I haven't seen any studies examining a broader transfer effect from spaced repetition. It seems unlikely - spaced repetition is just a hack of a normal memory m

I haven't seen any studies examining a broader transfer effect from spaced repetition. It seems unlikely - spaced repetition is just a hack of a normal memory mechanism for prioritizing factual knowledge, so why would explicit use of it have any generalized benefits? You are always being exposed to and remembering things, after all.