Resolve a Contradiction - Reading Comprehension

SECTION 1

Historical Context & Motivation

The resolve a contradiction question type has been a staple of the LSAT since the Law School Admission Council began refining its assessment of analytical reading in the 1980s. These questions test a skill that lies at the heart of legal practice: the ability to reconcile seemingly incompatible pieces of evidence or argument. Lawyers routinely encounter situations in which two facts appear to conflict — a contract clause that seems to undermine the purpose of the agreement, a witness whose testimony contradicts physical evidence, or a statute that appears inconsistent with established precedent. The LSAT's resolve a contradiction items measure whether test-takers can identify an additional piece of information that explains away the apparent conflict, demonstrating the kind of nuanced reasoning that law school demands.

1948 • Birth of the LSAT

The Law School Admission Test is first administered, featuring early forms of reading comprehension and logical reasoning designed to predict success in legal education.

1982 • Modern Format Emerges

LSAC restructures the exam to include distinct Reading Comprehension and Logical Reasoning sections, embedding paradox-resolution items that test analytical reconciliation skills.

1991 • Comparative Reading Introduced

LSAC experiments with paired passages, increasing the frequency of contradiction-resolution questions that require synthesizing conflicting viewpoints across texts.

2007 • Dual-Passage Format Standardized

Comparative reading becomes a permanent fixture, and resolve-a-contradiction questions gain prominence as test-makers emphasize cross-passage analytical reasoning.

2019–Present • Digital LSAT Era

The transition to digital administration preserves the resolve-a-contradiction question type, reflecting its enduring value as a measure of legal analytical aptitude.

The central question these items pose is deceptively straightforward: given two claims that appear mutually exclusive, what additional fact or principle would allow both claims to be simultaneously true? This skill transcends the LSAT itself. In legal reasoning, the ability to resolve apparent contradictions is what separates a competent advocate from a truly incisive one — it is the mechanism by which case law evolves, statutory interpretation proceeds, and factual narratives become coherent. Understanding how to approach these questions systematically will not only elevate your LSAT score but also build a foundation for the kind of reasoning you will employ throughout law school and legal practice.

SECTION 2

Core Principles & Definitions

Before diving into strategy, it is essential to establish a precise vocabulary for the logical architecture of these questions. A contradiction in the LSAT context is not a formal logical contradiction in the strict philosophical sense (P ∧ ¬P); rather, it is an apparent paradox — two claims that, given unstated background assumptions, seem difficult to reconcile. The correct answer choice introduces a piece of information that, once integrated into the reasoning, makes the coexistence of both claims perfectly intelligible. Understanding this structure is the key to mastering these questions with consistency.

Identify the Apparent Conflict

Pinpoint the two specific claims, facts, or findings within the passage that appear to be in tension. Articulate the conflict explicitly before looking at answer choices.

Locate the Hidden Assumption

The conflict exists only because an unstated assumption makes the two claims seem incompatible. Identifying this assumption clarifies what kind of information would dissolve the paradox.

Accept Both Claims as True

Never challenge the truth of either claim. The question assumes both are factually correct. Your task is to explain how they coexist, not to undermine either one.

Seek the Bridging Information

The correct answer provides a new fact, distinction, or mechanism that serves as a logical bridge between the two claims. It must account for both, not just one.

Eliminate Irrelevant Answers

Wrong answers often address only one claim, introduce new contradictions, or are topically related but logically inert. Each must be tested against the specific tension identified.

✦

KEY TAKEAWAY

Think of a resolve-a-contradiction question as diagnosing a patient with two seemingly conflicting symptoms. A good diagnostician does not deny either symptom; instead, she identifies a single underlying condition that explains both. Similarly, the correct answer choice is the 'diagnosis' — the one piece of information that makes both apparently conflicting facts symptoms of a coherent, unified reality.

SECTION 3

Visual Explanation — Anatomy of a Contradiction

This diagram illustrates the full anatomy of a resolve-a-contradiction question. Claim A (blue) and Claim B (pink) appear to conflict because of a hidden assumption (amber). The correct answer (green) bridges both claims by undermining the hidden assumption, while incorrect answers fail for specific, identifiable reasons (purple).

The diagram above captures the essential logic at work in every resolve-a-contradiction question. Notice that the apparent conflict exists not because the two claims are genuinely incompatible but because a hidden assumption — an unstated premise lurking in the background — makes them seem so. In the example, the hidden assumption is that rising sales volume necessarily entails rising revenue. The correct answer undermines that assumption by introducing a price reduction significant enough to erode revenue despite higher unit sales. This is the pattern you will see repeated across every iteration of this question type: the bridge answer always targets the hidden assumption, never the claims themselves.

SECTION 4

The Logical Mechanism — How Contradictions Arise and Dissolve

To understand why resolve-a-contradiction questions work the way they do, it helps to formalize the logical structure. Every apparent paradox on the LSAT can be modeled as a three-part structure: two accepted propositions and an implicit conditional that makes them seem incompatible. When the correct answer choice is introduced, it functions as a defeater for the implicit conditional, thereby dissolving the perceived tension. This is not unlike the concept of a rebutting or undercutting defeater in epistemology — the new information does not deny either proposition but rather removes the inferential link that made them seem contradictory.

Formal Structure of an LSAT Apparent Paradox

THE PARADOX STRUCTURE

P₁ (Claim A is true) ∧ P₂ (Claim B is true) ∧ [P₁ → ¬P₂] (Hidden Assumption)

P₁ = first stated fact; P₂ = second stated fact; the bracketed conditional is the unstated assumption that creates the illusion of incompatibility. Because P₁ → ¬P₂ is assumed, the conjunction P₁ ∧ P₂ appears impossible.

THE RESOLUTION MECHANISM

D (Defeater) → ¬[P₁ → ¬P₂] ∴ P₁ ∧ P₂ ∧ D is consistent

D = the correct answer choice (the defeater). By negating or undermining the hidden conditional, D restores logical consistency. Both P₁ and P₂ remain true; only the background assumption is neutralized.

This formalization clarifies an important strategic point: the correct answer never challenges the truth of either claim. It operates exclusively at the level of the implicit conditional. This is why test-takers who approach these questions by trying to weaken one of the claims consistently select wrong answers. The discipline of accepting both claims as given and searching for the hidden link between them is the single most important mental habit for this question type.

Common Categories of Hidden Assumptions

Scope confusion: The assumption that what is true of a whole is true of its parts, or vice versa. Resolution often involves showing that the two claims apply to different subgroups or time periods.
Causal oversimplification: The assumption that a single factor determines the outcome. Resolution introduces a confounding variable or an intervening mechanism.
Definitional ambiguity: The assumption that a key term means the same thing in both claims. Resolution reveals that the term is being used in two different senses.
Proportional reasoning error: The assumption that a rate or percentage translates directly into an absolute quantity. Resolution clarifies the base rate or denominator.

SECTION 5

Recognizing and Classifying Resolve-a-Contradiction Stems

Before you can apply the resolution strategy, you must first recognize when a question is asking you to resolve a contradiction. The LSAT uses a range of question stem formulations, and not all of them contain the word "contradiction" or "paradox." Developing fluency with these stems ensures you activate the correct reasoning framework immediately, saving precious time on test day. Below is a classification of the most common stem variations, organized by their degree of explicitness.

This flowchart guides you from reading the question stem to activating the correct resolution strategy. Explicit stems (green) use words like "paradox" or "discrepancy," while implicit stems (cyan) ask what "explains" or "accounts for" a finding. Both converge on the same three-step strategic response (amber).

Stem Type	Example Phrasing	Key Signal Words
Explicit — Paradox	"Which of the following, if true, most helps to resolve the apparent paradox described above?"	resolve, paradox, apparent contradiction
Explicit — Discrepancy	"Which of the following, if true, most helps to explain the discrepancy described above?"	explain, discrepancy, reconcile
Implicit — Finding	"Which of the following, if true, most helps to account for the researchers' finding?"	account for, finding, surprising result
Implicit — Explanation	"Each of the following, if true, contributes to an explanation of the situation described EXCEPT:"	contributes to an explanation, EXCEPT

Common question stem formulations for resolve-a-contradiction items

SECTION 6

Worked Example — Step-by-Step Resolution

ℹ

STIMULUS

A city recently installed energy-efficient LED streetlights to replace older sodium-vapor lamps, expecting a significant reduction in electricity costs. However, the city's total electricity expenditure for street lighting increased in the year following the installation. Which of the following, if true, most helps to resolve the apparent paradox? (A) LED streetlights have a longer operational lifespan than sodium-vapor lamps. (B) The city simultaneously expanded its road network by 60%, requiring the installation of many additional streetlights. (C) Several neighboring cities that installed LED streetlights saw their electricity costs decrease. (D) The manufacturer of the LED streetlights also produces sodium-vapor lamps. (E) Some residents complained that the LED streetlights produced a harsher quality of light.

Resolving the LED Streetlight Paradox

1
Step 1 — Identify the Two Claims

Claim A: The city replaced old streetlights with energy-efficient LEDs, which consume less electricity per unit. Claim B: The city's total electricity expenditure for street lighting increased. These two facts seem to pull in opposite directions — efficiency should reduce costs, yet costs rose.

Tension: efficiency ↑ but costs ↑
2
Step 2 — Articulate the Hidden Assumption

The paradox hinges on the unstated assumption that the total number of streetlights remained constant. If the number of lights did not change, then replacing each light with a more efficient model should lower overall electricity costs. This assumption bridges Claim A to the expected (but not actual) outcome.

Hidden assumption: number of streetlights unchanged
3
Step 3 — Evaluate Answer Choices Against the Hidden Assumption

(A) addresses longevity, not electricity cost — irrelevant to the current-year expenditure paradox. (C) describes other cities, which is tangential and, if anything, deepens the paradox. (D) concerns the manufacturer, not the electricity usage. (E) addresses light quality, not cost. None of these undermine the hidden assumption.

Eliminated: A, C, D, E
4
Step 4 — Confirm the Correct Answer

(B) states that the city expanded its road network by 60%, requiring many additional streetlights. This directly undermines the hidden assumption that the number of streetlights remained constant. Even though each individual LED uses less electricity, the dramatic increase in the total number of lights more than offsets the per-unit savings, explaining why total expenditure rose despite improved efficiency.

Correct Answer: (B)

🔍

PATTERN RECOGNITION

This example illustrates one of the most common paradox patterns on the LSAT: the rate-versus-total discrepancy. A rate improves (energy efficiency per light), but a total worsens (overall electricity cost) because the base quantity changed. Whenever you see a paradox involving rates, percentages, or averages conflicting with totals, immediately ask: did the underlying population or quantity change?

SECTION 7

Taxonomy of Wrong Answer Choices

Understanding why wrong answers are wrong is just as important as understanding why the correct answer is right. The LSAT systematically constructs incorrect choices to exploit predictable reasoning errors. By developing a taxonomy of these traps, you can rapidly eliminate tempting but flawed options and maintain accuracy under time pressure. The table below categorizes the five most common wrong-answer archetypes for resolve-a-contradiction questions, along with the cognitive error each exploits.

Wrong Answer Type	Description	Why It Fails
One-Sided	Supports or explains only one of the two claims, ignoring the other.	A resolution must account for the coexistence of both claims, not just strengthen one.
Paradox Deepener	Introduces information that makes the contradiction even more surprising.	Moves in the wrong direction entirely — amplifies rather than dissolves the tension.
Topically Adjacent	Relates to the same subject matter but does not address the specific logical tension.	Being on-topic is not sufficient; the answer must be logically operative on the exact conflict.
Scope Shifter	Addresses a different time period, population, or context than the one in the stimulus.	Information outside the stimulus's scope cannot resolve a tension within that scope.
Claim Denier	Implicitly undermines the truth of one of the two claims rather than reconciling them.	The question assumes both claims are true; denying one does not resolve — it dissolves — the premise.

Five archetypes of incorrect answer choices in resolve-a-contradiction questions

🎯

ELIMINATION STRATEGY

Think of incorrect answer choices as tools designed for the wrong job. A one-sided answer is like using only half a bridge — it reaches toward the other side but never connects. A paradox deepener is like widening the gap instead of spanning it. Train yourself to classify each wrong answer by its specific failure mode, and elimination becomes almost mechanical.

SECTION 8

Connections to Related Question Types & Advanced Applications

Resolve-a-contradiction questions share structural DNA with several other LSAT question types, and understanding these relationships deepens your command of the test as a whole. The skill of identifying hidden assumptions, for instance, is central to both necessary assumption and sufficient assumption questions. Similarly, the ability to evaluate how new information affects an argument's coherence connects directly to strengthen and weaken questions. The table below maps these relationships explicitly.

Question Type	Shared Skill	Key Difference
Resolve a Contradiction	Identify hidden assumptions; evaluate new information	Both claims accepted as true; new info reconciles them
Strengthen	Evaluate how new information affects an argument	Conclusion is present; new info makes it more likely
Weaken	Evaluate how new information affects an argument	Conclusion is present; new info makes it less likely
Necessary Assumption	Identify unstated premises essential to the reasoning	Correct answer is a premise the argument requires to hold
Sufficient Assumption	Identify unstated premises; bridge gaps in reasoning	Correct answer, if added, guarantees the conclusion

How resolve-a-contradiction relates to other LSAT question types

At a more advanced level, resolve-a-contradiction questions in the Reading Comprehension section (as opposed to Logical Reasoning) add an additional layer of complexity. In Reading Comprehension, the contradiction may be embedded within a longer passage, requiring you to synthesize information across multiple paragraphs. The two conflicting claims may be presented by different authors in a comparative reading set, or they may emerge from the tension between empirical data and a theoretical framework described in the passage. In these contexts, the correct answer is typically drawn from information already present in the passage rather than introduced as a hypothetical — making close reading and passage mapping even more critical. The fundamental logic, however, remains identical: accept both claims, find the hidden assumption, and identify the information that neutralizes it.

SECTION 9

Practice Problems

Question 1: CONCEPTUAL

In a resolve-a-contradiction question, the correct answer choice must do which of the following? (a) Undermine the truth of one of the two conflicting claims. (b) Provide information that makes both claims simultaneously plausible. (c) Strengthen the argument's conclusion. (d) Identify a flaw in the passage's reasoning.

Show answer

The correct answer is (b). In a resolve-a-contradiction question, both claims are accepted as true, so the correct answer must provide information that explains how they can coexist. Option (a) is incorrect because these questions never challenge the truth of either claim. Option (c) describes a strengthen question, not a resolution question. Option (d) describes a flaw question. The defining feature of a resolution question is that new information reconciles an apparent tension without denying either side of it.

Question 2: BASIC CALCULATION

Stimulus: A company reports that employee satisfaction scores rose by 20% this year. Yet the company also reports that voluntary turnover — employees choosing to leave — increased by 35% over the same period. Which of the following, if true, most helps to resolve this apparent discrepancy? (a) The company hired a new HR director this year. (b) The company's competitors offered significantly higher salaries this year. (c) Employee satisfaction surveys were conducted anonymously. (d) The company expanded its workforce by 50% this year.

Show answer

The correct answer is (b). The hidden assumption is that satisfied employees would not voluntarily leave. However, if competitors offered significantly higher salaries, even employees who were more satisfied with their current workplace might leave for financial reasons. This explains how satisfaction can rise while turnover also increases: the external pull factor (higher salaries elsewhere) outweighs the internal push factor (satisfaction). Option (d) is tempting because it introduces a population change, but a larger workforce alone does not explain why a higher percentage of employees chose to leave — it would need to show that new hires are more likely to leave, which it does not.

Question 3: INTERMEDIATE

Stimulus: A wildlife preserve that banned all hunting within its borders five years ago expected deer populations to increase. However, a recent census shows that deer populations have actually declined by 15%. Which of the following, if true, most helps to resolve the apparent paradox? (a) The hunting ban was widely supported by environmental groups. (b) The ban on hunting also eliminated the culling of the deer's primary predator, the wolf, whose population has since tripled. (c) Deer populations in neighboring areas that still permit hunting have remained stable. (d) The preserve has adequate vegetation to support a larger deer population. (e) Some visitors to the preserve have reported seeing fewer deer on recent trips.

Show answer

The correct answer is (b). The hidden assumption is that removing hunting — a source of deer mortality — should increase deer numbers. However, the ban also removed the culling of wolves, a natural predator. The tripling of the wolf population introduces a far more significant source of deer mortality than hunting ever was, explaining the decline. This is a classic example of the 'unintended consequence' pattern: an intervention that was expected to help actually triggered a secondary effect that overwhelmed the intended benefit. Options (c) and (e) merely restate or confirm the paradox without resolving it, (a) is irrelevant to population dynamics, and (d) actually deepens the paradox by removing food scarcity as an explanation.

Question 4: APPLIED

Stimulus (comparative reading context): Passage A argues that standardized testing is a reliable predictor of college success, citing studies showing strong correlations between test scores and first-year GPA. Passage B notes that many colleges that dropped standardized testing requirements saw no decline — and in some cases an improvement — in average first-year student GPA. Which of the following, if true, most helps to resolve the apparent tension between the two passages? (a) Standardized tests measure skills that are also developed in college courses. (b) Colleges that dropped testing requirements simultaneously increased their reliance on high school GPA, extracurricular achievements, and personal essays in admissions — factors also predictive of college success. (c) Some students perform poorly on standardized tests due to test anxiety. (d) The colleges that dropped testing requirements are primarily small liberal arts institutions. (e) Average standardized test scores have been declining nationally.

Show answer

The correct answer is (b). The hidden assumption creating the tension is that without standardized tests, colleges lack a reliable mechanism for identifying students likely to succeed. Answer choice (b) undermines this assumption by showing that these colleges replaced standardized testing with other admissions criteria that are themselves strong predictors of college performance. This explains how both passages can be correct: standardized tests do predict college success (Passage A), but so do the alternative criteria these colleges adopted (Passage B), meaning the removal of tests did not eliminate predictive accuracy from the admissions process. Option (c) explains some individual variation but does not account for the institutional-level finding. Option (d) introduces a scope distinction but does not explain why GPAs were maintained.

Question 5: CRITICAL THINKING

Consider the following stimulus: A pharmaceutical company's clinical trial found that patients who took Drug Y reported significantly fewer headaches than those in the placebo group. However, biochemical analysis revealed that Drug Y has no measurable effect on any known headache-related neurological pathway. A critic argues that this result proves the clinical trial was flawed. Construct an explanation that resolves the apparent contradiction between the clinical trial's results and the biochemical analysis without challenging the validity of either finding. Then explain why the critic's conclusion does not necessarily follow from the two findings.

Show answer

One resolution is that Drug Y affects headache frequency through an indirect mechanism not captured by the biochemical analysis of known headache-related pathways. For instance, Drug Y might reduce stress hormones, improve sleep quality, or lower blood pressure — factors that influence headache occurrence but are not part of the specific neurological pathways examined. The biochemical analysis is correct that Drug Y does not interact with known headache pathways, and the clinical trial is correct that patients experienced fewer headaches. Both findings are true; they only appear contradictory under the hidden assumption that all headache-relevant mechanisms are already known and included in the biochemical analysis. The critic's conclusion — that the trial was flawed — does not follow because there is a third possibility: the trial measured a genuine effect operating through an unexamined mechanism. This illustrates an important general principle for resolve-a-contradiction questions: the space of possible explanations is always larger than what the stimulus explicitly considers, and the correct resolution exploits precisely that gap.

SUMMARY

Lesson Summary

Summary

Resolve-a-contradiction questions present two claims that appear mutually exclusive and ask you to identify information that makes both simultaneously plausible. The key to these items is understanding that the conflict is apparent, not genuine — it arises from a hidden assumption that makes the two claims seem incompatible. Your task is never to deny either claim but to find the bridging information that neutralizes the hidden assumption, restoring logical consistency.

The systematic approach involves three steps: identify the two conflicting claims, articulate the hidden assumption that generates the tension, and select the answer that undermines that assumption. Common wrong-answer traps include one-sided answers that address only one claim, paradox deepeners that worsen the contradiction, and topically adjacent options that relate to the subject matter without addressing the logical tension. Mastering this question type builds a foundational reasoning skill — reconciling seemingly conflicting evidence — that will serve you throughout law school and legal practice.