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Ebbinghaus Forgetting Curve Retention Rates

A line graph representing the Ebbinghaus forgetting curve shows the relationship between elapsed time since learning and memory retention percentages. The data demonstrates a rapid initial decline in retention that eventually levels off. The approximate data points are: 100% retention at 0 minutes, 55% at 20 minutes, 40% at 60 minutes, 37% at 9 hours, 30% at 24 hours, 25% at 48 hours, 20% at 6 days, and 10% at 31 days.

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Updated 2026-05-04

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