LSAT 104 – Section 1 – Question 02

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December 1998

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Target time: 0:51

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Question QuickView	Type	Tags	Answer Choices	Curve This gives you an idea of how this question is “curved”— in other words, what level of scorer is likely to get this question right. It shows a model of scaled LSAT score vs probability of getting the question correct. It is based on student test results for each question. The gray bar extends from the score for a 25% chance, to the score for a 75% chance of getting the question correct. The black line in the middle is the score for a 50% chance of getting the question correct. The percentage at the right is the expected chance of someone with the same score as you on that PrepTest getting that question correct	Question Difficulty	Psg/Game/S Difficulty	Explanation

Question QuickView	Type	Tags	Answer Choices	Curve This gives you an idea of how this question is “curved”— in other words, what level of scorer is likely to get this question right. It shows a model of scaled LSAT score vs probability of getting the question correct. It is based on student test results for each question. The gray bar extends from the score for a 25% chance, to the score for a 75% chance of getting the question correct. The black line in the middle is the score for a 50% chance of getting the question correct. The percentage at the right is the expected chance of someone with the same score as you on that PrepTest getting that question correct	Question Difficulty	Psg/Game/S Difficulty	Explanation
PT104 S1 Q02	+LR	Flaw or descriptive weakening +Flaw Link Assumption +LinkA Math +Math	A 3% 160 B 0% 140 C 2% 153 D 94% 169 E 1% 154	137 145 152	+Medium	149.106 +SubsectionMedium

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J.Y.’s explanation

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Although 90 percent of the population believes itself to be well informed about health care, only 20 percent knows enough about DNA to understand a news story about DNA. So apparently at least 80 percent of the population does not know enough about medical concepts to make well-informed personal medical choices or to make good public policy decisions about health care.

Summarize Argument

The author concludes that at least 80% of people don’t know enough about medical concepts to make well-informed personal medical decisions or good public policy decisions about health care. He supports this by noting that 20% of people understand enough about DNA to understand a news story about DNA, meaning 80% of people don't.

Identify and Describe Flaw

The author assumes that because 80% of people don't understand DNA well enough to follow a news story about it, they can't make well-informed personal medical decisions or public health decisions. However, he fails to provide evidence that explains how understanding DNA is necessary for making those decisions.

those people who can understand news stories about DNA are able to make well-informed personal medical choices

The author assumes that people who cannot understand news stories about DNA are unable to make well-informed personal medical decisions (or that people who can make these decisions must be able to understand news stories about DNA). (A) has this backward.

more than 20 percent of the population needs to be well informed about health care for good public policy decisions about health care to be made

The author concludes that 80% of people can’t make good public policy decisions because they can’t understand a news story about DNA, but he never suggests that over 20% of people need to be well informed about health care for good public policy decisions to be made.

one’s being able to make well-informed personal medical choices ensures that one makes good public policy decisions about health care

The author never suggests a causal connection between making well-informed personal medical choices and making good public policy decisions about health care. Instead, he assumes that one has to understand DNA in order to make these personal and public health decisions.

an understanding of DNA is essential to making well-informed personal medical choices or to making good public policy decisions about health care

This describes the author’s unsupported assumption. He claims that 80% of people can’t make good personal medical decisions or public policy decisions because they can’t understand DNA, but he fails to demonstrate that understanding DNA is necessary for making those decisions.

since 90 percent of the population believes itself to be well informed about health care, at least 70 percent of the population is mistaken in that belief

Just because 80% of people don’t understand DNA doesn’t mean they’re not well informed about health care. The author doesn’t argue that not understanding DNA means someone isn’t well informed about health care, but rather that they can't make informed personal medical decisions.

LSAT 104 – Section 1 – Question 02

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J.Y.’s explanation

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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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