HESI A2 Critical Thinking Questions: How to Tackle the Hardest Questions on the Exam [2026]

Every HESI A2 section contains questions that go beyond simple recall. These critical thinking questions — which ask you to analyze, infer, apply, and evaluate — are the ones that separate 80% scores from 90%+ scores. The good news? Critical thinking is a skill, not a talent, and you can train it systematically.

In this guide, we'll break down exactly what critical thinking looks like on the HESI A2, show you real question patterns, and give you actionable strategies to tackle them with confidence.

What Are "Critical Thinking" Questions on the HESI A2?

The HESI A2 doesn't have a standalone "critical thinking" section, but every section contains higher-order questions that require more than memorization. These questions typically fall into four cognitive levels:

Roughly 30–40% of HESI A2 questions fall into the application, analysis, or evaluation categories. These are the questions students most commonly miss — and the ones where targeted practice makes the biggest difference.

Where Critical Thinking Questions Appear Most

While every section has them, some sections are heavier on critical thinking than others:

Reading Comprehension (Highest Density)

This section is almost entirely critical thinking. You'll be asked to:

• Identify the main idea — not just what the passage says, but what it's primarily about
• Make inferences — draw conclusions the author implies but doesn't state directly
• Determine author's purpose — why was this passage written?
• Distinguish fact from opinion — is the statement verifiable or subjective?
• Evaluate logical arguments — does the evidence support the conclusion?

Science Sections (Biology, Chemistry, A&P)

Science questions often present a scenario and ask you to apply what you know:

• "If enzyme X is inhibited, what happens to process Y?"
• "A patient has elevated white blood cell count. Which condition is most consistent?"
• "Given this chemical equation, what type of reaction occurred?"

Mathematics

Word problems are the critical thinking questions of the math section. They require you to:

• Extract relevant numbers from a paragraph of context
• Determine which operation to use
• Convert units before calculating

Vocabulary & Grammar

Even these "straightforward" sections have context-dependent questions: "Which word best fits the meaning of the underlined word as used in this sentence?"

The 5-Step Critical Thinking Framework for the HESI A2

Use this systematic approach for any question that feels tricky:

Step 1: Read the Question Stem First

Before reading a passage or scenario, read the question. This tells your brain what to look for. If the question asks "What is the author's primary purpose?", you'll read the passage differently than if it asks "What does the word 'benign' mean in paragraph 2?"

Step 2: Identify What Type of Thinking Is Required

Ask yourself: "Am I being asked to recall, apply, analyze, or evaluate?" This determines your approach:

• Recall: Search your memory or the passage for a direct fact
• Apply: Take a known concept and use it in the given scenario
• Analyze: Look for cause-effect relationships, comparisons, or patterns
• Evaluate: Weigh multiple plausible answers and pick the strongest

Step 3: Eliminate Absolutes First

Answer choices containing words like "always," "never," "all," or "none" are usually wrong on critical thinking questions. Biology and medicine are full of exceptions, so absolute statements rarely hold up.

Similarly, be cautious of answer choices that are too extreme or too narrow. The HESI A2 tends to favor balanced, nuanced answers.

Step 4: Use Process of Elimination (POE) Aggressively

Don't just look for the right answer — actively eliminate wrong ones. For each option, ask:

• Is this directly contradicted by the passage or known facts?
• Is this true but doesn't answer this specific question?
• Is this a common misconception the test is testing?
• Is this too broad or too narrow for the question?

Even if you can't identify the right answer immediately, eliminating 2 options gives you a 50% chance instead of 25%.

Step 5: Choose the "Most Correct" Answer

Critical thinking questions often have two answers that seem right. When this happens:

• Pick the one most directly supported by evidence (not assumptions)
• Pick the one that's most complete (addresses all parts of the question)
• Pick the one that's most specific without being too narrow
• When in doubt, the answer that requires fewer logical leaps is usually correct

Section-Specific Critical Thinking Strategies

Reading Comprehension: The Passage Is Always Right

The #1 mistake students make in reading comprehension is bringing in outside knowledge. On the HESI A2:

• The passage is your only source of truth. Even if you know something about the topic, answer based solely on what the passage states or implies.
• For inference questions: The correct answer is always one small logical step from the text. If an answer requires a big leap, it's wrong.
• For "main idea" questions: The correct answer covers the entire passage, not just one paragraph. If a choice describes only one section, it's a detail, not the main idea.

Science: Build Concept Maps, Not Flash Cards

Critical thinking in science requires understanding relationships between concepts, not isolated facts. For example:

• Don't just memorize "the mitral valve is between the left atrium and left ventricle"
• Understand: "If the mitral valve malfunctions → blood backs up into the left atrium → pressure increases in pulmonary veins → fluid accumulates in lungs → pulmonary edema"

This chain of reasoning is exactly what application and analysis questions test. Build concept maps that connect systems, causes, and effects.

Math: Translate Words to Equations

For word problems, develop a systematic translation process:

1. Read the entire problem once for context
2. Re-read and underline all numbers and units
3. Identify what you're solving for
4. Write the equation before calculating
5. Check: does my answer make sense in context?

The "sense check" in step 5 catches most errors. If a dosage calculation gives you 500 mL for a single injection, something went wrong — that critical thinking awareness can save your score.

Common Critical Thinking Traps (And How to Avoid Them)

Trap 1: The "Sounds Medical" Trap

One answer choice uses impressive medical terminology that sounds correct but doesn't actually answer the question. Fix: Always go back to the question stem. Does this answer address what was specifically asked?

Trap 2: The "True But Irrelevant" Trap

An answer choice is a factually true statement, but it doesn't relate to the question or passage. Fix: A correct answer must be both true AND responsive to the specific question.

Trap 3: The "Extreme Answer" Trap

One option uses dramatic language ("completely eliminates," "the only cause," "will always result in"). Fix: In healthcare and biology, few things are absolute. Moderate answers are usually safer.

Trap 4: The "Overthinking" Trap

You read so deeply into the question that you choose a creative but unsupported answer. Fix: Stick to the simplest interpretation. The HESI A2 tests nursing readiness, not philosophical reasoning.

Practice Critical Thinking Daily

Critical thinking improves with deliberate practice. Here's a 10-minute daily routine:

1. Do 5 practice questions (focus on ones you find challenging)
2. For each question, write down WHY each wrong answer is wrong — not just why the right one is right
3. Identify the question type (recall, application, analysis, evaluation)
4. Track your patterns: Which question types do you miss most? Which traps catch you?

This approach is far more effective than simply doing hundreds of questions without reflection. Quality analysis of 5 questions beats mindless completion of 50.

Key Takeaways

• 30–40% of HESI A2 questions require critical thinking beyond simple recall
• Use the 5-step framework: read the stem first, identify the thinking type, eliminate absolutes, use POE, choose the "most correct" answer
• In reading comprehension, the passage is always right — don't bring in outside knowledge
• For science, focus on relationships and chains of reasoning, not isolated facts
• Avoid the four common traps: sounds medical, true but irrelevant, extreme language, and overthinking
• Analyze your mistakes daily — understanding why wrong answers are wrong is more valuable than answering more questions