What difference does spaced or massed practice have on working memory?
Working memory capacity can be variable depending not just on previous information stored, but due to resource depletion due to cognitive effort (Chen et al., 2018)
This research below is conducted in actual classrooms with primary pupils! From the range of publications I am reading, this is rare in my experience ...
In a paper, extending cognitive load theory to incorporate working memory resource depletion: evidence from the spacing effect, Chen et al., (2018) including John Sweller - the author of cognitive load