10 study techniques ranked by how well they work
By Vania Ejaz · Updated September 12, 2026 · 7 min read
Not all study techniques are equal. Retrieval practice and spaced repetition have the strongest evidence behind them, interleaving and teaching out loud are close behind, and re-reading and highlighting sit at the bottom despite being the ones most students use. This ranking explains each one, how to try it in five minutes, and when it fails.
Search for study techniques and you get lists of twenty tips presented as if they were all equally good. They are not. Some have decades of evidence behind them; some feel great and do almost nothing. This ranking leans on the well-known 2013 review by Dunlosky and colleagues, which rated common learning techniques by how well they held up across studies, plus the wider memory research since. No invented numbers, just which study techniques are worth your evening and which are not.
The ranking at a glance
- Retrieval practice
- Spaced repetition
- Interleaving
- Teaching it out loud (the Feynman technique)
- Pomodoro and timeboxing
- Elaborative interrogation
- Dual coding
- Summarising
- Re-reading
- Highlighting
The first four study techniques change how well you remember. The fifth changes whether you show up. The rest range from "useful with care" to "mostly a way to feel busy".
The strongest study techniques
1. Retrieval practice
What it is: pulling information out of your memory instead of looking at it. Flashcards, practice questions, blank-page recall, explaining a topic with the book shut. Rated highest in the Dunlosky review, because the effort of remembering strengthens the memory itself. Full guide: active recall.
Five-minute version: write the topic name at the top of a blank page and everything you know about it underneath, then open the book and mark what you missed.
When it fails: when you peek too early. If you check the answer the moment it feels hard, you turn recall back into reading. Sit with the struggle for a few seconds first.
2. Spaced repetition
What it is: returning to the same material across days and weeks instead of in one block. Also rated highly in the review. Each return catches a memory just as it starts to fade, which is when reviewing it does the most good.
Five-minute version: before starting anything new today, spend five minutes recalling yesterday's topic. That is spacing, no software needed.
When it fails: when the gaps are too long and the memory is fully gone, so you are relearning rather than reviewing. It also fails if the "review" is re-reading rather than recall. Combine it with technique one.
3. Interleaving
What it is: mixing different problem types or topics within one session rather than doing them in blocks. Twenty questions of the same kind teach you the steps; a mix teaches you to recognise which steps apply, which is what exams actually test.
Five-minute version: shuffle your practice questions before you start so you never know what kind is next.
When it fails: when you have not learned the basics of each type yet. Interleaving is for practice, not first contact. Learn each method once, then mix.
4. Teaching it out loud (the Feynman technique)
What it is: explaining a topic in simple words as if to someone younger. It is retrieval practice with an extra check built in: the moment you reach for jargon or go vague, you have found the part you do not understand. Named after the physicist Richard Feynman.
Five-minute version: record yourself explaining the last thing you studied, then listen back for the wobbly bits. This is what an Ingatik voice recap is: teach it to Whizzy, and the app turns your explanation into notes, next tasks and a recall check.
When it fails: when you explain while reading from the page. Close it first. Also fails if you never listen back or write down the gaps, because then the check does nothing.
Study techniques that help you show up
5. Pomodoro and timeboxing
What it is: working in fixed blocks (classically 25 minutes) with short breaks between. It does not improve memory by itself. It improves the odds that you start, keep going, and stop before you burn out. How to run it properly: the pomodoro technique.
Five-minute version: set a timer for one short block and agree with yourself that you only have to do that one. Starting is the whole battle.
When it fails: when the block is spent re-reading. Pomodoro is a container. Put retrieval practice inside it.
6. Elaborative interrogation
What it is: asking "why is that true?" and "how does this connect to what I already know?" about each fact instead of accepting it. The review rated it moderately useful. It works best when you already have some background to connect the new fact to.
Five-minute version: take three facts from today's notes and write a one-line "because" after each.
When it fails: on topics you know nothing about yet, where your "why" answers are guesses, and on pure memorisation like vocabulary where there is no why to find.
7. Dual coding
What it is: pairing words with a visual: a diagram, a timeline, a sketched process. The idea is that two routes into a memory are better than one. Evidence is decent for topics that have a natural structure to draw.
Five-minute version: turn one paragraph of notes into a rough diagram from memory, without looking, then compare.
When it fails: when the drawing becomes the goal. A beautiful colour-coded mind map copied from the textbook is decoration, not learning. Draw it from recall or not at all.
The weakest study techniques (and the most popular)
8. Summarising
What it is: rewriting a chapter in your own, shorter words. The review found it helps only when done well, and most students are never taught how. Done with the book open, it is mostly copying.
Five-minute version: summarise a section from memory in three sentences, then check. That flips it into retrieval and makes it worth doing.
When it fails: whenever your summary is longer than it needs to be, or when it is written while reading. Length and neatness are not learning.
9. Re-reading
What it is: reading the material again. The most common study method there is, and one of the weakest in the review. The second read feels smooth, and smoothness gets mistaken for knowing.
Five-minute version: if you must re-read, read one section, close it, and say it back. That is the only version worth the time.
When it fails: almost always, as a main strategy. A first read to understand is necessary. A third read to "make it stick" is where the evening goes to waste.
10. Highlighting
What it is: marking the important lines. Rated lowest in the review. It requires no effort to remember anything, and most people highlight far too much, so the marks stop meaning anything.
Five-minute version: highlight nothing. Instead, write one question in the margin per section, and answer those questions later without looking.
When it fails: as soon as it is your main technique. Fine as a way to flag what to make flashcards from. Useless as a way to learn.
How to combine the best study techniques
You do not need all ten study techniques. A strong routine uses the top four inside the fifth: study in a short block, close the book and teach the topic out loud, come back to it in a day or two, and mix topics when you practise. That is the loop Ingatik is built around: a timer, a voice recap where you explain what you learned, AI notes and a recall check from that recording, and streaks that bring you back tomorrow. The core loop is free; the Study Coach on Pro and Max adds quizzes across several saved recaps. For the full routine, read how to study effectively.
Try the top four techniques in one session. Ingatik: Recall is free on the App Store and Google Play.
Frequently asked questions
- What is the single best study technique?
- Retrieval practice: testing yourself instead of re-reading. Of all the study techniques in this ranking, it has the strongest and most consistent evidence. Pair it with spacing your sessions across days and you have covered most of what matters.
- Are flashcards a good study method?
- Yes, if you actually try to answer before flipping. Flashcards are retrieval practice in a convenient form. They are weakest for topics that need understanding rather than facts, where explaining out loud works better.
- Does highlighting help you study?
- Very little on its own. It takes no memory effort and most people mark too much. Use it only to flag what to turn into questions later, and do the learning by answering those questions from memory.
- Is re-reading ever useful?
- A first read to understand the material is essential. A second or third read to make it stick is mostly wasted; recall the section instead and read again only the parts you could not reproduce.
- How do I know which study strategies work for me?
- Test the outcome, not the feeling. After a session, close everything and write what you can remember. If a technique leaves you unable to do that, it did not work, however productive it felt.