Practice Tests: The #1 Study Technique Most Students Skip
You read the chapter. You highlighted the key terms. You reviewed your notes three times. You feel ready.
Then the exam lands on your desk, and your brain serves up nothing but static.
Here's what went wrong: you practiced recognizing information, but the exam asks you to produce it. Recognition and recall are completely different cognitive skills, and the only way to build recall is through practice testing. Roediger and Karpicke (2006) demonstrated this in a landmark study: students who tested themselves three times after reading a passage remembered 61% of the material a week later, while students who re-read the passage three additional times remembered only 40%.
That's not a small gap. That's the difference between passing and failing.
Notesmakr is an AI-powered study app that generates practice quizzes from your notes, PDFs, and study materials in seconds. But whether you use AI tools or pen-and-paper, the science is the same: testing yourself is the single most effective thing you can do before an exam.
What Are Practice Tests (and Why Do They Work)?
A practice test is any activity where you attempt to retrieve information from memory before the real exam. Flashcard drills, self-quizzes, past exam papers, blank-page brain dumps: these all count. The common thread is that you close your notes and try to answer without looking.
The scientific term for this is the testing effect: the finding that taking a test on material does not just measure what you know, it actively strengthens the memory itself. Every time you successfully pull an answer from memory, the neural pathways storing that answer become stronger, more stable, and easier to access next time.
Practice tests are a learning strategy, not an assessment tool. Getting questions wrong is part of the process. The effort of trying to recall, even when you fail, strengthens memory more than passively re-reading correct answers.
Think of your brain like a muscle at the gym. Re-reading is like watching someone else lift weights: you see the motion, you understand the concept, but your muscles haven't done any work. Practice testing is picking up the barbell yourself. The struggle is what builds strength.
The Science: Why Practice Tests Beat Every Other Study Method
Practice testing is not a study hack that went viral on social media. It is one of the most extensively validated findings in cognitive psychology, supported by over a century of research.
The Dunlosky Review: "High Utility"
In 2013, Dunlosky et al. published a comprehensive review of ten popular study techniques in Psychological Science in the Public Interest. They evaluated each technique across student ages, subject areas, and learning conditions. Only two techniques earned a "high utility" rating: practice testing and distributed practice (spaced repetition).
Meanwhile, the techniques most students default to, highlighting and re-reading, received a "low utility" rating. The researchers concluded that students should replace these passive habits with practice testing for dramatically better results.
The Adesope Meta-Analysis: Effect Size of 0.67
Adesope, Trevisan, and Sundararajan (2017) conducted a large-scale meta-analysis of 272 studies on practice testing, published in the Review of Educational Research. Their findings were striking:
An effect size of 0.67 in classroom settings means practice tests produce roughly a full letter-grade improvement compared to not testing. That is an enormous payoff for a technique that takes no special equipment and no extra time.
The Roediger and Karpicke Breakthrough
The landmark study by Roediger and Karpicke (2006) gave college students a prose passage and split them into groups. One group studied the passage four times. Another studied it once and took three practice tests. On an immediate quiz five minutes later, the re-reading group performed slightly better. But one week later, the testing group dramatically outperformed the re-readers.
Re-reading creates an illusion of competence. You see familiar words and assume you know the material, but familiarity is not the same as recall. Only practice testing reveals what you actually know versus what you merely recognize.
Here's the twist that should change how you study: the re-reading group felt more confident. They predicted higher scores. They believed they were better prepared. They were wrong. Roediger and Karpicke called this the "illusion of competence," and it's the reason so many students walk into exams feeling prepared and walk out confused.
5 Types of Practice Tests (and When to Use Each)
Not all practice tests are created equal. The best approach depends on what you're studying and how much time you have.
Type 1: AI-Generated Quizzes
The fastest way to create practice tests from your own study material. Upload your notes or paste a chapter summary, and an AI quiz maker generates multiple-choice and short-answer questions instantly.
Best for: Subjects with lots of factual content (biology, history, psychology, vocabulary). Also excellent when your professor doesn't release past exams.
How to use it:
Paste your lecture notes, textbook highlights, or PDF into an AI quiz generator like Notesmakr's AI quiz maker.
Close your materials. Answer every question from memory, even if you have to guess.
Read the explanations for questions you missed. This is where the deepest learning happens: Adesope et al. (2017) found that practice testing with feedback consistently outperforms practice testing alone.
Generate a new quiz from the same material or retake the original. The spacing between attempts strengthens long-term retention through spaced repetition.
Type 2: Flashcard Self-Testing
Flashcards are the classic practice test format. Each card presents a question on one side and the answer on the other, forcing pure recall.
Best for: Terminology, definitions, formulas, foreign language vocabulary, anatomy, dates.
Use AI-generated flashcards to create cards from your notes automatically, then review them with spaced repetition. Research shows that combining flashcard testing with spaced repetition scheduling multiplies the retention benefit.
Type 3: Past Exam Papers
The gold standard of practice testing. Past exams show you the exact format, difficulty level, and question types you'll face.
Best for: Any course where past exams are available. Especially valuable for standardised tests (SAT, GRE, MCAT, bar exam).
Simulate real exam conditions: set a timer, sit at a desk, put your phone in another room, and work through the entire paper without stopping. The closer your practice matches the real test, the less exam anxiety you'll feel on test day.
Where to find past papers:
- Your professor's course website or learning management system
- Student unions and study groups
- University library exam archives
- Online databases for standardised tests
Type 4: Blank Page Brain Dumps
The simplest and most powerful practice test: close your notes, grab a blank sheet of paper, and write down everything you remember about a topic. No prompts. No structure. Just pure recall.
Best for: Understanding big-picture concepts, identifying knowledge gaps, essay-based exams.
After your brain dump, open your notes and compare. Circle everything you missed. Those gaps are exactly what you need to study next. This technique pairs perfectly with the Feynman Technique: if you can't explain a concept from memory in simple language, you don't truly understand it.
Type 5: Teach-Back Testing
Explain the material to someone else (a study partner, a friend, even an empty chair) without looking at your notes. Teaching forces you to organize information, fill gaps in logic, and simplify complex ideas.
Best for: Conceptual subjects (philosophy, literature, physics, economics). Extremely effective in group study sessions.
How Many Practice Tests Should You Take?
Research suggests quality and spacing matter more than raw quantity.
Adesope et al.'s (2017) meta-analysis found that a single well-timed practice test before the final exam was more effective than cramming several tests into a short window. The key is spacing your practice tests over weeks, not days.
Here's a practical schedule:
Don't cram all your practice tests into the night before the exam. Spaced repetition research shows that distributing practice over time, even with the same total study hours, produces dramatically better retention. Five 30-minute quiz sessions spread across two weeks beats a single 2.5-hour cramming marathon.
The Feedback Factor: Why Reviewing Answers Matters
Taking a practice test is only half the equation. What you do after the test determines how much you learn.
Butler and Roediger (2008) found that students who reviewed correct answers after a practice test performed significantly better on a delayed final test compared to students who received no feedback. Feedback does two critical things:
- Corrects errors before they solidify: Without feedback, you might confidently memorize the wrong answer. Immediate correction prevents incorrect information from becoming entrenched.
- Strengthens correct responses: Seeing that you got something right reinforces the neural pathway. The satisfaction of "I knew that!" is not just emotional: it physically strengthens the memory trace.
Notesmakr's AI quiz maker provides instant explanations for every question, including why wrong answers are wrong. This targeted feedback closes the loop that makes practice testing maximally effective.
Practice Tests vs. Other Study Techniques
How does practice testing stack up against the methods you're probably using right now?
The message is clear: if you only have time for one study technique, make it practice testing. If you have time for two, add spaced repetition and combine them with AI-generated flashcards reviewed on a schedule.
How to Create Practice Tests from Any Material
You don't need your professor to hand you a practice exam. You can build effective practice tests from anything you're studying.
From Lecture Notes
- After each lecture, write 5-10 questions based on the main concepts covered
- Mix question types: multiple choice for facts, short answer for processes, essay-style for concepts
- Wait at least 24 hours before attempting your questions
- Use Notesmakr's AI quiz maker to generate questions automatically from pasted notes
From Textbook Chapters
- Use the chapter summary and learning objectives as a guide
- Convert each heading into a question (e.g., "Photosynthesis" becomes "What is photosynthesis and what are its two stages?")
- Turn bold/italic vocabulary into flashcard-style recall questions
- Generate flashcards from the PDF using Notesmakr's PDF to flashcards tool
From Study Guides
- If your professor provides a study guide, turn every bullet point into a question
- Create a practice test that covers every topic on the guide
- Use a study guide generator to create structured review materials, then quiz yourself on each section
Common Mistakes When Using Practice Tests
Even the most effective study technique can fail if you use it incorrectly.
Mistake 1: Only Using Recognition-Based Questions
Multiple-choice questions test recognition, not recall. While they have their place, research shows that free-recall questions (where you generate the answer from scratch) produce stronger learning effects. Mix in short-answer and essay-style questions.
Mistake 2: Checking Answers Too Quickly
If you glance at the answer the moment you feel stuck, you're robbing yourself of the retrieval struggle that builds memory. Sit with the discomfort for 10-15 seconds before checking. The effort of trying, even unsuccessfully, strengthens memory traces.
Mistake 3: Skipping Feedback
Taking a practice test without reviewing your answers is like going to the gym and never increasing the weight. You're going through the motions without progressing. Always review what you got wrong, and understand why you got it wrong.
Mistake 4: Cramming All Tests Into One Session
Spaced repetition research is unambiguous: spreading practice tests across multiple sessions over days and weeks produces far better retention than taking five practice tests in one marathon session. The forgetting curve works in your favour when you space your testing.
Mistake 5: Testing Only Easy Material
Your brain wants to practice what it already knows because it feels good. Resist this urge. Focus your practice tests on material you find difficult or confusing. Metacognition research shows that students who monitor their own understanding and target weak spots outperform those who study everything equally.
Supercharge Practice Tests with Notesmakr
Notesmakr turns your notes and PDFs into practice tests in seconds, so you spend more time testing and less time creating questions.
Here's the workflow:
Upload a PDF, paste lecture notes, or write notes directly in the app. Notesmakr processes any study content you give it.
Notesmakr's AI quiz maker creates multiple-choice and short-answer questions from your material, each with detailed explanations.
Use the AI flashcard generator to turn the same material into spaced-repetition flashcards for daily micro-testing.
When you get a question wrong, Notesmakr explains the correct answer and why the other options are incorrect. This closes the feedback loop that maximizes learning.
Retake quizzes over time and see your accuracy improve. Use the results to focus on weak topics in your next study session.
Research and Citations
Here are the key studies referenced in this guide:
- Roediger, H. L., & Karpicke, J. D. (2006): "Test-Enhanced Learning: Taking Memory Tests Improves Long-Term Retention." Psychological Science, 17(3), 249-255.
- Dunlosky, J., et al. (2013): "Improving Students' Learning with Effective Learning Techniques." Psychological Science in the Public Interest, 14(1), 4-58.
- Adesope, O. O., Trevisan, D. A., & Sundararajan, N. (2017): "Rethinking the Use of Tests: A Meta-Analysis of Practice Testing." Review of Educational Research, 87(3), 659-701.
- Butler, A. C., & Roediger, H. L. (2008): "Feedback Enhances the Positive Effects and Reduces the Negative Effects of Multiple-Choice Testing." Memory & Cognition, 36(3), 604-616.
- Karpicke, J. D., & Blunt, J. R. (2011): "Retrieval Practice Produces More Learning than Elaborative Studying with Concept Mapping." Science, 331(6018), 772-775.
FAQ
Are practice tests better than re-reading?
Yes. Roediger and Karpicke (2006) found students who tested themselves remembered 61% of material after one week, compared to 40% for re-readers. Dunlosky et al. (2013) rated practice testing as "high utility" while re-reading earned "low utility." The gap widens the longer you wait between studying and the exam.
How many practice tests should I take before an exam?
Quality and spacing matter more than quantity. Take one practice quiz per topic per week in the weeks leading up to the exam, and one full-length timed practice exam about a week before. Adesope et al. (2017) found that a single well-timed test was more effective than cramming multiple tests into one session.
Can I make my own practice tests or should I use official ones?
Both work. Official past exams are ideal because they match the real format and difficulty. When past exams aren't available, creating your own questions from notes and textbooks is highly effective because the act of writing questions is itself a form of active recall. AI quiz makers can generate questions from your notes instantly.
Do practice tests help with essay exams too?
Absolutely. Brain dumps and teach-back testing are forms of practice testing tailored for essay exams. Write full answers from memory, then compare against your notes. The retrieval practice strengthens both factual recall and your ability to organise ideas into coherent arguments.
When is the best time to take a practice test?
The best time is after a delay, not immediately after studying. Waiting 24-48 hours before testing yourself forces deeper retrieval, which builds stronger memories. Testing right after studying feels easier but produces weaker long-term retention because the information is still in short-term memory.