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LSAT logic 2

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LSAT logic 2 [#permalink] New post 12 Jul 2004, 02:29
Tall children can generally reach high shelves easily. Short children can generally reach high shelves only with difficulty. It is known that short children are more likely than are tall children to become short adults. Therefore, if short children are taught to reach high shelves easily, the proportion of them who become short adults will decrease.

A reasoning error in the argument is that the argument

(A) attributes a characteristic of an individual member of a group to the group as a whole
(B) presupposes that which is to be proved
(C) refutes a generalization by mean of an exceptional case
(D) assumes a causal relationship where only a correlation has be indicated
(E) take lack of evidence for the existence of a state of affairs as evidence that there can be no such state of affairs
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 [#permalink] New post 12 Jul 2004, 02:39
D
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 [#permalink] New post 12 Jul 2004, 04:24
1 min. D as well.
There is a correlation between tall children and short adult. Author immediately takes this as a given fact
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Re: LSAT logic 2 [#permalink] New post 12 Jul 2004, 06:26
I think that it is D. Clearly indicates a faulty causal relation "if..then" in the strong conclusion.

A - This is not inductive reasoning (specific to general)
B - The argument never presupposes that "the proportion of them who become short adults will decrease".
C - Does not quote any exceptional case.
E - Not proving any "lack of such state of affairs"

stolyar wrote:
Tall children can generally reach high shelves easily. Short children can generally reach high shelves only with difficulty. It is known that short children are more likely than are tall children to become short adults. Therefore, if short children are taught to reach high shelves easily, the proportion of them who become short adults will decrease.

A reasoning error in the argument is that the argument

(A) attributes a characteristic of an individual member of a group to the group as a whole
(B) presupposes that which is to be proved
(C) refutes a generalization by mean of an exceptional case
(D) assumes a causal relationship where only a correlation has be indicated
(E) take lack of evidence for the existence of a state of affairs as evidence that there can be no such state of affairs

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 [#permalink] New post 12 Jul 2004, 06:37
D says it all.
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 [#permalink] New post 12 Jul 2004, 07:54
funny CR :)

D it is.
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 [#permalink] New post 12 Jul 2004, 14:33
Agrre D..

Although, B made me think a bit.. :beatup
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 [#permalink] New post 12 Jul 2004, 20:21
D by POE
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 [#permalink] New post 12 Jul 2004, 20:25
Sorry for another post. I think the flaw here is assumes a two-way causal relationship where only a one-way causal relationship has be indicated.
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 [#permalink] New post 13 Jul 2004, 00:35
D is correct
  [#permalink] 13 Jul 2004, 00:35
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