Memory Digest

Study Smarter: Memory Science for Students

Rereading and highlighting feel productive but don't stick; memory research shows that testing yourself, spacing out study sessions, mixing topics and sleeping well work far better, at any age.

Last reviewed: October 2026

Most students study the way they were never taught not to: rereading notes, highlighting and cramming the night before. These feel productive because the material starts to look familiar. But familiarity isn't the same as being able to recall something on a test, or years later. Decades of memory research point to a handful of techniques that work much better. They help high school and college students, adult learners and anyone picking up a new skill later in life (see Learning New Skills at Any Age).

1. Test yourself (retrieval practice)

The single most powerful study habit is pulling information out of your memory, not putting it back in. Every time you successfully recall something, you strengthen the memory and make it easier to find next time. Researchers call this the testing effect or retrieval practice.

How to do it:

• Close the book and write down everything you remember, then check what you missed.
• Use flashcards, and actually say or write the answer before flipping.
• Answer practice questions at the end of chapters, or make your own.
• Explain the idea out loud to a friend, a pet or an empty room.

It feels harder than rereading, and that effort is the point. Getting an answer wrong and then checking it still helps, as long as you see the correct answer.

2. Space it out

Studying the same amount of time spread across several days beats one long session. This is the spacing effect, and it's one of the most reliable findings in psychology. Forgetting a little between sessions and then relearning makes the memory more durable (see Spaced Repetition).

A simple schedule: review new material the next day, then a few days later, then a week later, then before the exam. Flashcard apps that use spaced repetition handle the timing automatically.

3. Mix it up (interleaving)

Instead of doing 20 problems of the same type in a row, mix different types together. For example, in math, alternate between problems that need different formulas. Mixing forces your brain to figure out which approach to use, which is exactly what a test asks you to do. It feels slower and messier, but people usually remember more and transfer it better.

4. Ask "why" and "how"

Connect new facts to what you already know. Asking yourself why something is true, or how two ideas relate, builds richer memories than memorizing isolated facts. This is sometimes called elaboration. Making a simple diagram, timeline or concept map can help.

5. Combine words and pictures

Pairing a written explanation with a visual such as a diagram, chart or sketch gives your memory two ways in. Drawing it yourself is even better than looking at one.

6. Use memory tricks for lists

For lists and unfamiliar terms, mnemonics really do help: acronyms, rhymes, vivid images or the "memory palace," where you picture items placed along a familiar route. See Memory Techniques: Mnemonics and Memory Palaces.

7. Protect your attention

Multitasking hurts learning. Studying with your phone buzzing or a show playing means your brain is constantly switching, and less gets stored (see Focus, Attention and Multitasking).

• Put your phone in another room or use a focus app.
• Work in blocks of 25 to 50 minutes with short breaks.
• Start with the hardest material while you're fresh.

8. Sleep is part of studying

Memories are consolidated during sleep, especially new facts and skills. Pulling an all-nighter before an exam trades long-term memory for a few extra hours of exposure, and often hurts performance the next day too. Studying in the evening and then getting a full night's sleep is a better plan (see Sleep and Memory).

9. Move your body

Regular physical activity supports attention, mood and the brain areas involved in memory (see Exercise and the Brain). A short walk between study blocks can help you refocus.

What doesn't work as well

• Rereading and highlighting on their own give a false sense of mastery.
• Cramming can get you through tomorrow's quiz but is quickly forgotten.
• "Learning styles" (the idea that you learn best only by seeing, hearing or doing) are not supported by research. Everyone benefits from a mix.
• Brain-training games improve your score in the game more than real-world learning (see Do Brain Games Work?).

A sample week

1. Day 1: Learn new material in class. That evening, spend 10 minutes writing down what you remember.
2. Day 2: Make flashcards or practice questions; test yourself.
3. Day 4: Mixed practice with this week's and last week's topics.
4. Day 7: Explain the main ideas from memory, then check your notes.
5. Before the test: A final self-test, not a reread, followed by a good night's sleep.

When it's more than study habits

If you work hard with good strategies and still struggle to focus or remember, talk to a doctor or school counselor. Attention problems, learning differences, depression, anxiety, poor sleep and some medications can all affect memory, and help is available (see Stress, Anxiety and Memory and Medications That Can Affect Memory).

The bottom line

Study less like a reader and more like a test-taker: recall, space it out, mix it up, connect ideas and sleep on it. These habits take a little more effort, but they're the ones that make knowledge stick.

Sources

1. Institute of Education Sciences, What Works Clearinghouse: Organizing Instruction and Study to Improve Student Learning (Practice Guide)
2. American Psychological Association: Retrieval practice (Psychology Teacher Network)
3. RetrievalPractice.org (Pooja K. Agarwal, Ph.D.)

Not medical advice. This article is general information, not a diagnosis or treatment plan for any individual. Talk with a doctor about your situation.

Related articles

• Spaced Repetition
• Memory Techniques: Mnemonics and Memory Palaces
• How to Improve Your Memory
• Focus, Attention and Multitasking
• Sleep and Memory