english: This one that appeared in Science last year, for example, demonstrates that even simple retrieval practice, where students are just supposed to repeat what they already learned gives considerably improved results on various achievement tests down the line than many other educational interventions.
non_english: Deze bijvoorbeeld,  vorig jaar in Science, toont dat zelfs gewoon kennis herhalen, waarbij studenten moeten herhalen wat ze al kennen, veel betere resultaten geeft op toetsen achteraf dan andere educatieve interventies.