How to Memorize Faster

Why some methods are fast and some only feel fast

Your brain does not store a fact because you looked at it. It stores a fact because you used it: pulled it back out, connected it to something, or did something with it. Methods that make you work feel slower and harder in the moment, and they are the fast ones over a week. Methods that feel smooth, such as re-reading and highlighting, are the slow ones, because they leave the page familiar and the memory empty.

So the fastest route is not the most comfortable one. Choose the methods in the right-hand column and accept that they feel like effort. That effort is the memory forming.

Step 1: understand it first

A fact you understand is a fact with handles. "The mitochondrion makes the cell's energy" is one idea; "mitochondrion" on its own is a random string of letters. Before you memorize anything, spend two minutes making sure you can say what it means and why it matters, in plain words, to an imaginary ten-year-old.

• Ask "what is this an example of?" and "what does it connect to?" A formula is easier to hold once you know what each symbol stands for and when you would use it.
• Find the pattern in a list. Dates, elements, kings, bones and verb endings almost always have an order, a cause or a shape. Learn the pattern and the items hang from it.
• If you cannot explain it, you are not ready to memorize it. Read one more source, or ask someone, then come back.

Vocabulary and pure facts, such as a capital city or a chemical symbol, have less to understand. For those, go straight to steps 2 to 4 and lean on step 5.

Step 2: test yourself, do not re-read

This is the biggest single change most learners can make. Reading the material again feels like studying. Pulling it back out of your head is studying.

1. Read a short section once, with attention. A paragraph, a definition, a formula, ten words. Not a chapter.
2. Close it and produce it. Say it out loud, write it down, or sketch it. Out loud is best when you can: you hear your own gaps.
3. Check, and mark what you missed. Open the page. Fix the mistake right away, in your own words, then close it and try the missed part again.
4. Turn the misses into questions. One question per fact, on paper or a card: the question on the front, the answer on the back. These are your review set for the next days.

Getting it wrong is not a failure of the method. A wrong answer that you then correct is remembered better than a right answer you never had to produce.

Step 3: space the reviews

Memory fades fast in the first hours and more slowly after that. If you review a fact just as it starts to fade, you reset the fade and make the next one slower. Review it ten times in one evening and most of those ten are wasted, because the fact had not faded yet.

Each review is a self-test, never a re-read: cover the answer, produce it, check. Anything you get right twice in a row can wait longer; anything you miss goes back to tomorrow. Flashcards, paper or app, exist to do exactly this sorting for you.

Step 4: chunk long lists

Working memory holds about four things at once. A list of twenty items is five lists of four. Learn them that way.

• Group by meaning first, then by sound or position if there is no meaning. Twenty irregular verbs become "the ones that change the vowel", "the ones that do not change", "the odd ones".
• Learn one group until you can recite it, then add the next. Then recite both. Then add the third. Always recite from the beginning, so the early groups get the most repetitions and the later groups get attached to them.
• Give each group a label. The label is what you recall first; the items follow it.
• For a sequence, such as a process or a formula derivation, learn the first and last steps first. The middle fills in once the ends are fixed.

Step 5: give the stubborn facts a hook

Some facts refuse to stick: a name, a number, a word with no pattern. For those, link the new fact to something your memory already holds. The sillier and more vivid the link, the better it works.

A hook is a bridge, not a home. Once you have recalled the fact a few times over a few days, you will stop needing the image. That is the hook doing its job.

Step 6: sleep, breaks and moving around

• Sleep is part of the method. Memories formed in the day are strengthened during the night. Learning until 2 am and sitting an exam at 9 am loses more than the extra hours gained. Study, then sleep, then one short recall in the morning.
• Short sessions beat long ones. Twenty to forty minutes on one thing, then a short break away from the screen. Attention fades long before you notice it.
• Mix topics within a day. Two sessions on two subjects remember better than one long session on one. The switch forces you to recall, not to coast.
• Say it out loud and walk while you do it, when you can. Speaking and moving add more routes to the same memory.

A worked example: forty terms in one week

Daniel has a biology test next Monday with forty terms to know, from "osmosis" to "endoplasmic reticulum". Here is the week that works, in about twenty-five minutes a day.

• Monday. Reads the forty terms once with their meanings, says each one in his own words, and groups them into eight sets of five by topic (cell parts, transport, energy, division, and so on). Makes a card for each term. Covers each set and recites it; marks the ten he misses.
• Tuesday. Runs all forty cards from the question side, out loud. Gets twenty-six right. Makes a hook for the four worst: the endoplasmic reticulum becomes a factory conveyor belt wrapped around the nucleus, with "reticulum" as "a net of belts".
• Wednesday. Only the fourteen cards he missed, twice, then the whole deck once. Thirty-four right.
• Thursday. Rest from biology; studies another subject. The gap is on purpose.
• Friday. Whole deck once. Thirty-eight right; the two misses go into a fresh hook each.
• Saturday. Explains the eight groups to his sister in two minutes each, without notes. She asks what the Golgi body does; he cannot say, and that gap goes on a card.
• Sunday. Whole deck, forty out of forty. Sleeps on time.
• Monday morning. Five minutes on the deck before school. He knows them because he recalled them on six separate days, not because he read them for six hours.

Total time: about three hours across the week. The same three hours spent re-reading the chapter on Sunday night would have left him with the ten he already knew.

The mistakes that make memorizing slow

• Re-reading and highlighting. Familiar is not remembered. Test yourself.
• Memorizing before understanding. Meaningless facts take many times more repetitions. Spend two minutes on meaning first.
• Doing all the reviews in one evening. Ten repetitions in one night are worth about two. Spread them over days.
• Studying the cards you already know. It feels good and changes nothing. Sort the deck and spend your time on the misses.
• Trying to hold the whole list at once. Groups of three to five, one group at a time, reciting from the start.
• Trading sleep for hours. Sleep is when the day's learning is written down. Protect it, especially the night before.
• Multitasking. A phone on the desk halves the value of the session. Put it in another room for twenty minutes.

Frequently asked questions