Glossary:Post-lapse stability

post-lapse stability (also: PLS) - the stability of an item after a repetition that scored a failing grade. Post-lapse stability can be interpreted as optimum interval after forgetting and rarely goes beyond mere days. On occasion, an item might be forgotten by "accident" and still remembered years after the lapse, however, statistically this is an insignificant phenomenon as visualized by Analysis : Graphs : First interval and Memory : 4D Graphs : First interval. See more: SuperMemo Algorithm