LSAT 113 – Section 4 – Question 13

LSAT 113 - Section 4 - Question 13

June 2002

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Question
QuickView		 Type Tags Answer
Choices		 Curve Question
Difficulty		 Psg/Game/S
Difficulty		 Explanation
PT113 S4 Q13
+LR
Except +Exc
Strengthen +Streng
Causal Reasoning +CausR
A
1%
148
B
29%
154
C
0%
157
D
70%
161
E
0%
149
141
151
160
 +Medium 145.144 +SubsectionEasier

When several of a dermatologist’s patients complained of a rash on just one side of their faces, the dermatologist suspected that the cause was some kind of external contact. In each case it turned out that the rash occurred on the side of the face to which the telephone was held. The dermatologist concluded that the rash was caused by prolonged contact with telephones.

Summarize Argument: Phenomenon-Hypothesis
The dermatologist concludes that the rash was caused by prolonged contact with the telephone. This is because the rash always appeared on the side of the face that patients held the telephone to.

Notable Assumptions
The dermatologist assumes that no other possible phenomenon besides the telephone could be responsible for the rash. This means there was no infection that tends to affect only one side of the face, and that the patients didn’t participate in any other activity where one side of their faces experienced “external contact.” She also assumes telephones can cause rashes.

A
Many telephones are now manufactured using a kind of plastic to which some people are mildly allergic.
This tells us telephones can cause rashes. Perhaps all the patients the dermatologist saw were allergic to the plastic telephones are made from.
B
Contact between other devices and the patients’ faces occurred equally on both sides of their faces.
Telephones were the only device that patients used exclusively on one side of their faces. Since they used other devices on both sides, then both sides should’ve had rashes if the patients had in fact been allergic to those devices.
C
Most of the patients had occupations that required them to use their telephones extensively.
These patients were just on the phone every now and then. They were experiencing “prolonged contact.”
D
Telephones are used by most people in the industrialized world.
We don’t care. We already know these people used the telephone.
E
The complaints occurred after an increase in the patients’ use of the telephone.
Patients began to experience the rash once they increased their telephone use. This points to a causal relationship between using the telephone and experiencing the rash.

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LSAT PrepTest 113 Explanations

Section 1 - Reading Comprehension

Section 2 - Logical Reasoning

Section 3 - Logical Reasoning

Section 4 - Logical Reasoning

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