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Research papers on Spaced repetition and memory

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  1. Optimizing Distributed Practice

    Nicholas J. Cepeda, Noriko Coburn, Doug Rohrer, et al. · 2009 · Experimental Psychology (formerly Zeitschrift für Experimentelle Psychologie) · 294 citations

    More than a century of research shows that increasing the gap between study episodes using the same material can enhance retention, yet little is known about how this so-called distributed practice effect unfolds over nontrivial periods. In two three-session laboratory studies, we 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 gap improved final recall by up to 150%. Both studies demonstrated nonmonotonic gap effects: Increases in gap caused test accuracy to initially sharply increase and then gradually decline. These results provide new constraints on theories of spacing and confirm the importan

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  2. A Trainable Spaced Repetition Model for Language Learning

    Burr Settles, Brendan Meeder · 2016 · Annual Meeting of the Association for Computational Linguistics (ACL) · 217 citations

    We present half-life regression (HLR), a novel model for spaced repetition practice with applications to second language acquisition.HLR combines psycholinguistic theory with modern machine learning techniques, indirectly estimating the "halflife" of a word or concept in a student's long-term memory.We use data from Duolingo -a popular online language learning application -to fit HLR models, reducing error by 45%+ compared to several baselines at predicting student recall rates.HLR model weights also shed light on which linguistic concepts are systematically challenging for second language learners.Finally, HLR was able to improve Duolingo daily student engagement by 12% in an operational us

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  4. The effect of overlearning on long‐term retention

    Doug Rohrer, Kelli Taylor, Harold Pashler, et al. · 2004 · Applied Cognitive Psychology · 99 citations

    Abstract Once material has been learned to a criterion of one perfect trial, further study within the same session constitutes overlearning. Although overlearning is a popular learning strategy, its effect on long‐term retention is unclear. In two experiments presented here, 218 college students learned geography facts (Experiment 1) or word definitions (Experiment 2). The degree of learning was manipulated and measured via multiple test‐with‐feedback trials, and participants returned for a final cued recall test between 1 and 9 weeks later. The overlearners recalled far more than the low learners at the 1‐week test, but this difference decreased dramatically thereafter. These data suggest t

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  7. Planning Education for Long-Term Retention: The Cognitive Science and Implementation of Retrieval Practice

    Douglas P. Larsen · 2018 · Seminars in Neurology · 52 citations

    Educational systems are rarely designed for long-term retention of information. Strong evidence has emerged from cognitive psychology and applied education studies that repeated retrieval of information significantly improves retention compared to repeated studying. This effect likely emerges from the processes of memory consolidation and reconsolidation. Consolidation and reconsolidation are the means by which memories are organized into associational networks or schemas that are created and recreated as memories are formed and recalled. As educators implement retrieval practice, they should consider how various test formats lead to different degrees of schema activation. Repeated acts of r

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  8. No Robust Effect of Distributed Practice on the Short- and Long-Term Retention of Mathematical Procedures

    Mirjam Ebersbach, Katharina Barzagar Nazari · 2020 · Frontiers in Psychology · 22 citations

    We investigated the effect of distributed practice and more specifically the “lag effect” concerning the retention of mathematical procedures. The lag effect implies that longer retention intervals benefit from longer inter-study intervals. University students (N = 235) first learned how to solve permutation tasks and then practiced this procedure with an inter-study interval of zero (i.e., massed), one, or eleven days. The final test took place after one or five weeks. All conditions were manipulated between-subjects. Contrary to our expectations, the analyses revealed no effect of distributed practice and therewith also no lag effect, even though the sample size was sufficiently large. The

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  10. Short- and Long-term Effects of Repetition Strategies on Vocabulary Retention

    Sultan Altalhab · 2018 · Advances in Language and Literary Studies · 10 citations

    This experimental study examines the role of oral and written repetition strategies in consolidating new vocabulary in the classroom context. The participants in this study were divided into three treatment groups: oral, written and oral+written. A pretest and three delayed post-tests given at one day, one week and six weeks intervals were utilised in the study. The short and long-term retention of 12 unknown words was investigated over one semester. The results revealed that all three types of repetition strategies were effective in retaining new vocabulary in the short-term. However, in the long-term, the oral+written group achieved superior results while the oral group was the least effec

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  12. Unveiling the Art of Effective Learning through Spaced Repetition and Evidence-Based Techniques

    Kshitij Narkhede, Ratnakar Patil, Aman Kasat, et al. · 2024 · IEEE International Conference on Contemporary Computing and Communications (InC4) · 6 citations

    This study critically examines the limitations of traditional learning methods, such as cramming, re-reading, and massed practice, which often result in suboptimal long-term retention and understanding. The paper proposes an integrated approach, emphasizing the pivotal role of Spaced Repetition alongside other evidence-based techniques. By exploring Active Recall, Desirable Difficulties, Elaboration, Interleaving, Concrete Examples, Dual Coding, and Distributed Practice, this research harmonizes cognitive psychology and neuroscience principles. The integrated approach outlined in the paper aims to enhance memory, comprehension, and problem-solving, catering to learners of diverse paces and a

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  14. THE ROLE OF SPACED REPETITION AND RETRIEVAL PRACTICE IN SUPPORTING LONG-TERM L2 VOCABULARY DEVELOPMENT

    Tuychiev Abror Khabibulla ugli · 2026 · SCIENCE TIME

    This article explores how spaced repetition and retrieval practice contribute to long-term vocabulary growth in second language (L2) learning. Drawing on recent experimental studies and meta-analytic findings, the paper compares distributed learning strategies with traditional massed learning methods. The findings demonstrate that learners retain vocabulary more effectively when they revisit and actively recall words over spaced intervals rather than studying them intensively in a single session. In addition to improving retention, spaced retrieval practice supports more sustainable lexical development over time. The article also discusses how these strategies can be integrated into classroo

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  16. THE SCIENCE BEHIND SPACED REPETITION FOR MEMORY RETENTION

    Yokubjonova Dilnavozxon Serobjon Qizi · 2025 · Journal of Applied Science and Social Science

    A cognitive strategy called spaced repetition involves going over knowledge at progressively longer intervals in order to enhance long-term memory retention. This approach, which has its roots in cognitive psychology and neuroscience, uses the brain's innate memory consolidation mechanism to reverse the forgetting curve, a phenomena that Hermann Ebbinghaus initially noticed. Spaced repetition is more effective than conventional study techniques like cramming because it improves memory retention by strengthening brain pathways right before knowledge is likely to be forgotten. This method is based on the spacing effect, which states that material is better kept when reviewed across a number of

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  18. Optimizing Long-Term Retention of Abstract Learning

    Danielle Mazur · 2003 · Digital Commons - University of South Florida (University of South Florida)

    In a distributed learning strategy, study time is spread across multiple study sessions, without increasing total study time. The benefits of distributed practice, also known as spaced practice, on learning of rote-memory tasks (e.g., spelling, addition, and cued-recall of word pairs) are well known. However, few researchers have looked at the effects of distributed practice on the learning of abstract materials (e.g., physics problems, logical deductions, and algebra). We examined the effects of distributed practice on learning the abstract task of matrix multiplication. In Experiment 1, we taught participants matrix multiplication in either a massed (i.e., 0-day interstudy gap), or distrib

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  19. Improving long-term retention: promoting distributed practice in an introductory economics course

    Daniel Diaz Vidal · 2023 · Advances in Economics Education

    This paper reports on a classroom experiment that tested whether increased use of a pedagogical approach known as distributed practice can lead to enhanced long-term retention of material covered in an Introduction to Economics course. In a distributed practice approach, students are encouraged to learn course material over a longer period of time and to keep coming back to the same material more than once. This contrasts with more traditional pedagogical approaches that effectively encourage students to cram for exams in a short space of time. Students in a class that made more frequent use of comprehensive exams across a semester, and students in a class that employed a more traditional as

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  20. Implementation of Spaced Repetition Technique Using Flashcards to Improve Arabic Vocabulary Retention

    Laily Maghfiratun Nafi'ah, Mualim Wijaya · 2025 · Studi Arab

    This study aims to evaluate the effectiveness of the spaced repetition technique integrated with flashcard media in improving Arabic vocabulary retention in students. Quantitative methods with a pre-experimental design of the One Group Pretest-Posttest type were used in this study. The subjects of the study were 22 female students of Madrasah Tsanawiyah Nurul Jadid class VII, who were selected through total sampling techniques. Data were collected through pretest and posttest tests, then analyzed using normality tests and paired sample t-tests with the help of SPSS. The results showed an increase in the average value from 60.7 (pretest) to 87.2 (posttest) with a significance value of p = 0.0

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