
Spaced repetition works best when you forget a word between reviews, maximizing long-term retention per study minute.
Teaching a new word to someone else strengthens your memory more than additional solitary practice.
Active use beats passive exposure: swapping a word into real sentences triples retention compared to rereading definitions.
Sleep immediately after learning a vocabulary item doubles recall probability compared to staying awake.

Spaced repetition works best when you forget a word between reviews, maximizing long-term retention per study minute.
Teaching a new word to someone else strengthens your memory more than additional solitary practice.
Active use beats passive exposure: swapping a word into real sentences triples retention compared to rereading definitions.
Sleep immediately after learning a vocabulary item doubles recall probability compared to staying awake.