I actually hadn't noticed that Spaced Repetition is testing till this research. I didn't know about the testing effect. I think knowing about the testing effect will make me more effective learning things more generally. I'd actually like to see an stand alone article on the testing effect.
The Spaced Repetition literature review prize for the best new review of the evidence on Spaced Repetition has ended and the judging panel has made its decision. The prize attracted entries from Duke (entry) and Gwern (entry). After reviewing the submissions separately and then discussing them together, the judging panel unanimously judged Gwern's entry to be the best.
With great pleasure, we now award Gwern the prize of $385.
Anki cards for Gwern's review are available as the shared deck "Gwern Spaced Repetition Lit Review". If you have improvements or alternate decks, post them in the comments.
The three judges, BenLowell, Guy Srinivasan and John Salvatier (me), are Seattle LessWrongers who volunteered to judge the contest.
We thank Duke and Gwern for their submissions, as well as users randomwalker, Antisuji, Dr_Manhattan, Benquo, Nick_Roy for contributing to the prize fund.