LSAT 115 – Section 2 – Question 21

LSAT 115 - Section 2 - Question 21

December 2002

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Question
QuickView		 Type Tags Answer
Choices		 Curve Question
Difficulty		 Psg/Game/S
Difficulty		 Explanation
PT115 S2 Q21
+LR
Sufficient assumption +SA
Conditional Reasoning +CondR
Quantifier +Quant
Link Assumption +LinkA
A
19%
158
B
5%
158
C
14%
157
D
9%
159
E
52%
166
154
162
170
 +Hardest 148.811 +SubsectionMedium

Cognitive psychologist: The majority of skilled artists are very creative people, and all people who are very creative are also good at abstract reasoning. However, not all skilled artists are famous. It follows that some people who are good at abstract reasoning are famous.

Summary
The author concludes that some people who are good at abstract reasoning are famous.
This is based on the following premises:
Most skilled artists are very creative.
All people who are very creative are also good at abstract reasoning.
(The part about “not all” skilled artists being famous isn’t being used as a premise, because it doesn’t help prove a claim about some people being famous.)

Missing Connection
We know from connecting the two premises that most skilled artists are good at abstract reasoning. How can we get from this to the conclusion that some people good at abstract reasoning are famous?
Notice that “famous” is a new concept in the conclusion. We want to add something that will guarantee at least some of the skilled artists who are good at abstract reasoning are famous. For example:
Most skilled artists are famous.
Everyone who is very creative is famous.

A
Most skilled artists are good at abstract reasoning.
(A) doesn’t tell us anything about who is famous. Since we don’t have any premise that establishes who is famous, an answer that doesn’t tell us who is famous cannot make the argument valid.
B
Most people who are very creative are skilled artists.
(B) doesn’t tell us anything about who is famous. Since we don’t have any premise that establishes who is famous, an answer that doesn’t tell us who is famous cannot make the argument valid.
C
Some skilled artists are not famous.
Learning that some skilled artists are NOT famous doesn’t help me prove who IS famous.
D
All people who are good at abstract reasoning are very creative.
(D) doesn’t tell us anything about who is famous. Since we don’t have any premise that establishes who is famous, an answer that doesn’t tell us who is famous cannot make the argument valid.
E
Most skilled artists are famous.
If most skilled artists are famous, and we know from the premises that most skilled artists are good at abstract reasoning, that establishes some people who are good at abstract reasoning are famous.

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LSAT PrepTest 115 Explanations

Section 1 - Reading Comprehension

Section 2 - Logical Reasoning

Section 3 - Reading Comprehension

Section 4 - Logical Reasoning

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