Final answer:
A relearning measure of retention details how much quicker a person can memorize previously learned information, indicating the savings effect and strength of memory retention over time.
Step-by-step explanation:
A relearning measure of retention requires a participant to memorize information a second time to determine how much time or how many practice trials are saved by having learned it before. Relearning is a method of memory retrieval that involves learning information that was previously learned, as evidenced by the speed of reacquisition.
This approach demonstrates the savings effect, where individuals show faster learning during relearning compared to initial learning, illustrating the memory strength that has been retained over time. An example of relearning would be when someone has taken a language course after a long period of not using the language and discovers that they can relearn it quicker than the first time.