Not sure if this is even a study, but another vote for Spaced Learning in education: https://www.diva-portal.org/smash/get/diva2:854586/FULLTEXT01.pdf
Not sure if this is even a study, but another vote for Spaced Learning in education: https://www.diva-portal.org/smash/get/diva2:854586/FULLTEXT01.pdf