The Retention Toolkit is a series of posts describing research based tools which help improve long-term knowledge retention.
In my first post of this series, I presented research on test-enhanced learning: using testing not as an evaluation technique, but as a learning technique to improve retention. Testing is a far more efficient use of time than study techniques such as rereading, reviewing lecture notes, or making outlines.
But how is test-enhanced learning best implemented? Research in human memory shows that timing is everything. It’s called the spacing effect.
Information that is spaced over time is better remembered than the same amount of information massed together.(1)