Interleaving skills significantly improves learning efficiency
Interleaving skills generally enhances long-term retention and learning efficiency across various domains, though initial acquisition may appear more difficult.
The vast majority of the provided literature—including meta-analyses, experimental studies on motor and inductive learning, and computational models—consistently supports the finding that interleaved practice improves long-term retention and generalizability compared to blocked practice, despite occasional immediate performance disadvantages during acquisition.
Lauren R. Scheiner, Neeraja Sadagopan, David E. Sherwood. Effects of Blocked Versus Random Practice on Speech Motor Skill Acquisition and Retention. 2014. https://doi.org/10.1123/jmld.2013-0028
Blocked practice showed higher acquisition performance, but random (interleaved) practice yielded significantly better accuracy during retention.
Healy AF, Schneider VI, Kole JA. Exploring Whether Making Second-Language Vocabulary Learning Difficult Enhances Retention and Transfer.. 2025. https://doi.org/10.3390/bs15050692
Results suggest that making initial learning more difficult, such as mixing semantic categories, does not always translate to superior retention.
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Czyż SH, Wójcik AM, Solarská P, Kiper P. High contextual interference improves retention in motor learning: systematic review and meta-analysis.. 2024. https://doi.org/10.1038/s41598-024-65753-3
A systematic review and meta-analysis confirmed that high contextual interference via random practice significantly improves motor skills retention.
Norehan Zulkiply, Jennifer S. Burt. Inductive Learning: Does Interleaving Exemplars Affect Long-Term Retention?. 2013. https://doi.org/10.32890/mjli.10.2013.7655
The study demonstrated that interleaving exemplars improves long-term retention in inductive learning.
Ying Zhang. The effects of interleaved and blocked corpus-based practice on L2 pragmatic development. 2023. https://doi.org/10.1017/s0272263123000062
Interleaved practice showed facilitative and long-term effects on L2 pragmatic accuracy compared to blocked practice.
Little JL, Nepangue JA. Whether Interleaving or Blocking Is More Effective for Long-Term Learning Depends on One's Learning Strategy.. 2025. https://doi.org/10.3390/bs15050662
Interleaving was found to be more effective than blocking for category learning when evaluating memory-based classification.
Song Y, Kim H, Kim T. A minimal recurrent neural network models the robustness of interleaved practice on motor sequence learning.. 2026. https://doi.org/10.1038/s41598-026-40162-w
Computational modeling of motor sequence learning showed that interleaved practice yields superior long-term retention and generalization.
Hartwig MK, Rohrer D. Students' Perceptions of Effective Math Learning Strategies.. 2025. https://doi.org/10.3390/bs15081047
Interleaved practice is recognized as an effective math learning strategy supported by empirical data.
Feng DW, Reinkensmeyer DJ, Perez-Ibarra JC. Signal-Dependent Planning Noise Reduces Task Interference by Assisting in the Formation of Stable Motor Primitives in a Neural Network Model of Muscle Coordination Learning.. 2026. https://doi.org/10.1162/neco.a.1512
Computational modeling demonstrated that interleaved training facilitates the formation of stable motor primitives and reduces task interference.
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