Ebenhaus forgetting curve and memory retention

Ebenhaus quantified forgetting by memorizing arbitrary pieces of information and measuring how much is forgotten over time. According to the Ebenhaus forgetting curve, around 60% of information is lost within 24 hours of learning it. Forgetting accelerates in the initial period after learning, tapering off over time. To improve memory retention, it is suggested to recall learned information within the same day to counteract rapid forgetting but also allow time for memory consolidation.