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LSAT Available Fall 2026

LSAT^® Logical Reasoning

The LSAT Logical Reasoning course trains students to dissect argument structures, apply conditional logic, spot flaws, and evaluate assumptions, enabling precise answers to strengthen or weaken questions.

Who Should Take This

Ideal candidates are pre‑law students, recent graduates, or professionals transitioning to legal careers who have basic reading comprehension skills but need systematic practice mastering LSAT logical reasoning. They aim to boost their score, sharpen analytical thinking, and confidently tackle every argument‑based question on the exam.

What's Included in AccelaStudy® AI

Adaptive Knowledge Graph

Practice Questions

Lesson Modules

Console Simulator Labs

Exam Tips & Strategy

20 Activity Formats

Course Outline

78 learning goals

1 Argument Structure Analysis

8 topics

Identify the main conclusion of an argument when it is explicitly stated, even when the conclusion appears at the beginning, middle, or end of the stimulus.

Identify the main conclusion of an argument when it is unstated or must be inferred from the relationship among the explicit statements in the stimulus.

Distinguish premises from conclusions using indicator words (therefore, because, since, thus, hence, consequently) and contextual reasoning when no indicators are present.

Identify intermediate conclusions that serve as both a conclusion supported by premises and a premise supporting the main conclusion within multi-layered arguments.

Determine the specific role a given statement plays in an argument, such as premise, counterargument, concession, background context, or evidence cited in support of an intermediate conclusion.

Classify the method of reasoning an argument employs, such as analogy, counterexample, reductio ad absurdum, appeal to authority, or elimination of alternatives.

Evaluate whether two arguments share the same abstract reasoning structure by mapping premises and conclusions to their logical roles and comparing the resulting patterns.

Recognize when an argument contains a counterargument or concession and determine how the author responds to or incorporates the opposing viewpoint into the overall argument.

2 Conditional and Formal Logic

8 topics

Identify conditional (if-then) relationships in natural language and correctly distinguish the sufficient condition from the necessary condition in each statement.

Apply the contrapositive transformation to conditional statements and recognize that denying the necessary condition validly allows denying the sufficient condition.

Translate unless, until, without, only if, and except into standard conditional form and derive their contrapositives accurately.

Identify biconditional relationships (if and only if) and recognize when two conditional statements combine to form a biconditional that triggers in both directions.

Construct and traverse multi-step conditional chains by linking the necessary condition of one statement to the sufficient condition of another to derive valid inferences.

Distinguish valid conditional inferences (affirming the antecedent, denying the consequent) from invalid ones (affirming the consequent, denying the antecedent) in LSAT arguments.

Interpret quantified statements involving some, most, all, none, and not all, and determine what valid inferences can be drawn when quantified statements are combined.

Evaluate arguments that combine conditional and quantified reasoning, identifying when a conclusion about all members of a group is invalidly drawn from premises about some members.

3 Flaw Identification

16 topics

Identify when an argument commits the flaw of treating a sufficient condition as a necessary condition or vice versa within conditional reasoning chains.

Recognize when an argument mistakes a correlation or co-occurrence between two phenomena for a causal relationship without ruling out alternative explanations.

Identify the flaw of equivocation, where an argument uses the same word or phrase in two different senses to create an illusion of logical connection between premises and conclusion.

Recognize the part-to-whole and whole-to-part fallacies, where properties of individual members are wrongly attributed to the group or properties of the group to individuals.

Identify the false dichotomy flaw, where an argument presents only two options as if they are exhaustive when other possibilities exist that the argument ignores.

Recognize circular reasoning, where the conclusion of an argument is essentially restated as a premise, providing no independent support for the claim.

Identify the straw man fallacy, where an argument misrepresents or distorts an opponent's position and then attacks the distorted version rather than the actual argument.

Recognize ad hominem reasoning, where an argument attacks the character, motives, or circumstances of a person making a claim rather than addressing the substance of the claim itself.

Identify appeals to inappropriate authority, where an argument invokes an authority figure whose expertise is irrelevant to the claim being supported or whose testimony is unreliable.

Recognize sampling errors and hasty generalizations, where a conclusion about a population is drawn from an unrepresentative, biased, or insufficiently large sample.

Identify the appeal to ignorance flaw, where an argument concludes that something is true because it has not been proven false, or false because it has not been proven true.

Recognize the slippery slope fallacy, where an argument asserts without justification that one event will inevitably lead to a chain of increasingly extreme consequences.

Identify when an argument confuses a claim that is necessary for a conclusion with one that is sufficient to guarantee it, particularly in policy and recommendation arguments.

Apply the abstract flaw descriptions given in LSAT answer choices to the specific reasoning error in a stimulus, matching formal language to concrete argument patterns.

Evaluate arguments containing multiple simultaneous flaws, determining which flaw is most central to the argument's failure and best matches the question's answer choices.

Distinguish between an argument that is flawed in its reasoning and one that merely has questionable premises, recognizing that flaw questions target logical structure rather than factual accuracy.

4 Assumption Identification

6 topics

Distinguish between necessary assumptions (required for the conclusion to hold) and sufficient assumptions (which if true guarantee the conclusion) in LSAT arguments.

Apply the negation test to evaluate necessary assumption answer choices by negating each choice and determining whether the negation destroys the argument's conclusion.

Identify the gap between an argument's premises and conclusion that a necessary assumption must bridge, focusing on terms or concepts in the conclusion not addressed by the premises.

Determine the sufficient assumption that, when added to the premises, logically guarantees the conclusion, often by supplying a missing conditional link in the argument's chain.

Recognize defender assumptions that protect the argument from potential objections without directly supporting the conclusion, such as ruling out alternative causes or exceptions.

Evaluate whether an assumption answer choice is too strong (going beyond what is necessary) or too narrow (failing to fully bridge the premise-conclusion gap) for the argument.

5 Strengthen and Weaken Questions

6 topics

Identify the conclusion and the evidential gap in an argument to determine what type of additional information would strengthen or weaken the reasoning.

Determine which answer choice most strengthens a causal argument by ruling out alternative causes, establishing a mechanism, or providing additional correlational support.

Determine which answer choice most weakens a causal argument by introducing an alternative cause, showing a broken mechanism, or presenting a counterexample to the claimed effect.

Evaluate the relevance of strengthen/weaken answer choices by distinguishing information that affects the argument's core logical connection from information that is tangential or out of scope.

Apply strengthen/weaken reasoning to arguments based on analogy, determining what similarities or differences between the compared cases affect the argument's persuasiveness.

Interpret evaluate-the-argument questions that ask which piece of information would be most useful to know, determining how each answer choice could either strengthen or weaken the argument depending on its value.

6 Inference and Must Be True

6 topics

Distinguish between what must be true, what could be true, and what is merely likely based on a set of given statements, applying strict deductive standards to inference questions.

Derive valid inferences by combining two or more conditional statements from a stimulus, linking chains of sufficient and necessary conditions to reach conclusions not explicitly stated.

Determine what must be true when given quantified premises involving some, most, and all, correctly applying rules about combining quantified statements to generate valid inferences.

Identify the answer choice that is most strongly supported by the stimulus, distinguishing between choices fully proven by the text and those that go beyond the given information.

Evaluate inference answer choices for overreach errors, recognizing when a choice introduces new terms, makes unwarranted comparisons, or extends the scope beyond the stimulus premises.

Synthesize information from multiple parts of a stimulus that appear unrelated, identifying hidden connections that support a single inference tying disparate facts together.

7 Parallel Reasoning

4 topics

Categorize the abstract structure of an argument by identifying its type (conditional, causal, analogical, statistical) and the logical relationship between its premises and conclusion.

Map the logical structure of a stimulus argument onto answer choices to find the one that shares the same pattern of reasoning, ignoring surface-level topic similarities.

Identify the answer choice that contains reasoning most similar in its flaw to the flawed reasoning in the stimulus, matching the type of error rather than the subject matter.

Apply efficient elimination strategies for parallel reasoning questions by first checking conclusion type, then premise count, then logical structure to narrow answer choices rapidly.

8 Principle Questions

4 topics

Identify the general principle that underlies a specific argument or situation described in the stimulus, abstracting from concrete details to a rule applicable across cases.

Apply a stated general principle to a new specific situation to determine which outcome or action the principle supports, justifies, or requires.

Determine which principle most helps justify an argument's reasoning, functioning as a bridge between the argument's premises and its conclusion at a general level.

Evaluate whether a principle stated in a stimulus is correctly applied in each answer choice scenario, checking that all conditions of the principle are satisfied before the conclusion follows.

9 Resolve the Paradox and Explain

4 topics

Identify the apparent contradiction or surprising result presented in a paradox stimulus by articulating why the two facts seem inconsistent on their surface.

Determine which answer choice best resolves an apparent paradox by providing additional information that explains how both seemingly contradictory facts can be simultaneously true.

Evaluate why incorrect answer choices in paradox questions fail to resolve the discrepancy, identifying choices that address only one side, introduce new paradoxes, or are irrelevant.

Apply resolution strategies to paradoxes involving statistical or survey data, where the explanation often involves a confounding variable, selection bias, or rate-vs-count distinction.

10 Point at Issue and Agree/Disagree

3 topics

Identify the specific claim on which two speakers disagree by finding the proposition that one speaker would affirm and the other would deny based on their stated positions.

Determine the point on which two speakers agree by identifying a proposition that both speakers' statements commit them to accepting, even if not explicitly stated by both.

Evaluate point-at-issue answer choices by applying the speaker commitment test: verifying that each speaker has actually committed to a position on the claim, not merely discussed the topic.

11 Causal Reasoning

4 topics

Recognize the standard causal reasoning pattern where an argument claims that one event causes another based on correlation, temporal sequence, or co-occurrence evidence.

Identify the five primary ways to weaken a causal argument: alternative cause, reverse causation, coincidence, common cause, and the effect occurring without the alleged cause.

Determine the most effective way to strengthen a causal argument by eliminating alternative causes, demonstrating a mechanism, or showing the effect disappears when the cause is removed.

Assess complex causal chains where an argument claims A causes B causes C, identifying which link in the chain is weakest and most vulnerable to challenge.

12 Question Type Recognition and Strategy

5 topics

Classify LSAT Logical Reasoning questions into their correct type (flaw, assumption, strengthen, weaken, inference, parallel, principle, paradox, role, method) by analyzing the question stem language.

Determine the appropriate reading strategy for each question type, deciding whether to read the stimulus for its argument structure, for its stated facts, or for a specific claim before examining answer choices.

Apply systematic answer elimination techniques, including identifying extreme language, scope shifts, and irrelevant comparisons that reliably signal incorrect answer choices across question types.

Formulate a prediction of the correct answer before reading the answer choices, using question-type-specific anticipation strategies to avoid being misled by attractive wrong answers.

Assess time management strategies for Logical Reasoning, including recognizing question difficulty levels, deciding when to skip and return, and allocating time across the section for maximum score.

13 Evidence and Argumentation Patterns

4 topics

Distinguish between arguments that use evidence to support a conclusion and arguments that use evidence to explain a phenomenon, recognizing how this distinction affects the correct answer type.

Interpret arguments by analogy, identifying the source case, the target case, the relevant shared properties, and the conclusion being drawn from the comparison.

Evaluate the strength of statistical evidence in arguments by assessing sample size adequacy, representativeness, rate-versus-count distinctions, and percentage-versus-absolute-number confusions.

Assess arguments that rely on expert testimony or survey data, determining when the source's reliability, the question's framing, or the respondents' knowledge undermines the evidence's value.

Scope

Included Topics

All question types appearing in the LSAT Logical Reasoning section: argument structure, flaw identification, strengthen/weaken, assumption (necessary and sufficient), inference/must-be-true, parallel reasoning, principle application, resolve-the-paradox, and point-at-issue/agree-disagree questions.
Formal and informal logic as tested on the LSAT: conditional reasoning (if-then, contrapositives, biconditionals), translations of unless/until/without/only-if, quantified statements (some/most/all/none), and logical equivalence.
Named argument flaws: sufficient-necessary confusion, correlation-causation, part-whole and whole-part fallacies, equivocation, ad hominem, appeal to authority, appeal to ignorance, sampling errors, hasty generalization, false dichotomy, circular reasoning, straw man, appeal to emotion, and slippery slope.
Argument structure analysis: identifying conclusions (main and intermediate), premises, background information, counterarguments, subsidiary conclusions, and the role of specific statements within an argument.
Assumption identification strategies: the negation test for necessary assumptions, the sufficient assumption test, bridging assumptions that connect disparate premise sets, and recognizing unstated evidence gaps.
Evidence evaluation: relevance of evidence to conclusions, strength and weakness of analogical reasoning, statistical evidence interpretation, and the distinction between evidence and explanation.
Reasoning patterns: deductive vs. inductive reasoning, arguments by analogy, causal reasoning chains, means-end reasoning, and principle-based reasoning.

Not Covered

Formal symbolic logic notation (truth tables, predicate calculus, modal logic) beyond the conditional translations tested on the LSAT.
Analytical Reasoning (Logic Games) setup, diagramming, and game-type classification, which are covered in a separate domain specification.
Reading Comprehension passage analysis, comparative reading, and passage-structure mapping, which are covered in a separate domain specification.
LSAT Writing section content and essay evaluation criteria.
Law school admissions procedures, GPA considerations, and application strategy unrelated to LSAT reasoning skills.
Philosophical logic, epistemology, and formal argumentation theory beyond the scope of LSAT question patterns.