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Infants younger than six months who have normal hearing

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Infants younger than six months who have normal hearing  [#permalink]

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New post 23 Feb 2016, 03:42
2
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

72% (01:39) correct 28% (01:49) wrong based on 123 sessions

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Infants younger than six months who have normal hearing can readily distinguish between acoustically similar sounds that are used as part of any language-not only those used in the language spoken by the people who raise them. Young adults can readily distinguish between such sounds only in languages that they regularly use. It is known that the physiological capacity to hear begins to deteriorate after infancy. So the observed difference in the abilities of infants and young adult to distinguish between acoustically similar speech sounds must be the result of the physiological deterioration of hearing.

The reasoning in the argument is flawed because the argument

A. sets an arbitrary cutoff point of six months for the age below which infants are able to distinguish acoustically similar speech sounds

B. does not explain the procedures used to measure the abilities of two very different populations

C. ignores the fact that certain types of speech sounds occur in almost all languages

D. assumes that what is true of a group of people taken collectively is also true of any individual with that group

E. takes a factor that might contribute to an explanation of the observed difference as a sufficient explanation for that difference
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Re: Infants younger than six months who have normal hearing  [#permalink]

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New post 23 Feb 2016, 20:09
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We are given an explanation here about the deteriorating of hearing with age.
But there can be other reasons too for this. Thus we cannot conclude the age is the only factor that is responsible.

Option E says the same thing hence the correct answer.
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Re: Infants younger than six months who have normal hearing  [#permalink]

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New post 24 Feb 2016, 23:43
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1
In this question we have to identify the flaw in the assumption. The author states that after infancy the physiological capacity to hear deteriorates with age. Hence the observed difference in the abilities of infants and young adults to distinguish between acoustically similar speech must be the result of physiological deterioration of hearing. He has no given enough evidence to establish this correlation. The author concluded this just from a mere observation. Hence that is the flaw in his statement.Hence the answer happens to be "E."
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Infants younger than 6 months who have normal hearing  [#permalink]

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New post 13 Apr 2017, 11:30
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This question is from one of the LSAT practice tests. Feel free to try it as I think it's good for practice. I got it correct in around 1 min 30 seconds.

OA: E

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Infants younger than 6 months who have normal hearing &nbs [#permalink] 13 Apr 2017, 11:30
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