2008
Posts: 106
Re: CR- Dont understand the OA [#permalink]

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12 Apr 2008, 10:42
Nihit wrote:
OA is C
Prejudiced belief in both C and Dr A's statements.

OA is C. Pls explain why
Manager
Joined: 03 Jan 2008
Posts: 106
Re: CR- Dont understand the OA [#permalink]

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12 Apr 2008, 10:43
bsd_lover wrote:
C for me - let me know if this is the OA and then i'll explain further.

Bsd_lover, U always get the OA ..
SVP
Joined: 03 Jan 2005
Posts: 2233
Re: CR- Dont understand the OA [#permalink]

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12 Apr 2008, 12:59
1
KUDOS
notahug wrote:
Dr. A: The new influenza vaccine is useless at best and possibly dangerous. I would never use it on a patient.
Dr. B: But three studies published in the Journal of Medical Associates have rated that vaccine as unusually effective.
Dr. A: The studies must have been faulty because the vaccine is worthless.
In which of the following is the reasoning most similar to that of Dr. A?
(A) Three of my patients have been harmed by that vaccine during the past three weeks, so the vaccine is unsafe.
(B) Jerrold Jersey recommends this milk, and I don’t trust Jerrold Jersey, so I won’t buy this milk.
(C) Wingzz tennis balls perform best because they are far more effective than any other tennis balls.
(D) I’m buying Vim Vitamins. Doctors recommend them more often than they recommend any other vitamins, so Vim Vitamins must be good.
(E) Since University of Muldoon graduates score about 20 percent higher than average on the GMAT, Sheila Lee, a University of Muldoon graduate, will score about 20 percent higher than average when she takes the GMAT.

Stem: A is bad. B said A is good so B must be wrong because A is bad.
This is circular reasoning. You assume to be true what you are supposed to be proving.

(A) Hasty generation. An argument that bases a generalization on insufficient number of instances.
(B) B said A is good but B is untrustworthy, so A is bad. Personal attack. Depute an argument based on the source of the argument.
(C) A is good because A is good. Circular reasoning.
(D) Argument by authority. Bases the judgment of an assertion on the source of the assertion.
(E) Sweeping generalization. Apply a general rule to a specific case.

These are all different types of logical fallacies. To see other types and examples, please read this thread: viewtopic.php?t=40345
_________________

Keep on asking, and it will be given you;
keep on seeking, and you will find;
keep on knocking, and it will be opened to you.

Manager
Joined: 03 Jan 2008
Posts: 106
Re: CR- Dont understand the OA [#permalink]

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12 Apr 2008, 13:16
HongHu wrote:
notahug wrote:
Dr. A: The new influenza vaccine is useless at best and possibly dangerous. I would never use it on a patient.
Dr. B: But three studies published in the Journal of Medical Associates have rated that vaccine as unusually effective.
Dr. A: The studies must have been faulty because the vaccine is worthless.
In which of the following is the reasoning most similar to that of Dr. A?
(A) Three of my patients have been harmed by that vaccine during the past three weeks, so the vaccine is unsafe.
(B) Jerrold Jersey recommends this milk, and I don’t trust Jerrold Jersey, so I won’t buy this milk.
(C) Wingzz tennis balls perform best because they are far more effective than any other tennis balls.
(D) I’m buying Vim Vitamins. Doctors recommend them more often than they recommend any other vitamins, so Vim Vitamins must be good.
(E) Since University of Muldoon graduates score about 20 percent higher than average on the GMAT, Sheila Lee, a University of Muldoon graduate, will score about 20 percent higher than average when she takes the GMAT.

Stem: A is bad. B said A is good so B must be wrong because A is bad.
This is circular reasoning. You assume to be true what you are supposed to be proving.

(A) Hasty generation. An argument that bases a generalization on insufficient number of instances.
(B) B said A is good but B is untrustworthy, so A is bad. Personal attack. Depute an argument based on the source of the argument.
(C) A is good because A is good. Circular reasoning.
(D) Argument by authority. Bases the judgment of an assertion on the source of the assertion.
(E) Sweeping generalization. Apply a general rule to a specific case.

These are all different types of logical fallacies. To see other types and examples, please read this thread: viewtopic.php?t=40345

Tks HongHu. Great help! Kudos for you
CEO
Joined: 17 May 2007
Posts: 2950
Re: CR- Dont understand the OA [#permalink]

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12 Apr 2008, 17:03
LOL ok here's my logic :
What I understood from the question was :
Dr A says "this influenza vaccine is crap" why ? "because its just crap" any to any other logic "must be wrong because this influenza vaccine is crap"

Only C has similar disregard for reason or logic.

notahug wrote:
bsd_lover wrote:
C for me - let me know if this is the OA and then i'll explain further.

Bsd_lover, U always get the OA ..
Senior Manager
Joined: 10 Mar 2008
Posts: 360
Re: CR- Dont understand the OA [#permalink]

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16 Apr 2008, 11:30
Guys, isn't this strictly an LSAT CR question. I don't think GMAT would test this form of reasoning or am I wrong?
Re: CR- Dont understand the OA   [#permalink] 16 Apr 2008, 11:30
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