How to Remember Things: 12 Proven Memory Techniques

Quick Answer: The most effective memory techniques, ranked by impact: (1) spaced repetition — review material at expanding intervals; (2) active recall — close the book and test yourself instead of re-reading; (3) elaborative encoding — connect new information to what you already know; (4) the Feynman technique — explain it simply as if teaching a child; (5) interleaving — alternate between related topics instead of blocking; (6) dual coding — combine words with images or diagrams. Used together, these compound into dramatically better retention than any single technique alone.

Why We Forget (And What to Do About It)

The human brain isn't designed to remember everything. In fact, psychologist Hermann Ebbinghaus demonstrated in the 1880s that we forget roughly 70% of new information within 24 hours — a phenomenon known as the forgetting curve. This isn't a flaw. Your brain is constantly triaging what matters and what doesn't. The problem is that the default criteria — emotional intensity, repetition, survival relevance — don't always align with what you want to remember.

The good news: you can override these defaults. Decades of cognitive science research have identified specific techniques that dramatically improve how well you retain information, whether you're studying for an exam, reading a non-fiction book, or trying to retain things from a lecture. For a deeper background on the science, see our list of the best books on memory and learning.

Here are 12 proven techniques for how to remember things better, ordered from most to least impactful.

1. Spaced Repetition

Spaced repetition is the single most powerful memory technique available. Instead of cramming information in one session, you review it at gradually increasing intervals — after 1 day, then 3 days, then a week, then a month.

This works because each time you successfully recall something at the point of almost forgetting, the memory gets significantly stronger. Research consistently shows that spaced repetition can improve long-term retention by 200% or more compared to massed practice.

How to implement it: Use a tool like Chapterly (for book highlights and reading notes) or Anki (for general flashcards; see how the two compare) that schedules reviews automatically using spaced repetition algorithms.

2. Active Recall

Instead of passively re-reading or re-watching material, actively test yourself on it. Close the book and try to recall the main points. Write down everything you remember before checking your notes. Quiz yourself.

This is called active recall, and it's one of the most well-supported findings in learning science. The act of retrieving information from memory — even when it's difficult — strengthens the neural pathways that store it.

How to implement it: After finishing a chapter or lecture section, pause and write down the key ideas from memory. Then check what you missed. This retrieval practice is far more effective than highlighting or re-reading. The blurting method gives this step a concrete protocol: set a 5-minute timer, write everything you can recall on a blank page, then open the book to check gaps.

3. Elaborative Interrogation

When you encounter a new fact or concept, ask yourself "Why?" and "How?" Why does this work this way? How does this connect to what I already know?

This technique forces your brain to build connections between new information and your existing knowledge network. The more connections a memory has, the easier it is to retrieve.

How to implement it: When taking notes from books, don't just write down what the author says. Add your own questions, reactions, and connections to other ideas.

4. The Feynman Technique

Named after physicist Richard Feynman, this technique involves explaining a concept in simple language, as if teaching it to a child. When you hit a gap in your explanation, you've found a gap in your understanding.

Teaching (or pretending to teach) activates deep processing. You can't explain something you don't truly understand, so the act of explaining forces genuine comprehension, which leads to stronger memories.

How to implement it: After reading a chapter, explain the main concept aloud in your own words. If you stumble, go back to the source and fill in the gaps.

5. Chunking

Your working memory can only hold about 4-7 items at once. Chunking groups individual pieces of information into meaningful clusters, effectively compressing data so your memory can handle more.

Phone numbers are chunked into groups (555-867-5309 rather than 5558675309). You can apply the same principle to any information — group related concepts, create categories, build hierarchies.

How to implement it: When studying a topic, organize information into 3-5 main themes or categories. This creates a mental filing system that makes individual facts easier to store and retrieve.

6. Dual Coding

Combine verbal and visual representations of information. When you both read about a concept and visualize it (through diagrams, mind maps, or mental imagery), you create two separate memory traces instead of one.

Research shows that information encoded both verbally and visually is significantly easier to recall than information encoded in only one format.

How to implement it: Draw diagrams, create mind maps, or sketch visual representations alongside your written notes. Even rough doodles help.

7. The Testing Effect

Taking a test on material — even before you've fully learned it — improves retention more than spending the same time studying. This is different from active recall in that testing introduces the element of judgment and feedback.

The testing effect works even when you get answers wrong, as long as you receive corrective feedback afterward. Incorrect guesses followed by corrections can actually lead to stronger memories than never making the error at all.

How to implement it: Create practice quizzes for yourself. Use flashcard apps that test you and provide immediate feedback.

8. Interleaving

Instead of studying one topic exhaustively before moving to the next (blocked practice), mix different topics or types of problems within a single study session. This feels harder and slower, but it produces dramatically better long-term retention.

Interleaving forces your brain to constantly practice selecting the right approach, which builds the kind of flexible knowledge that transfers to real-world situations.

How to implement it: When reviewing material from multiple books or subjects, alternate between them rather than finishing one completely before starting another.

9. Sleep Consolidation

Sleep plays a critical role in memory consolidation. During deep sleep, your brain replays and strengthens the neural connections formed during the day, transferring information from short-term to long-term storage.

Studying before sleep — and getting adequate sleep afterward — is one of the simplest ways to improve how well you remember things.

How to implement it: Review your most important material in the evening before bed. Prioritize 7-9 hours of sleep, especially when learning new material.

10. Emotional Connection

Information tied to emotional experiences is remembered far better than neutral information. This is why you vividly remember your wedding day but not last Tuesday's lunch.

You can leverage this by finding personal relevance in what you're learning. How does this concept affect your life? What would change if you applied it?

How to implement it: When reading, actively connect ideas to your personal experiences, goals, or challenges. The Chapterly AI discussion feature helps by asking questions that connect book concepts to your real life.

11. Method of Loci (Memory Palace)

This ancient technique involves associating information with specific locations in a familiar place (like rooms in your house). To recall the information, you mentally "walk through" the space, encountering each item in sequence.

While it takes practice, the method of loci is remarkably effective for remembering ordered lists, speeches, and sequential information.

How to implement it: Choose a familiar route or building. Assign each piece of information to a specific location along the path. Make the associations vivid and unusual — the stranger the image, the more memorable.

12. Physical Exercise

Regular aerobic exercise increases blood flow to the hippocampus (the brain's memory center) and promotes the growth of new neurons. Studies show that people who exercise regularly perform significantly better on memory tests.

Even a single bout of moderate exercise before a study session can improve focus and retention.

How to implement it: Aim for 30 minutes of moderate exercise before studying or reading. Even a brisk walk counts.

Building a Complete Memory System

No single technique is a silver bullet. The most effective approach combines several methods into a complete reading and learning system:

Engage actively with material using elaborative interrogation and the Feynman technique
Capture key ideas using effective note-taking methods
Review systematically using spaced repetition
Test yourself through active recall and practice quizzes

This is exactly what Chapterly automates for readers: AI discussion after every chapter (active engagement), organized highlight capture (note-taking), and scheduled spaced repetition reviews (systematic review).

Frequently Asked Questions

What is the most effective way to remember things long-term?

The single most effective method is retrieval practice combined with spaced repetition. Test yourself on the material at increasing intervals — one day, three days, one week, one month — instead of re-reading. This combination consistently produces 50-80% better long-term retention than any passive review technique in cognitive science studies.

How can I remember everything I read in a book?

You cannot — and should not try to. Your brain is designed to forget what it does not use. Instead, decide before each chapter what is worth remembering (one to three key ideas), capture those as highlights or notes, and put them through spaced review. Trying to remember every detail dilutes your attention and makes you remember less of what matters.

Why do I forget things I just read minutes ago?

This is usually a working memory problem, not a long-term memory problem. Working memory holds about four items at once. When you read passively while distracted (phone, multiple tabs, fatigue), nothing transfers from working memory into long-term storage. Slow down, summarize each section before moving on, and remove the distractions — that single change typically doubles immediate retention.

Does the memory palace technique actually work for books?

It works for ordered lists, speeches, and sequenced facts, but it is overkill for most book reading. Memory palaces require time to construct and maintain. For nonfiction reading, active recall and spaced repetition deliver similar retention gains with less effort. Reserve the memory palace for material you specifically need to recite from memory.

Are memory supplements or nootropics worth using?

The evidence for cognitive enhancement supplements is weak. Adequate sleep (7-9 hours), regular cardiovascular exercise, and managing stress have far larger effects on memory than any supplement studied to date. If your retention is suffering, audit those three variables before considering anything else.

How long does it take to build a strong memory habit?

Most readers notice improvement within two weeks of daily retrieval practice. The habit itself takes about 6-8 weeks to feel automatic. The biggest predictor of success is not the technique you choose but the consistency of practice — five minutes a day beats an hour once a week.