How to Study Effectively: 10 Techniques That Actually Work

Color-coded highlighters, copied-out notes, hours of rereading before an exam: a major 2013 review of study techniques rated both rereading and highlighting in the lowest-utility category researchers tested.

Good news is, the techniques that actually work take less effort than the ones you have been grinding through.

That same review found practice testing and spaced review at the top of the list, and swapping into them is what separates students who study for hours and forget everything from students who study less and retain more. Learning how to study effectively is not about adding hours. It is about swapping in the handful of methods cognitive science keeps confirming.

By the end of this guide you will know how to use active recall, spaced repetition, and the Feynman technique, plus where sleep and focus fit into the mix.

10 Techniques at a Glance

1. Use active recall instead of rereading

The single highest-yield change you can make is to close the book and try to remember, rather than reading the same page again.

This is active recall, and it is one of the most reliable findings in learning research. In a 2011 study published in Science, Karpicke and Blunt found that students who practiced retrieving what they had read clearly outperformed students who simply restudied it. Pulling information out of your head beats putting it back in front of your eyes.

The difficulty is the point. Every time you struggle to recall something and succeed, you strengthen the path back to it. In practice:

• After each section, shut the book and write down the key ideas from memory.
• Turn headings into questions, then answer them without looking.
• Use flashcards where the front is a real question, not a single word.

If you want the full mechanics of this method, see our guide to active recall study techniques.

2. Space your reviews with spaced repetition

Recalling something once helps. Recalling it again days later, then a week after that, is what makes it permanent.

This is spaced repetition, and it works directly against forgetting. In the 1880s, Hermann Ebbinghaus mapped the forgetting curve: memory for new material decays fast at first, then levels off. Each well-timed review flattens that curve a little more.

A 2006 review by Cepeda and colleagues analyzed hundreds of experiments and confirmed that spreading reviews out beats bunching them together, often by a wide margin. The same total study time produces far more lasting memory when it is distributed.

A simple schedule for any new topic:

• Day 1: learn it and recall it once.
• Day 2: recall again.
• Day 7, then Day 21: recall again.

Apps like Anki automate the timing, but a paper schedule works just as well. Our breakdown of how spaced repetition works covers the intervals in detail.

3. Explain it with the Feynman technique

If you cannot explain a concept in plain language, you do not understand it yet, you only recognize it.

The Feynman technique turns that gap into a study tool. Named after physicist Richard Feynman, the method has four steps:

1. Pick a concept and write its name at the top of a blank page.
2. Explain it as if teaching a 12-year-old, in your own words, no jargon.
3. Wherever you stumble or reach for the textbook, you have found a gap.
4. Go back, fill the gap, and simplify the explanation again.

The power is in step three. Plain-language explanation exposes the exact spots where your understanding is thin, which rereading hides. Walk through a worked example in our guide to the Feynman technique.

4. Interleave topics instead of blocking them

Most students study in blocks: all of topic A, then all of topic B. Mixing them is harder and works better.

This is interleaving, and the difficulty is again the mechanism. In a 2007 study by Rohrer and Taylor, students who interleaved different problem types during practice scored far higher on a later test than students who practiced one type at a time, despite performing worse during the practice itself.

Interleaving forces your brain to repeatedly choose which method or concept applies, which is exactly the skill an exam demands. To apply it:

• Mix related problem types in one session rather than drilling one kind.
• Rotate between two or three subjects instead of marathoning a single one.
• Shuffle your flashcards so the order is never predictable.

5. Test yourself under real conditions with practice testing

Active recall on small chunks builds memory. Practice testing under full exam conditions builds performance.

The two are related but not the same. Recall is something you do while learning a section; a practice test simulates the real thing end to end. This produces the testing effect: the act of being tested improves later retention more than equal time spent studying, a result confirmed across more than 100 years of experiments in a 2006 review by Roediger and Karpicke.

Do it properly:

• Use past papers or end-of-chapter questions, timed, with no notes.
• Mark honestly against the answer key.
• Treat every wrong answer as a map of what to review next.

6. Apply spacing within a single topic

Spaced repetition schedules reviews across days. Spacing is the same principle applied inside one topic, and it changes how you sit down to study.

Instead of one three-hour block on a chapter, three one-hour sessions across three days produce more durable memory for the same total time. The pauses let the memory partly fade, so each return session does real work rebuilding it rather than coasting on what is still fresh.

In practice, spacing means:

• Break long sessions into shorter ones across multiple days.
• Plan revision to start weeks before an exam, not the night before.
• Accept that a small amount of forgetting between sessions is helping you.

7. Stop passive rereading and highlighting

The two most popular study habits are also among the least effective, and dropping them frees hours.

A landmark 2013 review by Dunlosky and colleagues rated ten common study techniques. Rereading and highlighting both landed in the lowest-utility category, while practice testing and spacing scored highest. The problem is the fluency illusion: rereading makes text feel familiar, and that smoothness gets mistaken for understanding.

Highlighting is worse than neutral, because it lets you feel productive while doing almost no thinking. If you rely on either:

• Replace rereading with closing the book and recalling.
• Replace highlighting with writing a one-line summary of each section in your own words.
• Reserve passive reading for the first pass only, never for revision.

For turning that first read into something that sticks, see our guide on how to remember what you read.

8. Read your material more efficiently

How well you study depends on how well you read in the first place, and dense textbooks defeat most students before recall ever begins.

The fix is structure, not raw speed. Previewing headings, summaries, and questions before reading gives your brain a frame to hang detail on, so less slips away. A quick free reading speed test shows where you stand today and what a realistic target looks like.

For coursework specifically, our guide to reading textbooks faster covers previewing, marking up, and pulling out the few sentences per page that actually carry the argument.

9. Protect your focus while studying

None of these methods survive a study session spent half-watching your phone. Attention is the input, and divided attention quietly wrecks retention.

Research on media multitasking, including work by Uncapher and Wagner summarized in PNAS, links heavy multitasking with measurably worse performance on memory tasks. Every switch between study and a notification carries a hidden cost in time and accuracy.

To hold your focus:

• Work in focused blocks of 25 to 50 minutes, then take a real break.
• Put your phone in another room, not face-down on the desk.
• Keep one tab, one notebook, one task open at a time.

10. Sleep on it to lock memory in

Studying without sleeping on it is like writing in a notebook you then throw away.

Sleep is when memory moves from fragile short-term storage into durable long-term storage, a process called consolidation. A 2007 paper in Current Biology by Marshall and Born describes how slow-wave sleep actively strengthens newly learned material. Pulling an all-nighter trades away the exact biological step that makes studying stick.

Make sleep part of the method:

• Review the hardest material shortly before bed, then sleep on it.
• Protect seven to nine hours, especially the night after heavy learning.
• Treat the night before an exam as study time, because it is.

Key takeaways

• Active recall and practice testing beat rereading and highlighting in nearly every study comparing them.
• Spacing and spaced repetition turn the same total hours into far more lasting memory.
• The Feynman technique exposes gaps that passive review hides.
• Interleaving mixed topics is harder during practice and stronger on the test.
• Focus and sleep are not extras; they are what let everything else work.

The fastest win is to start tomorrow's session by recalling today's, then test yourself on a free reading speed test to see how efficiently you take material in.