Hm. We are principally interested here, practicality-wise, in akrasia and productivity. I don't know of any particular area of the akrasia literature that hasn't been discussed thoroughly here. Productivity-wise, software tools outside psychological training like dual n-back and spaced repetition tools like Mnemosyne/Anki already have their coverage. Nootropics are a common interest, but the major ones seem covered either by Wikipedia or my own stuff.
Maybe there's an area of psychology missing? For example, I've wondered how well-researched the Big Five personality factors are, and in particular, what the research on Conscientiousness says. I've collected a number of citations on it, but this has always been half-hearted. Which is too bad, because Conscientiousness seems like a major factor that LWers lack, and is pretty closely related to akrasia. Lukeprog claimed there was research into how to improve it in one of the reviews he cited, but I couldn't refind it.
As a principle, things you can change are much more interesting for a literature review. For nootropics the change in IQ or other measure of even task-specific ability would be interesting to quantify. Similarily, personality traits and their payoffs are only interesting if is possible to change ones own personality.
The last prize, for the best literature review of spaced repetition, was moderately successful, inspiring a pretty good review of the academic literature on spaced repetition. I am interested in experimenting more with prizes, but I would like to get input other people's input: what are other good topics for future prizes?
The topic should be: