What Is Critical Reasoning on the GMAT?
Critical Reasoning (CR) is the section of the GMAT Verbal that tests your ability to analyze arguments, identify assumptions, and evaluate evidence. It's a key differentiator in your Verbal score, requiring logical precision rather than memorized facts.
What Is Critical Reasoning?
Critical Reasoning questions present a short argument (usually 3-5 sentences) followed by a question. You must analyze the argument's structure, spot its underlying assumption, and determine which answer choice strengthens, weakens, or explains it. The GMAT tests this to see if you can think logically and critically—skills essential for business leadership.
Why It Matters on the GMAT
CR typically accounts for about 10-12 of the 36 Verbal questions, making it roughly one-third of your Verbal score. It's also a learnable section: unlike Reading Comprehension, which relies on absorbing long passages, CR is about applying a consistent method to short arguments. Mastering CR can significantly boost your Verbal score, which is crucial for a competitive overall GMAT score.
A Concrete Example
Consider this argument: "The city's new bike-share program will reduce traffic congestion because more people will choose bikes over cars."
A typical question: "Which of the following, if true, most strengthens the argument?"
An answer choice like "The bike-share program includes a large network of dedicated bike lanes" strengthens it by addressing a potential obstacle. A choice like "Most car commuters live too far from bike stations to use them" would weaken it. This example shows how CR tests your ability to connect evidence to conclusion.
Common Mistakes
- Reading too fast: Missing key words like "some," "most," or "only" can flip the logic.
- Bringing outside knowledge: CR is self-contained—use only the information in the argument.
- Confusing strengthen/weaken with conclusion: Sometimes a question asks for the conclusion, not an assumption. Read the question stem carefully.
- Choosing extreme answer choices: Words like "all" or "never" are often wrong unless the argument is equally extreme.
How to Practice It
Start by identifying the conclusion and premises in every argument you read. Then, practice finding the assumption—the unstated link that must be true for the argument to work. Use official GMAT questions and drill by question type (assumption, strengthen, weaken, evaluate, etc.). Timed practice is key: aim for about 2 minutes per CR question. Review every answer choice, even the correct one, to understand why the others are wrong.
For deeper help, see our guide on identifying conclusions.