This will be no surprise to anyone in ASP, but hopefully this sort of study will filter out to a broader law school audience.
Frequent Tests Can Enhance College Learning, Study Finds
Short quizzes at the start of each class increased attendance and performance, an experiment showed.
http://www.nytimes.com/2013/11/21/education/frequent-tests-can-enhance-college-learning-study-finds.html?smid=pl-share
(RCF)