This supports the observations made by Dr. Piotr Wozniak, inventor of spaced-repetition algorithms, from anonymous data gathered from users of all ages: childre

This supports the observations made by Dr. Piotr Wozniak, inventor of spaced-repetition algorithms, from anonymous data gathered from users of all ages: children up to around age 7 have poorer-memory than adults because their brains are focused on rewiring.