You beat the forgetting curve by reviewing what you learn at spaced intervals and by testing yourself during those reviews instead of just rereading. Each well-timed review makes the memory last longer, so the gaps between reviews can grow from a day to a week to a month. Spaced repetition apps automate that timing for you.
Here's what the forgetting curve is, why it happens, and a practical review schedule you can start using today.
What Is the Forgetting Curve?
The forgetting curve describes how quickly we lose new information when we don't review it. German psychologist Hermann Ebbinghaus first measured it in 1885 by memorizing lists of nonsense syllables and testing himself after different delays. He found that forgetting is fastest right after learning and then slows down over time.
A 2015 replication by Jaap Murre and Joeri Dros, published in PLOS ONE, found a curve very similar to the original more than 100 years later. The exact numbers depend on what you're learning and how well you learned it, but the shape holds: a steep drop in the first day or two, then a slower fade.
For a deeper look at why students forget so much after exams, see why students forget after exams.
Why We Forget So Quickly
Your brain doesn't keep everything. Information you meet once and never use again is treated as low priority. When you retrieve a memory, especially after a delay, it becomes more durable and easier to reach next time. That's why both timing and effort matter.
It also explains why cramming feels like it works. You can hold a lot in memory for a test the next morning, but most of it is gone within days because it was never reviewed again.
How Spaced Repetition Beats the Forgetting Curve
Spaced repetition means reviewing material at increasing intervals, ideally just before you'd forget it. Each review resets the curve and makes it flatter, so you forget more slowly the next time.
The research here is strong. A 2006 meta-analysis by Nicholas Cepeda and colleagues, covering hundreds of comparisons, found that spreading study out over time led to better long-term retention than massing it into one session. A 2013 review of study techniques by John Dunlosky and colleagues rated distributed practice as one of only two "high utility" strategies, along with practice testing.
A Simple Review Schedule
| Review | When | What to do |
|---|---|---|
| 1 | Same day or next day | Quiz yourself on everything from the lesson |
| 2 | About 3 days later | Quiz again and focus on what you missed |
| 3 | About 1 week later | Quick self-test; skip what's easy |
| 4 | 2 to 3 weeks later | Mixed practice with other topics |
| 5 | Before the exam | Final check on weak spots |
Treat these intervals as a starting point. Items you keep missing should come back sooner, and items you always get right can wait longer. That's exactly what spaced repetition software adjusts for you.
Tips to Make Each Review Count
- Test, don't reread. Answer from memory first, then check. Retrieval is what makes the review stick.
- Keep reviews short. Ten to fifteen minutes of focused recall beats an hour of skimming.
- Review a little every day. Daily short sessions keep the workload from piling up.
- Mix topics. Once you know the basics, shuffle subjects together so you practice choosing the right approach.
- Learn it well the first time. Material you understand clearly fades more slowly than material you only half followed.
Why Teens and Students Forget So Fast
School often expects you to learn something once and still know it weeks later at finals. That clashes with how memory works. Your brain keeps what shows up again and again and lets go of what it meets only once. This isn't a flaw. It's how your brain avoids filling up with things you never use.
Why cramming feels like it works
Cramming does work in the short term. If the quiz is tomorrow morning, a late session can get you through it. But that memory has had no spaced review, so it fades quickly. That's why so much of what you crammed last year feels gone now. If your goal is tomorrow's quiz, cramming can get you there. If your goal is finals, entrance exams or the next course, it won't.
Three more ways to flatten the curve
- Test yourself early and often. Practice questions don't just check what you know. The act of testing strengthens memory, which researchers call the testing effect. See quizzing yourself while studying.
- Get enough sleep. Sleep helps move what you learned into long-term memory. Pulling an all-nighter skips that step.
- Mix related topics. Switching between algebra, geometry and word problems in one session feels harder but builds more flexible memory than drilling one type for hours.
How GoodOff Helps You Beat the Forgetting Curve
Keeping track of when to review every card by hand gets tedious fast. GoodOff schedules your flashcards with FSRS, a modern spaced repetition algorithm that uses your review history to decide when each card should come back. You can read more about it in what is FSRS.
You can upload notes, PDFs, or slides and GoodOff turns them into editable flashcards and a quiz. You can also import existing Quizlet or Anki sets. If you have an exam coming up, the exam plan breaks your reviews into daily sessions sized to the time you have left. It works on iOS, Android, and the web.
Frequently Asked Questions
How fast do we forget new information?
Forgetting is fastest in the first day or two after learning, then slows down. How much you keep depends on how meaningful the material is and how well you learned it.
Can you stop the forgetting curve completely?
Not completely, but you can flatten it a lot. Each spaced review makes the memory more durable, so you need fewer reviews over time.
What is the best spaced repetition interval?
There's no single best interval. A common starting pattern is one day, three days, one week, then a few weeks, adjusted based on whether you got each item right.
Is cramming ever useful?
Cramming can help a little for a test the next day, but you'll forget most of it soon after. If you need the material later in the course, spaced review is much better.
Why do teenagers forget what they study so quickly?
Mostly for the same reason everyone does: information studied once and not revisited fades fast. Short, spaced reviews and self-testing help teens keep far more.
Start Your First Spaced Review
Look at what you learned today and plan your first review for tomorrow. Put it on your calendar or let an app handle it. For a full walkthrough, read our guide to spaced repetition, or upload your notes to GoodOff and let it schedule your reviews.
