Optimizing Distributed Practice
نویسندگان
چکیده
9 Abstract. More than a century of research shows that increasing the gap between study episodes using the same material can enhance retention, 10 yet little is known about how this so-called distributed practice effect unfolds over nontrivial periods. In two three-session laboratory studies, we 11 examined the effects of gap on retention of foreign vocabulary, facts, and names of visual objects, with test delays up to 6 months. An optimal 12 gap improved final recall by up to 150%. Both studies demonstrated nonmonotonic gap effects: Increases in gap caused test accuracy to initially 13 sharply increase and then gradually decline. These results provide new constraints on theories of spacing and confirm the importance of
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