Self-efficacy, or a person's perception of his/her own mastery of a skill, affects subsequent task performance and predictions of future performance. To examine older adults' metamemorial knowledge with respect to predicting their performance on everyday and laboratory memory tasks, 28 adults (22 females, 6 males), aged 58 to 80 years, completed a memory self-efficacy questionnaire. Subjects then performed four everyday memory tasks from the questionnaire and four laboratory tasks. They completed a second questionnaire assessing depression and overall mood. An analysis of the results showed that self-efficacy level was higher for everyday tasks than for laboratory tasks, as was self-efficacy strength. Predictions and scores were not highly correlated. However, affective mood affected prediction and performance of laboratory tasks more than everyday tasks. Accuracy and performance were significantly correlated on everyday tasks. Individuals high in self-efficacy had low depression scores. Individuals high in self-confidence were more accurate in their predictions than low self-confidence individuals. These findings suggest that older adults will be accurate or will underestimate their performance when they are given the opportunity to reflect at some length about the nature of the memory tasks they will be asked to perform, and when they are fairly confident of their performance predictions. (BL)