Astronauts - Strengthen

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Astronauts - Strengthen

by ranjeet75 » Wed May 09, 2012 8:58 pm
Astronauts who experience weightlessness frequently get motion sickness. They see their own motion relative to passing objects, but while the astronauts are weightless their inner ears indicate that their bodies are not moving. This astronauts' experience is best explained by the hypothesis that conflicting information received by the brain about the body's motion causes motion sickness.
Which one of the following, if true, provides the strongest additional support for the hypothesis above?
A. During rough voyages ship passengers in cabins providing a view of the water are less likely to get motion sickness than are passengers in cabins providing no view.
B. Many people who are experienced airplane passengers occasionally get motion sickness.
C. Some automobile passengers whose inner ears indicate that they are moving and who have a clear view of the objects they are passing get motion sickness.
D. People who have aisle seats in trains or airplanes are as likely to get motion sickness as are people who have window seats.
E. Some astronauts do not get motion sickness even after being in orbit for several days.

OA is [spoiler]A[/spoiler], The argument says that when astronauts see passing objects, it appears to them that they are in motion but their inner sense tells them that they are not moving. Both contrasting information, when supplied to brain, causes motion sickness.

Option [spoiler]A[/spoiler] however tells just reverse information that when passengers, who can view the water (means can see passing objects), are less likely than passengers in cabin, who can't see passing objects, to get motion sickness.
Source: — Critical Reasoning |

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by confuse mind » Wed May 09, 2012 9:28 pm
IMO - D

A goes against the hypothesis

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by spartacus1412 » Thu May 10, 2012 8:21 pm
D
motion sickness occurs when conflicting informtaion is sent to the brain.

here, the passenger's brain is informed that it is moving while the body sits and wathces other vehicles pass by.
this statement strongly supports the hypothesis.
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by ice_rush » Thu May 10, 2012 9:33 pm
We need to support the hypothesis that conflicting information to the brain causes motion sickness. Only choice (A) does that.

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by Gaurav 2013-fall » Thu May 17, 2012 5:42 am
experts please SOS!

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by veenu08 » Mon Jul 08, 2013 10:30 am
Can someone please expalin the answer

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by Gaurav 2013-fall » Tue Jul 09, 2013 9:40 am
Astronauts(feel not moving but observe themselves moving)
Ship inside the cabin with no view(feel they are moving, but inside they observe that they are not moving) hence represent the hypothesis correctly.
Note example of ship is opposite to astronauts one but matches the hypothesis ( feel and observe opposite).

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by theunheardmelody » Tue Jul 09, 2013 11:26 am
I arrived at A and below is my reasoning.

Fact 1 - Weightlesness causes motion sickness due to seeing their own motion relative to other objects.
Fact 2 - Weighlessness also ears to send signal to the brain that bodies are not moving..
Inference - Conflict in this causes motion sickness.

Objective - To find similar evidence of conflicting info so support above inference.

A. During rough voyages ship passengers in cabins providing a view of the water are less likely to get motion sickness than are passengers in cabins providing no view.
This clearly explains the logic since "view of the water" provides relative movement and this conflicts with the information from the ear.Not having the view means there is no conflict in the brain and hence they are less likely to get motion sickness if they cannot see the water.

B. Many people who are experienced airplane passengers occasionally get motion sickness.
Does not pertain to he question at all.. eliminate

C. Some automobile passengers whose inner ears indicate that they are moving and who have a clear view of the objects they are passing get motion sickness.
Contradictory since inner ears say body is not moving in the original statement

D. People who have aisle seats in trains or airplanes are as likely to get motion sickness as are people who have window seats.
This cannot be correct since it actually goes against the main statement . Relative movement is a factor which cannot be experienced when you are in a aisle seat. We need to find a statement that explains the conflict that body is moving (from eyes) and not moving (ears).

E. Some astronauts do not get motion sickness even after being in orbit for several days.
Does not apply since we are not worried about time

I hope this helps [/quote]

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by [email protected] » Mon Jul 22, 2013 5:36 am
I think the poster above stated just the opposite.

A is indeed the correct answer as stated by the second last poster. The motion sickness is caused when there are two contrasting suggestions to the brian:

1. By the ear
2. By the view and observation of relative movement.

A clearly states that the people who are provided the view do not feel motion sickness because:

1. While their ear is telling them they are moving, they can't see that they are moving
2. Upon observing the view and realizing that they are indeed moving this information confirms the signal of the ear here.

Please note that motion is always relative. We consider motion by comparing ourselves with something.