LSAT 104 – Section 1 – Question 18

LSAT 104 - Section 1 - Question 18

December 1998

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Question
QuickView		 Type Tags Answer
Choices		 Curve Question
Difficulty		 Psg/Game/S
Difficulty		 Explanation
PT104 S1 Q18
+LR
Strengthen +Streng
Causal Reasoning +CausR
A
80%
169
B
4%
161
C
11%
165
D
5%
163
E
0%
155
138
151
164
 +Medium 149.106 +SubsectionMedium

Astronauts who experience weightlessness frequently get motion sickness. The astronauts see their own motion relative to passing objects, but while the astronauts are weightless their inner ears indicate that their bodies are not moving. The astronauts’ experience is best explained by the hypothesis that conflicting information received by the brain about the body’s motion causes motion sickness.

Summarize Argument: Phenomenon-Hypothesis
The author concludes that motion sickness is caused by the brain receiving conflicting information about the body’s motion.

Notable Assumptions
The author assumes that conflicting information rather than some other phenomenon that astronauts experience in space is responsible for motion sickness. This same phenomenon of conflicting information should thus be applicable on earth, as well.

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.
If the passengers can’t see the water, then they wouldn’t be receiving conflicting information. Since these passengers are less likely to get motion sickness, it would seem the cause really is conflicting information.
B
Many people who are experienced airplane passengers occasionally get motion sickness.
We don’t care about occasional motion sickness. Besides, we have no idea if planes feature the same “conflicting information” phenomenon as space shuttles.
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.
The author never says conflicting information is the only way motion sickness occurs. It’s simply the explanation for how motion sickness occurs for austronauts.
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 would seem to strengthen the author’s argument, but we have no idea if people who sit in window seats are looking out the windows and getting conflicting information. (A) closes that ambiguity.
E
Some astronauts do not get motion sickness even after being in orbit for several days.
The author never says all astronauts get motion sickness. She simply explains what probably causes motion sickness for astronauts.

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LSAT PrepTest 104 Explanations

Section 1 - Logical Reasoning

Section 2 - Reading Comprehension

Section 3 - Reading Comprehension

Section 4 - Logical Reasoning

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