Age-related differences in absolute but not relative metamemory accuracy

In 3 experiments, the effects of age on different kinds of metacognitive prediction accuracy were assessed. Participants made global memory predictions and item-by-item memory predictions in a single experimental task. Metacognitive accuracy was evaluated with correlational and more traditional difference-score measures. Difference-score measures were found, in some cases, to be sensitive to level of recall performance. Correlational techniques revealed that older adults monitored learning effectively. Relative to younger adults, they showed equally accurate immediate judgments of learning (JOLs), produced an equivalent delayed-JOL effect, and showed equivalent upgrading in the accuracy of their global prediction from before to after study of test materials.