In an experiment, two different types of recorded music were

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In an experiment, two different types of recorded music were [#permalink]

11 Feb 2010, 20:19

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Re: neonates in adjacent nurseries [#permalink]

11 Feb 2010, 22:00

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BarneyStinson wrote:

In an experiment, two different types of recorded music were played for neonates in adjacent nurseries in a hospital. In nursery A, classical music was played: in nursery B, rock music was played. After two weeks, it was found that the babies in nursery A cried less, suffered fewer minor ailments, and gained more weight than did the babies in nursery B.

In evaluating the validity of the conclusion suggested by the experiment above it would be most important to know which of the following?
A) The musical preferences of the parents of the two groups of newborns.
Doens't explain the differences of the kids
B) Whether the newborns in both the nurseries were equally healthy and happy at the start of the experiment.
This is the correct option. All things equal, is the music the only change that brought these changes in the neonates.
C) Whether loud rock music can damage the hearing of newborns.
Doesnt explain about the crying,ailments,weight
D) what the average weight of the neonates was before and after the experiment
doesnt really explain this very well as the avg weight gain might be same for a 2 week prrioed always between both nurseries
E) Whether the music was played in the nurseries at all times or only at certain times.
Doesnt explain the issue as the babies could have those tendencies before only.

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Re: neonates in adjacent nurseries [#permalink]

11 Feb 2010, 23:53

I will go with B as well. It is nicely explained.
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Re: neonates in adjacent nurseries [#permalink]

12 Feb 2010, 04:40

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In an experiment, two different types of recorded music were played for neonates in adjacent nurseries in a hospital. In nursery A, classical music was played: in nursery B, rock music was played. After two weeks, it was found that the babies in nursery A cried less, suffered fewer minor ailments, and gained more weight than did the babies in nursery B.

In evaluating the validity of the conclusion suggested by the experiment above it would be most important to know which of the following?
A) The musical preferences of the parents of the two groups of newborns.
Parents musical pref out of scope? Easy throw out answer

B) Whether the newborns in both the nurseries were equally healthy and happy at the start of the experiment.
Correct answer because nursery A could have been nursery designated for healthy babies and nursery B could have been designated for the premature babies that need incubators

C) Whether loud rock music can damage the hearing of newborns.
Damaged hearing does not validate weight gain and C also forgets to consider classical music and nursery A

D) What the average weight of the neonates was before and after the experiment
average weights before/after does not validate crying and ailments

E) Whether the music was played in the nurseries at all times or only at certain times.
Faills to validate the conclusion because only considers how the experiment was administered and forgets to consider the health/states of the babies
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Re: neonates in adjacent nurseries [#permalink]

12 Feb 2010, 09:18

Yes OA is B. Nice explanations btw.
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Re: neonates in adjacent nurseries [#permalink] 12 Feb 2010, 09:18

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In an experiment, two different types of recorded music were

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