Final answer:
The measure of retention that requires participants to reproduce information without cues is referred to as 'recall'. It differs from recognition, which relies on cues, and from relearning, which involves learning previously encountered material again.
Step-by-step explanation:
A recall measure of retention requires participants to reproduce information on their own without any cues. Recall is a way of retrieving information where no external clues are provided and the individual must access the information from their memory storage. In contrast, recognition involves correctly identifying previously learned information when encountered again, often relying on cues or choices provided, as in a multiple-choice test. Relearning implies going through the learning process again and is usually faster the second time as the information has been previously encoded into memory, even if it is not readily accessible.