There's a book called "Make it Stick: The Science of Successful Learning" that is an excellent read on the science behind learning for lay-people (like myself) who want practical tips based in actual science.
It also argues that easier/faster learning is often worse. Harder learning lasts longer, and a big part of it is what they refer to as finding ways to "interrupt the natural process of forgetting". With this in mind, interleaved/ varied practice, spaced repetition, reflection, are all techniques that both lead to deeper understanding and better retention.
It also argues that easier/faster learning is often worse. Harder learning lasts longer, and a big part of it is what they refer to as finding ways to "interrupt the natural process of forgetting". With this in mind, interleaved/ varied practice, spaced repetition, reflection, are all techniques that both lead to deeper understanding and better retention.