Spaced repetition is one of the most scientifically-backed learning techniques. It leverages the spacing effect, a cognitive phenomenon where information is better remembered when reviewed at increasing intervals.
The Science of Memory
Our brains are designed to forget. Without reinforcement, we lose about 70% of new information within 24 hours. Spaced repetition combats this 'forgetting curve' by timing reviews at the optimal moment before information fades from memory.
How It Works in Practice
- Each card has an 'easiness factor' that adapts to your performance
- Difficult cards appear more frequently; easy cards less often
- Review intervals grow exponentially with successful recalls
- The algorithm optimizes for long-term retention, not short-term memorization
Making It Work For You
Good flashcards are concise and test one concept at a time. Review daily, even if just for 10 minutes. Trust the algorithm and resist the urge to over-study cards you know well.
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