Chapter 03 of 5
Why Spacing Works
The science of remembering for good — and why cramming fails.
- The Effect
Spread it out
Studying something in several shorter sessions spread over time beats the same amount of study crammed into one go. It's called the spacing effect.
- Evidence
One of the strongest findings
The spacing effect has been found in hundreds of studies, across ages, subjects and even other animals.
- Cramming
Good for tomorrow only
Cramming can get you through a test the next day. But what's crammed is forgotten much faster afterwards.
17 more cards in this chapter
Could you answer this?
In the Leitner flashcard system, what happens to a card you answer wrongly?
🧩 How Memory Works (and Fails)
- 01The Man Who Couldn't Make MemoriesOne patient's surgery revealed where new memories are made.
- 02The Forgetting CurveThe man who measured his own forgetting — and what he found.
- 03Why Spacing WorksThe science of remembering for good — and why cramming fails.
- 04Memories That Never HappenedWhy vivid, confident memories can still be wrong.
- 05The Memory PalaceAn ancient trick that lets ordinary people remember extraordinary amounts.