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Tests following learning serve several important functions, including enabling students to monitor their progress and identify knowledge gaps, but they are also learning events in their own right. Testing is a powerful strategy to consolidate retention of studied information, by comparison with restudying and other elaborative strategies, and facilitates subsequent learning of new information. Moreover, the testing effect generalizes to different test formats, study-test intervals, and material types, and has been robustly demonstrated not only in the laboratory but also in classroom settings. Pretesting can promote subsequent learning of tested information, but its effect on non-pre-questioned information remains unclear. Although the beneficial effects of testing on learning and memory are substantial, learners tend to underappreciate the merits of practice tests, leading to their underemployment. Lack of motivation or insufficient knowledge about how best to exploit testing may be factors that suppress its use. However, some promising interventions have been developed to promote learners’ employment of self-testing. Whether these interventions can be effective in high-stakes classroom or online learning is an important issue for future research. Importantly, research suggests that frequent low-stakes testing may be an effective method of reducing test anxiety. Although the testing effect is very general, testing can also have negative consequences, such as when choosing an incorrect answer in a multiple-choice test stamps that incorrect answer into memory and increases its likelihood of being recalled later. Understanding the conditions in which positive or negative consequences of testing are observed bears considerable importance regarding the theoretical understanding of test-enhanced learning. Characterizing, understanding, and exploiting the multifaceted effects of tests on long-term learning has provided a rich and deep challenge to researchers in psychology, education, cognitive science, neuroscience, and related fields. |