What is referred to as the curve that illustrates the relationship between time and relearning efficiency?

The term that describes the curve illustrating the relationship between time and relearning efficiency is known as the savings curve. This concept originates from the work of Hermann Ebbinghaus, who studied memory and forgetting. The savings curve reflects how much quicker a person can relearn information that has been previously learned compared to the first time learning it. Essentially, it demonstrates that the time taken to relearn information decreases with repeated exposures, indicating a form of retention or savings in memory.

On the other hand, the learning curve represents how learning improves with practice and experience over time. The forgetting curve illustrates how memory retention declines over time without rehearsal, while the recall curve relates to the ability to retrieve learned information after a given delay. Each of these concepts is important in cognitive psychology but serves a different function in understanding memory and learning processes.