~ continue to practice material even after a correct trial to boost long-term retention

— idea of overlearning

Once material has been learned to a criterion of one perfect trial, further study within the same session constitutes overlearning.

[...]

The overlearners recalled far more than the low learners at the 1-week test, but this difference decreased dramatically thereafter.

❐ The effect of overlearning on long-term retention

Jahnke and Nowaczyk (1998) advised, ‘Practise should proceed well beyond that minimally necessary for an immediate, correct first reproduction’ (p. 181)

❐ The effects of overlearning and distributed practise on the retention of mathematics knowledge (highlight mine)