Most popular study methods are actually the least effective. Highlighting, re-reading, and summarizing feel productive but barely help with retention. Here's what works instead — backed by a landmark meta-analysis of 10 learning techniques (Dunlosky et al., 2013).
What is the best study method?
Active recall — testing yourself on the material. Close the book. Try to remember what you just read. Write it down from memory. The effort of retrieving information is what strengthens memory. Passive re-reading barely registers. Dunlosky's research rated practice testing as having "high utility" — the highest rating of all 10 techniques studied.
How to practice active recall
- After reading a section, close the book and write down everything you remember
- Use blank paper — write questions on one side, answers on the other
- Explain the concept out loud as if teaching someone (see Feynman technique below)
- Take practice tests — even making up your own questions works
What is spaced repetition?
Reviewing material at increasing intervals. Instead of cramming everything the night before, review your notes after 1 day, then 3 days, then 7, then 14. Each review takes less time but locks the information deeper. Dunlosky's meta-analysis also rated distributed practice (spaced repetition) as "high utility." Flashcard apps like Anki automate the scheduling.
Optimal spacing schedule
- Day 1: Learn the material
- Day 2: First review (you'll forget ~50% — that's normal)
- Day 4-5: Second review (retention jumps)
- Day 7-10: Third review (starts feeling easier)
- Day 14-21: Final review before exam
What is the Feynman Technique?
Explain the concept as if teaching a 12-year-old. Named after physicist Richard Feynman, this method exposes gaps in understanding. If you can't explain something simply, you don't truly understand it. Steps: (1) Write down the concept, (2) Explain it in simple language, (3) Identify where you got stuck, (4) Go back to the source and fill the gaps, (5) Simplify again.
What is interleaving?
Mixing different topics or problem types within a study session. Instead of doing 30 math problems of the same type, mix algebra, geometry, and statistics. It feels harder — but that difficulty is what strengthens learning. Interleaving forces your brain to identify which strategy applies to each problem, building deeper understanding. Research shows interleaved practice outperforms blocked practice for long-term retention.
Does the Pomodoro technique help with studying?
Yes — it provides the structure that makes active recall effective. Use each 25-minute session for one topic. During the session, alternate between reading and self-testing. The breaks between sessions help consolidate what you learned. For students with ADHD, see our dedicated guide.
Which study methods don't work?
Highlighting, re-reading, and copying notes. They feel productive because you're touching the material. But recognition ("this looks familiar") is not the same as recall ("I can explain this from memory"). Dunlosky's meta-analysis rated these as "low utility":
| Method | Effectiveness | Why |
|---|---|---|
| Highlighting | ❌ Low | Creates illusion of learning — recognition ≠ recall |
| Re-reading | ❌ Low | Passive exposure doesn't build memory pathways |
| Summarizing | 🟡 Low-Medium | Helps only if you do it from memory (which is active recall) |
| Active Recall | ✅ High | Retrieval effort strengthens memory directly |
| Spaced Repetition | ✅ High | Distributing review fights the forgetting curve |
| Interleaving | ✅ Medium-High | Mixing topics builds flexible understanding |
How do I study for long hours effectively?
Interleave subjects and use active methods. Don't spend 4 hours on one topic. Switch subjects every 2-hour block. Use active recall within each block. Take real breaks between blocks. And remember: 3-4 hours of active recall beats 8 hours of passive re-reading every time.
What is the Cornell Note-Taking System?
A structured format that builds active recall into note-taking. Divide your page into three sections: a narrow left column for cue questions, a wide right column for notes, and a bottom section for summaries. After class, cover the right column and test yourself using the cue questions. This transforms passive notes into a self-testing tool.
FAQ
- Is highlighting a good study method?
- No. A 2013 meta-analysis of 10 techniques rated highlighting as "low utility." Active recall and spaced repetition are far more effective.
- What is the best app for spaced repetition?
- Anki is the most popular and flexible. For a simpler option, physical flashcards work just as well.
- How many hours should I study per day?
- Quality matters more than quantity. 3-4 hours of active recall beats 8 hours of passive re-reading.
- What is the fastest way to memorize something?
- Active recall + spaced repetition. Test yourself immediately after learning, then review at increasing intervals (1 day, 3 days, 7 days).
- Does taking notes help you learn?
- Only if you use them for self-testing. Writing notes and never reviewing them is nearly as ineffective as highlighting.
