Q: Is there an optimal amount of time to study or practice? A: More important than how long you study is how you distribute the study time you have. Breaking up study or practice time—dividing it into two or three sessions, instead of one—is far more effective than concentrating it. If you’ve allotted two hours to mastering a German lesson, for example, you’ll remember more if you do an hour today and an hour tomorrow, or—even better—an hour the next day. That split forces you to reengage the material, dig up what you already know, and re-store it—an active mental step that reliably improves
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