LSAT 124 – Section 1 – Question 24

LSAT 124 - Section 1 - Question 24

December 2007

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Question
QuickView		 Type Tags Answer
Choices		 Curve Question
Difficulty		 Psg/Game/S
Difficulty		 Explanation
PT124 S1 Q24
+LR
Except +Exc
Resolve reconcile or explain +RRE
A
5%
160
B
5%
156
C
5%
156
D
82%
165
E
3%
156
143
152
160
 +Medium 146.495 +SubsectionMedium

People perceive color by means of certain photopigments in the retina that are sensitive to certain wavelengths of light. People who are color-blind are unable to distinguish between red and green, for example, due to an absence of certain photopigments. What is difficult to explain, however, is that in a study of people who easily distinguish red from green, 10 to 20 percent failed to report distinctions between many shades of red that the majority of the subjects were able to distinguish.

"Surprising" Phenomenon
Why did 10 to 20 percent of people who could easily distinguish red from green fail to report a distinction between many shades of red that the majority of people who could distinguish red from green were able to distinguish?

Objective
The correct answer will be the only answer that doesn’t help explain the phenomenon where 10 to 20 percent of people who could easily distinguish red from green failed to report a distinction between many shades of red. The correct answer must give us information that doesn’t affect our understanding of the phenomenon or information that makes the phenomenon more difficult to explain.

A
People with abnormally low concentrations of the photopigments for perceiving red can perceive fewer shades of red than people with normal concentrations.
This could account for the non-colorblind people who were unable to distinguish between certain shades of red. They may have had an abnormally low concentration of the photopigments for perceiving red.
B
Questions that ask subjects to distinguish between different shades of the same color are difficult to phrase with complete clarity.
If these sorts of questions are difficult to phrase clearly, the non-colorblind people who failed to distinguish between certain shades of red may have actually been able to distinguish between the shades but just misunderstood the questions they were being asked.
C
Some people are uninterested in fine gradations of color and fail to notice or report differences they do not care about.
If (C) is true, the people who failed to distinguish between the various shades of red may have actually been able to distinguish between the shades but just didn’t care enough about the distinctions to notice them or report them.
D
Some people are unable to distinguish red from green due to an absence in the retina of the photopigment sensitive to green.
Reasons why some people can’t distinguish red from green are irrelevant. We need to know why 10 to 20 percent of the people who are capable of distinguishing red from green failed to distinguish between many shades of red.
E
Some people fail to report distinctions between certain shades of red because they lack the names for those shades.
If (E) is true, the people who failed to distinguish between the various shades of red may have actually been able to distinguish between the shades but just didn’t know the words necessary to report the distinctions.

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LSAT PrepTest 124 Explanations

Section 1 - Logical Reasoning

Section 2 - Logical Reasoning

Section 3 - Logical Reasoning

Section 4 - Reading Comprehension

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