Retain information

You have to remember here that the speed of learning will greatly depend on the way you represent knowledge, i.e. how you formulate the material used in repetition. Optimization of repetitions is a separate problem and the statement "SuperMemo will let you learn at the highest possible speed", you should understand as "SuperMemo will let you learn at the highest speed for the given material, your mental characteristics and your general conditions for learning". Knowledge representation is so crucial that the difference in timeload may easily reach 1:100 ratio!!! The simplest rules for knowledge representation: keep it simple, interesting and use mnemonic techniques (i.e. use pictorial representation, use vivid examples, metaphors, comparisons, etc.).


Optimal interval

One of the earliest approaches to determining the optimal intervals has been described in: Wozniak, P.A., Gorzelańczyk, E.J., 1994, Optimization of repetition spacing in the practice of learning. Acta Neurobiologiae Experimentalis, Vol. 54, p. 59-62


Spacing effect

For pioneering insights into spacing effect see: Hintzman D.L. (1974) Theoretical implications of the spacing effect. In: Theories in cognitive psychology: The Loyola Symposium (Ed.R.L. Solso), p. 77-99