While a robust body of literature supports the benefits of spaced repetition and active recall for long-term retention, some recent studies report mixed findings where immediate repetition outperformed spacing or where spacing intervals failed to produce significant effects.
The evidence we hold leans leans supported
official record 3x · fact-check 2x · hedged 1x · crowd & reference 1x
The claim addresses two separate cognitive strategies: spaced repetition and active recall (retrieval practice). Multiple papers in the provided set support retrieval practice (e.g., papers 3, 7, 8, 11) and spaced repetition/distributed practice (papers 0, 1). However, paper 4 found that immediate repetitions were superior to spaced repetitions for vocabulary learning, and paper 11 explicitly found that manipulating the spacing interval did not yield a significant effect on student performance. Because the retrieved literature contains direct counter-evidence regarding the efficacy or superiority of spacing under certain conditions, the verdict is CONTESTED.