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Learning Theory and Concepts

Forgetting Curve

Memory, Retention and Retrieval Strategies

The Ebbinghaus forgetting curve measures the decline of memory retention over time, showing how newly learned information is lost when no attempt is made to retain it, typically losing about half of what was learned within days or weeks without conscious review. A related concept is the strength of memory, referring to how durable a given memory trace is in the brain.

Facts
Core Claim
Humans tend to halve their memory of newly learned knowledge in a matter of days or weeks unless they consciously review the learned material. 1
Origin Year
1885 1
Sources
1. Wikipedia: Forgetting curve
Wikimedia Foundation
  • Lead section, sentence on the 1880 to 1885 Ebbinghaus study and 1885 publication
    From 1880 to 1885, Hermann Ebbinghaus ran a limited, incomplete study on himself and published his hypothesis in 1885
  • Lead section, sentence on halving memory of newly learned material
    humans tend to halve their memory of newly learned knowledge in a matter of days or weeks unless they consciously review the learned material
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