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Glossary

Spaced repetition (SRS) — the NoaLingua glossary

Spaced repetition is reviewing material at expanding intervals, with harder or forgotten items returning sooner than items recalled successfully.

The effect it exploits is the spacing effect: information reviewed at widening intervals is retained far longer than the same total study time spent in one block. A card you get right moves further away; one you get wrong comes back sooner.

Schedulers estimate a useful next interval; they do not know the exact moment you will forget. Adaptive systems use your review history and recall grades to change future intervals. Fixed-ladder systems only need to know whether you were right and move up or down a predetermined sequence.

In NoaLingua Both, depending on how you answered. Manual review uses SM-2 with four grading buttons. Practice games use a fixed ladder — 1, 3, 7, 14, 30, 90, 180 days — because a game cannot ask how hard something felt. A wrong answer drops two rungs rather than resetting to zero.

Sources

Research and official documentation used for this definition.

  1. Research Distributed practice in verbal recall tasks: a review and quantitative synthesis Nicholas Cepeda et al., Psychological Bulletin, 2006

    The spacing effect and the relationship between study interval and the time knowledge needs to be retained.

  2. Research Test-enhanced learning: taking memory tests improves long-term retention Henry Roediger & Jeffrey Karpicke, Psychological Science, 2006

    The distinction between rereading and effortful retrieval, and the long-term retention benefit of retrieval practice.

  3. First-hand product evidence Vocabulary review: product evidence and scheduling limits NoaLingua feature documentation

    A plain capture of saved contextual material and the documented local review workflow.