Self-assessment is important for effective learning. Students who are skilled at examining their own thought processes can use the resulting information to learn and perform well in testing situations. In addition, those who effectively use feedback from exams can raise their level of learning. I report on two activities from an introductory psychology class, one that measures the ability to predict exam performance and a second that gives students feedback on their test performance before taking a retest. The feedback was specifically designed to show students what concepts were not completely mastered.