“…For instance, students often choose to space their practice rather than mass it (e.g., Pyc & Dunlosky, 2010;Son, 2004;Toppino & Cohen, 2010). Unfortunately, when given a choice to use a long versus short lag for spacing, they choose the short lag (Cohen, Yan, Halamish, & Bjork, 2013;Wissman, Rawson, & Pyc, 2012), which is less optimal for learning than the long lag. This and other evidence suggests that students often do not regulate their learning effectively, which may also be the case with testing (for a review, see Bjork, Dunlosky, & Kornell, 2013).…”