Need a logical fallacies quiz with answers PDF? This page gives you a ready-to-print eight-question quiz followed by a separate answer key. It does not host a direct downloadable file, but you can use your browser’s Print > Save as PDF option or copy the quiz section into a document before printing.
Want to warm up on screen first? PurrLearn's interactive logical fallacy quiz gives you 12 multiple-choice arguments with a plain-English explanation after each one, no sign-up — then print this sheet to practice writing the diagnosis out yourself.
Printable Logical Fallacies Quiz
Do the questions before reading the key. For each argument, identify the conclusion, the stated support, and the reasoning error.
- “The town council should reject Maya’s proposal for a new recycling program because Maya cheats at board games.”
- “Either the school approves the student-tracking app, or it does not care about student safety.”
- “The library extended its opening hours in September, and average test scores rose that term. The longer library hours caused the improvement.”
- Lin says, “Let’s shorten the weekly meeting from 30 minutes to 20.” Amir replies, “Lin wants the team to stop communicating, so we should reject the idea.”
- “Two drivers from that rideshare company were rude to me. Everyone who works for that company must be rude.”
- “This policy is fair because it meets the fairness requirement, and the fairness requirement is that the policy be fair.”
- “A device that is certified meets the safety standard. This device meets the safety standard. Therefore, it is certified.”
- “My neighbor says the city’s air-quality report is wrong, but she never trims her hedges. Therefore, the report is accurate.”
Answer Key and Explanations
1. Ad hominem
The conclusion is that the recycling proposal should be rejected. The only stated support is an attack on Maya’s conduct in an unrelated board game. Even if that claim were true, it supplies no reason to think the proposal is ineffective, too expensive, or impractical to implement.
2. False dilemma
The argument treats approval of one specific app as the only way to care about student safety. The school could value safety while choosing another measure, requiring stronger privacy protections, or deciding the app creates risks of its own.
3. Correlation-causation fallacy
Two changes occurred during the same period: longer library hours and higher scores. That pattern does not establish that one caused the other. Tutoring, a different group of students, changes in instruction, or other factors could help explain the score increase.
4. Straw man
Lin proposes shortening a meeting, not ending communication. Amir replaces the actual proposal with a more extreme version and attacks that replacement. The response never addresses whether a 20-minute meeting could still be useful.
5. Hasty generalization
Two rude encounters do not justify a claim about every driver at the company. The sample is too small and may not represent the wider group. A stronger argument would need more representative evidence.
6. Circular reasoning
The argument uses “fair” to establish fairness without offering an independent standard. It assumes what it needs to prove. A non-circular defense would explain the rule, principle, or treatment that makes the policy fair.
7. Affirming the consequent
The argument has this form:
- If a device is certified, it meets the safety standard.
- This device meets the safety standard.
- Therefore, it is certified.
Certification is enough to guarantee compliance, but compliance alone does not prove certification. A device might meet the standard without completing the certification process.
8. Ad hominem
The neighbor’s hedge-trimming habits have nothing to do with the accuracy of an air-quality report. The argument dismisses a criticism by attacking an irrelevant personal trait, then wrongly treats that attack as proof that the report is correct.
How to Make a Clean PDF Practice Sheet
For a questions-only worksheet, copy the eight numbered arguments into a document before printing. Leave several lines under each item and use these prompts:
- What is the conclusion?
- What evidence is offered?
- What does that evidence fail to establish?
- What fallacy label best describes the gap?
Then save that document as a PDF or print it. Keep the answer key separate until you have committed to an answer for every question.
If you want a longer set after this one, try PurrLearn’s logical fallacies quiz with answers for 25 written questions, or the 12-question logical fallacy quiz if you would rather answer on screen and get instant feedback. The useful part of reviewing is not simply seeing a label; it is being able to explain why the evidence does not reach the conclusion.
A Reliable Way to Spot the Flaw
Find the conclusion first
Look for what the speaker wants you to accept. Signal words such as “therefore,” “so,” and “this shows” can help, but many short arguments leave the conclusion unstated until the end.
In question 3, the conclusion is not that library hours increased or that scores rose. It is the causal claim that longer hours produced the increase.
State the missing step plainly
Ask: “What would have to be true for this evidence to prove that conclusion?” That question exposes the unsupported jump.
For question 5, the missing step is not merely “the speaker needs more evidence.” The argument assumes two drivers represent an entire company. Naming that precise leap makes hasty generalization easier to recognize.
Distinguish similar-looking errors
Personal attacks often appear beside evidence that sounds relevant but is not. In question 1, Maya’s board-game behavior is plainly unrelated to a recycling proposal. In question 8, the neighbor’s untidy hedges are unrelated to both her criticism and the report’s evidence.
For more contrasts among common labels, see this list of logical fallacies with clear examples and a self-test.
Why This Helps With LSAT Logical Reasoning
Fallacy practice builds a core LSAT Logical Reasoning habit: locating the gap between premises and conclusion. On flaw questions, the best response identifies the argument’s mistake. It does not need to show that the conclusion is false.
Formal labels are useful for learning, but test-prep questions often describe the same error in ordinary language. For example, affirming the consequent may be described as treating a necessary condition as though it were sufficient. The structural pattern matters more than memorizing the Latin or textbook name.
For a worked example of turning an argument into a clear flaw description, read this step-by-step LSAT flaw question. After each missed quiz item, explain the gap aloud before checking the label. If your explanation identifies the unsupported leap, you are learning the transferable skill.
FAQ
Can I download this quiz as a PDF?
This page is print-to-PDF material rather than a direct file download. Use your browser’s print command and choose its PDF-saving option, or copy the question section into a document for a cleaner worksheet.
Can I print the questions without the answers?
Yes. Copy the “Printable Logical Fallacies Quiz” section into a document and print or save that version before adding the answer key. This keeps the explanations out of sight during practice.
What logical fallacies appear most often on quizzes?
Common quiz topics include ad hominem, straw man, false dilemma, hasty generalization, circular reasoning, flawed causal claims, and conditional-logic errors. Focus on the specific reasoning gap, because the same label can look different across examples.
Is correlation the same as causation?
No. Correlation means two things vary together; causation means one thing produces a change in another. A causal argument needs support that rules out plausible alternative explanations.
Conclusion
A useful logical fallacies quiz teaches more than labels. Print the questions, identify the conclusion and unsupported leap in each argument, then use the answer key to sharpen your explanation. That review habit carries directly into more demanding reasoning questions.