The Applicability of Spaced Repetition
Spaced repetition is effective for memorizing systematically organized information, such as language vocabulary and medical facts. However, it becomes challenging when applied to highly conceptual knowledge, like mathematics, where understanding and building a mental model is necessary. The article suggests that while there may be limitations to spaced repetition in these domains, there is potential for improvement through case studies and better encoding strategies.
- ▪Spaced repetition works well for information that is organized as key-value mappings.
- ▪Highly conceptual knowledge is difficult to encode into flashcards, requiring a deeper understanding first.
- ▪There is a need for case studies that explore how to effectively turn complex texts into flashcards.
Opening excerpt (first ~120 words) tap to expand
Spaced repetition has a natural domain of applicability: information that is systematically organized as an unambiguous key-value mapping with short keys and values. The “Hello, world!” of flashcards is the NATO phonetic alphabet: A → alpha, B → bravo, etc. Similarly, the periodic table can be thought of as defining a collection of mappings: element name ↔ symbol, element name ↔ atomic number, etc. You can just drill these cards and memorize the facts without a prior step of understanding, or building a conceptual model. Applying spaced repetition is trivial for this kind of information. That’s why most people who use spaced repetition are either language learners or medical students.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at Fernando Borretti.
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