Cite this article as: Praveen Shrestha, “Ebbinghaus Forgetting Curve,” in Psychestudy, November 17, 2017, https://www.psychestudy.com/cognitive/memory/ebbinghaus-forgetting-curve. Ebbinghaus forgetting curve describes the decrease in ability of the brain to retain memory over time. The issue was hypothesized by Hermann Ebbinghaus in 1885, which is why it’s called Ebbinghaus forgetting curve. The theory is that humans start losing the memory of learned knowledge over time, in a matter of days or weeks, unless the learned knowledge is consciously reviewed time and again. A related concept to the forgetting curve is strength of memory, which states that the time period up to which a … Continue reading Ebbinghaus Forgetting Curve