Study Techniques That Actually Work: Methods Ranked by Research

Last updated: 28 October 2026

The best study techniques for students are not the most popular ones. In the largest review of the field, Dunlosky and colleagues (2013) rated ten common techniques and gave only two a high utility rating: practice testing (quizzing yourself instead of rereading) and distributed practice (spreading study over days instead of cramming). Rereading and highlighting, the methods most students rely on, were rated low utility. This guide ranks the main study methods by the strength of the research behind them, shows you exactly how to use the top ones, and tells you honestly which popular methods to stop depending on.

Key takeaways
– Test yourself, do not just reread. Practice testing (active recall) is the single best-supported study technique in the research.
– Spread it out. The same study time split across days beats one long cram session. Spaced practice was the other high-utility method in Dunlosky et al. (2013).
– Mix it up. Once you know the basics of a topic, mixing different problem types (interleaving) beats drilling one type at a time.
– Ask “why” and explain it back. Elaborative interrogation and self-explanation have moderate research support and build real understanding.
– Rereading, highlighting and “learning styles” sit at the bottom of the evidence table. Keep them in their place.
– If a session feels easy and smooth, be suspicious. The methods that work feel harder, and that effort is a sign learning is happening.

How we ranked these study methods

Not all “science-backed” lists are equal, so here is the standard used here. The main source is the 2013 review by John Dunlosky and five colleagues, published in Psychological Science in the Public Interest. They examined hundreds of studies on ten techniques students actually use and rated each one high, moderate or low utility, based on whether it works across different ages, subjects, materials and test formats.

Where Dunlosky’s team rated a technique, we use their rating. Where a technique was not in their ten (the Pomodoro technique, for example), we say so plainly and describe what the direct evidence actually shows, instead of borrowing credibility from neighbouring research. Two other anchors run through the guide: The Learning Scientists, a group of cognitive psychologists who promote six strategies with strong support (spaced practice, retrieval practice, elaboration, interleaving, concrete examples and dual coding), and the U.S. Institute of Education Sciences practice guide Organizing Instruction and Study to Improve Student Learning, which rates quizzing and deep explanatory questions as backed by strong evidence.

One warning before the table: a rating is about averages across many studies, not a promise for one student in one week. A moderate-utility technique used well beats a high-utility technique used badly. The goal is to build your studying around the top of the table and use the rest as support.

The ranked table: best study techniques for students at a glance

Rank	Technique	Evidence strength	Best for	Watch out for
1	Practice testing (active recall / retrieval practice)	High utility: Dunlosky et al. (2013)	Facts, concepts, problem-solving, past-paper practice	Only works if you check answers and fix errors afterwards
2	Distributed practice (spaced practice / spaced repetition)	High utility: Dunlosky et al. (2013); meta-analysis by Cepeda et al. (2006)	Anything you must still remember weeks later	Needs you to start before the last week
3	Interleaved practice	Moderate utility: Dunlosky et al. (2013), with strong maths results in Rohrer & Taylor’s experiments	Problem types that look similar, e.g. maths, physics, chemistry calculations	Feels harder and messier than blocked practice; that is normal
4	Elaborative interrogation (asking “why” and “how”)	Moderate utility: Dunlosky et al. (2013); deep questions rated strong evidence in the IES practice guide	Understanding facts and processes, essay subjects	Works better when you already know something about the topic
5	Self-explanation (including the Feynman technique)	Moderate utility: Dunlosky et al. (2013)	Worked examples, derivations, anything step-by-step	Explaining wrongly and never checking; always verify against the source
6	Concrete examples + dual coding	Supported: two of The Learning Scientists’ six strategies; combining graphics with verbal descriptions rated moderate evidence by IES	Abstract ideas, processes, diagrams (biology, geography, economics)	Pretty diagrams can become decoration. Every visual must carry information
7	Pomodoro technique (timed study blocks)	Weak / mixed direct evidence as a learning method: not rated by Dunlosky et al.; useful as a focus habit	Starting a session, limiting phone drift, pacing a long study day	A timer does not teach you anything by itself
8	Summarisation	Low utility overall: Dunlosky et al. (2013), though it can help skilled summarisers on some tasks	Condensing a long text after you understand it	Copying sentences out is not summarising, and neither is learning by itself
9	Highlighting / underlining	Low utility: Dunlosky et al. (2013)	Marking a few key points on a first read, to turn into questions later	Highlighting half the page and calling it revision
10	Rereading	Low utility: Dunlosky et al. (2013)	A first pass to get oriented; checking a detail	Familiarity feels like knowledge, but it is not
n/a	Learning styles (studying as a “visual learner”, etc.)	No adequate evidence for matching study to a style (Pashler et al. (2008))	Nothing, as a study system	It can box you in and waste time you could spend testing yourself

Now the top techniques in detail: what each one is, what the research actually found, and the exact steps to use it this week.

1. Practice testing (active recall): the best-supported study technique

Practice testing means trying to produce an answer from memory, then checking whether you were right. It is also called active recall or retrieval practice. Flashcards used properly, practice questions, past papers, a blank page you fill from memory, all of these are practice testing. Rereading your notes with the answers in front of you is not.

What the research says

Dunlosky et al. (2013) rated practice testing high utility because it benefits learners of different ages and abilities, across many kinds of material and test formats. The IES practice guide likewise gives its strongest backing to using quizzes to re-expose students to key content.

A neat experiment shows why you should not stop testing yourself once you “know” something. Karpicke and Roediger (2008), published in Science, had students learn foreign-language vocabulary. Once a word was recalled correctly once, it was in some conditions dropped from further testing but kept in study sessions. A week later, words that had been repeatedly tested were remembered far better; repeated studying after first learning added no benefit to delayed recall. The lesson for your revision: getting a flashcard right once does not mean it is learned. Keep it in the deck a while longer.

How to do it (steps you can copy)

1. Study a small chunk first. Read or watch the material once, properly. Retrieval practice is for the second pass onwards, not a substitute for meeting the material.
2. Close the book and write. Take a blank page and write everything you can remember about the topic: definitions, steps, formulas, dates. Cornell University’s Learning Strategies Center calls this “blank page testing” and recommends it for exactly this reason: it shows you what you do and do not know.
3. Turn your notes into questions. For each heading in your notes, write the question the heading answers. “Causes of the French Revolution” becomes “What were the three main causes…?” Keep the questions in a notebook or a flashcard app.
4. Answer out loud or in writing before you peek. The struggle to remember is the active ingredient. If you look first, you have turned the exercise back into rereading.
5. Check, correct, and mark. Tick what was right, fix what was wrong in a different colour, and star the questions you missed: those go first in your next session.
6. Use past papers under timed conditions once a week per subject. For JAMB candidates, this means real past questions against the clock, then a careful review of every error. For WAEC and NECO candidates, mark schemes matter as much as the questions: compare your answer with what the examiner rewards.

Worked example (WAEC Biology): After reading the topic Respiration, close the book. Write the word equation for aerobic respiration, list three differences between aerobic and anaerobic respiration, and sketch the path of air into the lungs. Then open the book and check. Anything missing becomes a question card, front: “Two products of anaerobic respiration in yeast?”, back: “Ethanol and carbon dioxide.”

From our editorial team: In the blank-page step, the topic students stumble on most is the one above: respiration. Most remember “oxygen in, carbon dioxide out” but miss that anaerobic respiration in muscles produces lactic acid, while in yeast it produces alcohol and carbon dioxide. If your blank page cannot separate those two, that is the first gap to close.

2. Distributed practice: spread it out, remember it longer

Distributed practice, also called spaced practice or spaced repetition, is a schedule, not an activity: you spread the same total study time across several sessions on different days instead of massing it into one block.

What the research says

This was Dunlosky et al.’s second high-utility technique. The effect is one of the most replicated in memory research: Cepeda and colleagues (2006) reviewed the distributed-practice literature (254 studies with more than 14,000 participants, as summarised in Dunlosky’s review) and found students recalled more after spaced study (47%) than after massed study (37%). Cepeda et al. (2008) added an important detail: the best gap between sessions grows with how long you need to remember. Studying for a test in one week? Gaps of about a day work well. Studying for an exam in three months? Your reviews can sit a week or more apart and still do their job.

Cramming is the opposite of this, and the research is blunt about it: massed practice can produce a decent score on a test tomorrow, but the forgetting afterwards is steep. If your goal includes next term, the next exam in the series, or a professional exam after graduation, spacing is not optional.

How to do it (a schedule you can copy)

Use this simple expanding pattern for each topic, and adjust it to your exam date:

• Session 1: Learn it. Study the topic and do your first blank-page test the same day.
• Session 2: Next day. Ten minutes of questions on the topic. Fix errors.
• Session 3: Three days later. Mixed questions; include the items you star-marked.
• Session 4: One week later. A short timed set or past-paper questions on the topic.
• Session 5: Two weeks later, then monthly. Quick retrieval only. This is maintenance, and it is cheap because the memory is now strong.

Five short touches beat one five-hour block, and most of them take under twenty minutes. A paper calendar on your wall works; so does a flashcard app with a spaced-repetition scheduler, or the free planner in our Free Study Planner Template if you want the schedule laid out for you.

Worked example (JAMB Chemistry): You learn the mole concept on Monday. Tuesday, you spend ten minutes converting masses to moles from memory. Thursday, you mix mole questions with last week’s topic. The following Monday, you sit a timed set of past questions covering both. By exam week, the mole concept has been retrieved four times across two weeks. That is worth far more than the single long Sunday you might otherwise have given it.

3. Interleaved practice: mix problem types on purpose

Interleaving means practising different types of problems or topics in one session, in mixed order, instead of finishing all of one type before starting the next (which is called blocked practice).

What the research says

Dunlosky et al. (2013) rated interleaved practice moderate utility. The evidence base was smaller than for testing and spacing, especially outside problem-solving subjects. But within maths, the effects are striking. In Rohrer and Taylor’s 2007 experiment, students practised calculating the volumes of different solids either blocked by type or shuffled. During practice, the blocked group looked far better (89% correct vs 60%). On a test one week later the result flipped hard: the interleaved group scored 63%, the blocked group 20%. Blocked practice had taught students to apply the formula they had just been shown; interleaved practice taught them to choose the right formula, which is what a real exam asks.

How to do it

1. Learn each problem type separately first. Interleaving is for practice after the basics make sense. Ten minutes of blocked practice on a brand-new method is fine.
2. Build mixed sets. Take five questions each from three topics you have already covered and shuffle them. Do not label them by topic. Deciding what kind of question it is forms part of the practice.
3. Say the type before you solve. Before calculating, name the method you are about to use and why. This one habit forces the discrimination that interleaving is meant to train.
4. Keep old topics in rotation. A weekly mixed set that is half current topic, half earlier topics doubles as spaced practice.

Worked example (JAMB / WAEC Mathematics): Instead of twenty quadratic-equation questions in a row, build a set of twenty from quadratics, simultaneous equations, logarithms and circle geometry, shuffled. The first mixed set will feel rough and your score in practice will drop. That drop is the Rohrer-and-Taylor pattern working in your favour. What matters is the score a week later, not today’s comfort.

4. Elaborative interrogation: keep asking “why” and “how”

Elaborative interrogation means interrogating the material as you study: for every fact, ask why is this true? and how does this happen?, and answer in your own words using what you already know.

What the research says

Dunlosky et al. (2013) rated it moderate utility: it helps, especially for learning facts and connecting them, and it works better when you already have some knowledge of the topic to connect to. The IES practice guide independently rated deep explanatory questions (questions that push students to explain why and how) as backed by strong evidence.

How to do it

1. Read a short section, then close it.
2. Ask three questions: Why is this true? How does it work, step by step? What would happen if this condition changed?
3. Answer out loud, in full sentences, connecting the new fact to something you already know.
4. Check your explanation against the book. Elaborating a wrong explanation confidently is worse than not elaborating. The check is what keeps this honest.

Worked example (Economics): Fact: “When the price of a good falls, quantity demanded rises.” Ask why. Because the good is now cheaper relative to alternatives, so some buyers switch to it; and because buyers’ existing money now stretches further, so they can afford more. Ask how that could fail: if the good is a necessity with no substitutes, or if incomes are falling at the same time. You have now understood the law of demand in a way that a highlighted paragraph will never give you, and you have material for an essay answer.

5. Self-explanation and the Feynman technique: explain it like a teacher

Self-explanation means working through material by explaining each step to yourself as you go: why this step, why in this order, what it connects to. The popular Feynman technique is a packaged version of the same idea: pick a concept, explain it in simple language as if teaching someone younger, find the places where your explanation breaks down, fix them from the source, and simplify again.

What the research says

Dunlosky et al. (2013) rated self-explanation moderate utility, with good evidence for learning from worked examples and texts. It helps learners spot the gaps between what they have read and what they actually understand. Cornell’s Learning Strategies Center gives the student version of the same advice: try to teach the material to someone else; if you cannot teach it, you do not yet understand it.

How to do it

1. Choose one concept. Not a chapter, one concept, e.g. “why the sky changes colour at sunset” or “how to complete the square”.
2. Explain it on paper or out loud, simply, without looking at the book. Use a concrete example of your own.
3. Mark every wobble. Any sentence where you wave your hands (“and then it just… happens”) is a gap. Write it down.
4. Go back to the source for the gaps only, then re-explain the whole concept cleanly.

From our editorial team: When students first explain a topic aloud, the explanation usually falls apart at the “why” step. A candidate can state that a reaction speeds up as temperature rises, then stall on why: more particles colliding with enough activation energy. If you cannot give the why in one plain sentence, you have found the exact part to re-learn.

6. Concrete examples and dual coding: make ideas visible

Two of The Learning Scientists’ six strategies belong together in practice. Concrete examples means anchoring an abstract idea to specific, vivid cases (several of them, with different surface details, so you learn the underlying idea rather than one story). Dual coding means combining words with a visual (a diagram, timeline, sketch or table) so the idea exists in two forms in memory, not one.

What the research says

The IES practice guide rates combining graphics with verbal descriptions as supported by moderate evidence, and likewise supports connecting abstract representations of a concept with concrete ones. The Learning Scientists add a practical caution on concrete examples: one example is not enough, because beginners tend to remember the story and miss the principle. Use two or three examples and state explicitly what they have in common.

How to do it

• For every abstract rule, write one example from daily life. Opportunity cost becomes: choosing two hours of evening classes means giving up the paid shift you could have worked. The shift is the opportunity cost.
• Draw processes, do not just read them. The water cycle, the nitrogen cycle, current flow in a circuit: sketch it from memory (that sketch is also retrieval practice), then compare with the textbook diagram and fix yours.
• Keep visuals honest. A diagram should show relationships: arrows, sequences, comparisons. If removing the picture loses no information, it was decoration.

7. The Pomodoro technique: useful timer, honest limits

The Pomodoro technique is simple: set a timer for a focused block (classically 25 minutes), work on one task until it rings, take a short break of about five minutes, and take a longer break after four blocks.

Here is the honest part, because most articles skip it: Pomodoro is a time-management habit, not a memory technique. It was not among the ten techniques Dunlosky et al. rated, and the direct research on it is still thin and mixed: mostly small studies about focus, fatigue and getting started, not about long-term retention. Nothing about a 25-minute timer makes information stick. What it genuinely does well is lower the barrier to starting (“just one block”), protect a session from phone drift, and pace a long day so you do not burn out by hour three.

Our advice: use Pomodoro as the container, and put high-utility work inside it. One block of blank-page testing plus error-fixing beats four blocks of rereading, whatever the timer says. And if a longer block suits a hard problem set, take it. The evidence does not crown 25 minutes as magic.

The methods at the bottom of the table, and what to do instead

Rereading (low utility). A first read is how you meet material; a second and third read mostly make it feel familiar. Familiarity is a trap: the page looks easy, so you judge that you know it. Psychologists call this an illusion of competence, and it collapses in the exam hall where the page is not in front of you. Instead: after one careful read, switch to blank-page testing.

Highlighting (low utility). Dunlosky’s team found highlighting does not consistently improve performance, partly because students mark too much and then “revise” by admiring the marks. Instead: highlight sparingly on a first read, then convert each highlighted point into a question for self-testing. The conversion is where the value appears.

Summarisation (low utility overall). Writing a good summary can help, if you can already summarise well, and if the summary is written from understanding rather than copied. For most students it becomes slow sentence-copying. Instead: summarise from memory, with the book closed. Now it is retrieval practice wearing a summary’s clothes.

Learning styles (no adequate evidence). You may prefer videos, or diagrams, or listening. Preferences are real. But Pashler et al. (2008), reviewing the research for Psychological Science in the Public Interest, found no adequate evidence that matching study to a supposed visual, auditory or kinaesthetic style improves learning. The studies that could properly test the idea did not support it. Instead: match the method to the material, not to a label: draw the diagram because anatomy is spatial, say the French vocabulary aloud because pronunciation is sound, and test yourself in the same format as your exam. Read more in The Learning Scientists’ six strategies for effective learning, which makes the same evidence-first case.

Cramming (the anti-pattern). Massed, last-night study is what distributed practice is measured against, and it loses on retention every time it is tested fairly. If you are reading this the night before an exam, do not despair: spend the time on practice questions and your star-marked weak topics, then sleep. But resolve that next exam gets the spaced version.

A weekly plan that combines the top techniques

Techniques compound. Here is how the top five fit into one ordinary week for one subject: scale it to your subjects, and see Cornell’s Learning Strategies Center guide to effective study strategies for the same system in a university setting.

Day	Session (25–40 minutes)	Techniques used
Monday	Learn Topic A properly; end with a blank-page test	Practice testing
Tuesday	Quick questions on Topic A (10 min); learn Topic B	Spaced practice + practice testing
Wednesday	Mixed problem set: Topics A + B, unlabelled	Interleaving + practice testing
Thursday	“Why/how” session on Topic B; explain it aloud, fix gaps	Elaborative interrogation + self-explanation
Friday	Spaced review: star-marked questions from A and B only	Spaced practice
Saturday	One timed past-paper section; mark it, log every error	Practice testing in exam format
Sunday	Rest, or 15 minutes re-testing Sunday’s errors from Saturday	Spaced practice

And if your exam is JAMB, WAEC or NECO, build this weekly rhythm on top of the dates and syllabus in our 2027 Exam Timetable guide. Spacing only works when you count backwards from a real date. Our JAMB-specific guide on how to pass JAMB without studying too hard shows how the same ideas look inside a UTME timetable, and the NECO equivalent is covered in our guide to passing NECO in one sitting.

From our editorial team: The session students most often skip in this weekly rhythm is the end-of-week review. It feels optional because nothing new is learned in it. Moving it earlier in the weekend, before other plans fill the day, is the adjustment that keeps the whole plan alive.

Common mistakes

• Testing without checking. Retrieval practice with no feedback can practise your errors. Always mark against the source, a mark scheme or a worked solution.
• Dropping a topic after one correct answer. Karpicke and Roediger (2008) showed that is exactly when continued testing pays off most. Retire flashcards after several spaced successes, not the first one.
• Judging study by hours. An hour of smooth rereading feels productive and teaches little. Judge by closed-book recall: what can you produce, unaided, at the end?
• Interleaving too early. Mixing problem types before you can do any of them is just confusion. Learn the basics blocked, then mix.
• Making beautiful notes instead of memories. Colour-coded, rewritten notes are a common hiding place from the harder work of self-testing. Notes are raw material, not the finished product.
• Explaining without verifying. Self-explanation and elaboration build confidence fast, including confidence in wrong explanations. The check against the book is not optional.
• Buying a system instead of using one. Apps, courses and templates can support these techniques, and our guide to the best AI tools for students covers using them to generate practice questions. But no tool changes the ranking in the table: your recall attempts are the engine.

Frequently asked questions

What is the single most effective study technique?

Practice testing, also called active recall or retrieval practice. In Dunlosky et al.’s 2013 review of ten techniques it was one of only two rated high utility, alongside distributed (spaced) practice. Testing yourself works because pulling an answer out of memory strengthens it far more than reading the answer again, and it shows you exactly what you still do not know.

Why doesn’t highlighting or rereading work very well?

Both are passive. Rereading makes the page feel familiar, and familiarity feels like knowing, but an exam asks you to produce answers, not recognise them. Dunlosky et al. (2013) rated both highlighting and rereading as low utility. They are not forbidden: use a first read and light highlighting to organise material, then convert the important points into questions and test yourself on them.

How many hours a day should I study?

There is no research-backed magic number of hours. Method matters more than raw time: two focused hours of self-testing and spaced review will usually beat five distracted hours of rereading. Judge a session by what you can recall and solve afterwards with the book closed, not by how long you sat with it open.

How far in advance should I start studying for an exam?

Early enough to space your sessions. Spaced practice only works if there is time to space, so starting two to four weeks out (longer for a full syllabus like WAEC or JAMB) lets you revisit each topic several times. If you have only a week, you can still use practice testing and interleaving; you simply get less of the spacing benefit.

Do learning styles work: should I study as a visual or auditory learner?

No good evidence supports matching study to a supposed learning style. Pashler et al. (2008) reviewed the research for the journal Psychological Science in the Public Interest and found no adequate evidence that visual learners learn better from pictures or auditory learners from listening. Preferences are real, but preference is not effectiveness. Use the format the subject demands (diagrams for anatomy and maps, worked problems for maths) and test yourself in the format your exam will use.

Is the Pomodoro technique an evidence-based study method?

Pomodoro (study for a timed block such as 25 minutes, then take a short break) is a focus and time-management habit, not a memory technique. It was not one of the ten techniques rated by Dunlosky et al. (2013), and direct research on it is still thin and mixed. Use it if it helps you start and stay off your phone, but fill the timed blocks with practice testing and spaced review; the timer alone does not make learning stick.

Sources

• Dunlosky, J., Rawson, K. A., Marsh, E. J., Nathan, M. J., & Willingham, D. T. (2013). Improving students’ learning with effective learning techniques. Psychological Science in the Public Interest, 14(1), 4–58.
• Cepeda, N. J., Pashler, H., Vul, E., Wixted, J. T., & Rohrer, D. (2006). Distributed practice in verbal recall tasks: A review and quantitative synthesis. Review of General Psychology, 10(4), 354–380.
• Karpicke, J. D., & Roediger, H. L. (2008). The critical importance of retrieval for learning. Science, 319(5865), 966–968. https://pubmed.ncbi.nlm.nih.gov/18276894/
• Rohrer, D., & Taylor, K. (2007). The shuffling of mathematics problems improves learning. Instructional Science, 35(6), 481–498. See also Taylor & Rohrer (2010): http://uweb.cas.usf.edu/~drohrer/pdfs/Taylor&Rohrer2010ACP.pdf
• Pashler, H., McDaniel, M., Rohrer, D., & Bjork, R. (2008). Learning styles: Concepts and evidence. Psychological Science in the Public Interest, 9(3), 105–119.
• Pashler, H., et al. (2007). Organizing Instruction and Study to Improve Student Learning (IES Practice Guide). Institute of Education Sciences. https://eric.ed.gov/?id=ED498555
• The Learning Scientists. Six strategies for effective learning. http://www.learningscientists.org/blog/2016/8/18-1
• Cornell University Learning Strategies Center. Effective study strategies. https://lsc.cornell.edu/how-to-study/studying-for-and-taking-exams/effective-study-strategies/

All sources checked 28 October 2026.

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Start with one change this week: pick your hardest subject, learn one topic properly, then close the book and test yourself on it tomorrow and again in three days. That single loop (test, space, repeat) is the top of the research table in action. For more guides built the same way, from exam timetables to scholarship lists, follow the SchoolCrib newsletter and browse our Study Skills & Careers category.