A graph demonstrating the rate at which information is forgotten. Vertical (y) axis: Percentage retained on a scale from 0 to 100; Horizontal (x) axis represents the retention interval and ranges from 20 minutes to 31 days. A steep drop from 100 to 40% retention occurs between 20 and 60 minutes followed by a gradual decline between 60 minutes and 31 days with only 10% retention remaining at the 31 day mark.
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