LSAT Comparative Reading Passages Practice Questions with Answers

Concept Explanation

LSAT Comparative Reading Passages require test-takers to analyze two shorter, related texts—labeled Passage A and Passage B—to identify shared themes, conflicting perspectives, and subtle differences in tone or scope.

Introduced by the Law School Admission Council (LSAC) in 2007, this section tests your ability to synthesize information across multiple sources, a skill vital for legal research and litigation. While traditional LSAT Prep focuses on a single long text, comparative reading demands a dual-focus strategy. You must track the specific arguments of each author while maintaining a mental map of how they interact. Common question types include identifying common ground, finding points of disagreement, and determining how an idea in one passage would be viewed by the author of the other. Success on these passages hinges on recognizing the relationship between the texts, which usually falls into one of three categories: overlapping agreement, direct conflict, or general vs. specific application. To improve your overall score, you might also find it helpful to look at hard reading comprehension questions to sharpen your general analytical skills.

Solved Examples

Below are three examples of how to approach common LSAT Comparative Reading question types. Each example includes a summary of the relationship between two hypothetical passages.

1. The Agreement Question: Passage A argues that strict environmental regulations are necessary to prevent long-term economic collapse. Passage B argues that while regulations can be costly, they are the only way to ensure the sustainability of natural resources. Both passages would most likely agree with which one of the following?
   1. Environmental protection is more important than short-term profit.
   2. Solution: 1. Identify the common premise. Passage A links environment to the economy; Passage B links it to sustainability. Both prioritize environmental health over immediate financial gain. 2. Eliminate options that only apply to one passage (e.g., specific economic theories).
2. The Disagreement Question: Passage A claims that jury nullification is a vital safeguard against unjust laws. Passage B claims that jury nullification undermines the rule of law and creates legal inconsistency. The authors would be most likely to disagree over:
   1. Whether juries have the power to acquit defendants.
   2. Whether jury nullification is beneficial to the legal system.
   3. Solution: 1. Locate the point of friction. Passage A says it's a "vital safeguard" (positive), while Passage B says it "undermines" the system (negative). 2. Choose the answer that captures this normative conflict.
3. The Analogy Question: Passage A describes the behavior of a virus in a biological system. Passage B describes the spread of misinformation in social networks. Which of the following best describes the relationship between the two passages?
   1. Passage B applies a theoretical model discussed in Passage A to a different field.
   2. Solution: 1. Determine the scope. Passage A is scientific; Passage B is sociological. 2. Recognize that Passage B uses the "viral" concept as a metaphor or parallel, making it an application of the underlying mechanism to a new context.

Practice Questions

Read the following summaries of Passage A and Passage B, then answer the questions that follow.

Passage A: Argues that the use of AI in sentencing criminals ensures objectivity by removing human bias and historical prejudices from the courtroom.

Passage B: Warns that AI algorithms are often trained on biased historical data, meaning they may inadvertently codify and automate the very prejudices they were intended to eliminate.

1. Which of the following best describes the relationship between Passage A and Passage B?
   1. Passage A provides a solution to a problem that Passage B argues is unsolvable.
   2. Passage B challenges the primary assumption regarding the efficacy of the solution proposed in Passage A.
   3. Passage A and Passage B both advocate for the complete removal of humans from the sentencing process.
   4. Passage B provides empirical evidence that supports the theoretical claims made in Passage A.
2. Based on the passages, the authors would be most likely to disagree on which of the following?
   1. Whether human judges are capable of being biased.
   2. Whether AI algorithms are currently used in legal settings.
   3. Whether AI is an effective tool for achieving objectivity in sentencing.
   4. Whether historical data is relevant to modern sentencing.
3. The author of Passage B would most likely characterize the "objectivity" mentioned in Passage A as:
   1. A necessary goal that has finally been achieved.
   2. An impossibility regardless of the technology used.
   3. An illusion caused by the masking of bias within code.
   4. A secondary concern compared to the speed of sentencing.

4. Suppose a new study proves that AI algorithms can be programmed to ignore biased historical data points. How would this affect the two passages?
   1. It would strengthen Passage A and weaken Passage B.
   2. It would weaken Passage A and strengthen Passage B.
   3. It would have no effect on either passage.
   4. It would suggest that neither author understands the technology.
5. Which of the following is a concern raised by Passage B but NOT by Passage A?
   1. The potential for human error in the courtroom.
   2. The source of the data used to train sentencing software.
   3. The cost of implementing AI technology in the legal system.
   4. The constitutional legality of AI-driven sentencing.
6. Both authors would likely agree that:
   1. The current legal system is perfectly objective.
   2. Technology is playing an increasing role in the judiciary.
   3. Biased data is better than a biased human judge.
   4. AI sentencing should be banned immediately.
7. If Passage A were to be expanded, which topic would most likely be included based on its current tone?
   1. A list of specific AI software packages and their success rates in reducing recidivism.
   2. A philosophical critique of the concept of "justice."
   3. An interview with a judge who was replaced by an algorithm.
   4. A history of racial bias in 19th-century law.
8. Which of the following phrases from Passage B best captures its central thesis?
   1. "removing human bias"
   2. "trained on biased historical data"
   3. "objectivity by removing human bias"
   4. "codify and automate the very prejudices"

Answers & Explanations

1. Answer: B. Passage A presents AI as a solution to bias. Passage B argues that this solution is flawed because it relies on biased data. Thus, B challenges the assumption that AI is inherently objective.
2. Answer: C. Passage A claims AI ensures objectivity. Passage B claims AI automates prejudice. This is a direct conflict regarding AI's effectiveness in achieving objectivity.
3. Answer: C. Passage B suggests that while the system might look objective (because it's a computer), it is actually hiding old human biases in its data, making that objectivity an "illusion."
4. Answer: A. Passage B's primary criticism is the reliance on biased data. If that data can be ignored or neutralized, Passage B's main argument is undermined, while Passage A's optimism is supported.
5. Answer: B. Passage B specifically mentions the training data as a source of concern. Passage A focuses on the output (objectivity) without questioning the input (data).
6. Answer: B. While they disagree on the value of AI, both passages are written in a context where AI is being discussed or used in sentencing, implying its increasing role.
7. Answer: A. Passage A is optimistic and focuses on the benefits of the technology. Providing data on success rates (recidivism) fits this supportive, outcome-oriented tone.
8. Answer: D. The core of Passage B's warning is that the technology doesn't fix the problem; it just makes the problem harder to see by automating it.

Frequently Asked Questions

How long are LSAT Comparative Reading passages?

Together, the two passages (A and B) total approximately 450 to 500 words, which is roughly the same length as a single standard LSAT reading comprehension passage. This ensures that the time required to read the pair is consistent with other sections of the exam.

Do the two passages always disagree?

No, the passages do not always take opposing sides. Sometimes they discuss the same topic from different perspectives, or one passage provides a specific example of a general phenomenon described in the other.

Should I read Passage A and then answer its questions before reading Passage B?

Generally, it is better to read both passages before answering any questions. Since most questions ask about the relationship between the two, you need a complete picture of both arguments to choose the correct answer accurately.

What is the most common question type in this section?

The most frequent questions ask for the "Point of Agreement" or "Point of Disagreement." These require you to find a specific claim that both authors mention and either support or contest.

How can I improve my speed on comparative passages?

Practice active reading by jotting down a one-sentence summary of each passage's main point and their relationship. You can also use the Retrieval Challenge tool to improve your ability to recall key details without re-reading.