Bjork, E. L., Little, J. L., & Storm, B. C. (2014). Multiple-choice testing as a desirable difficulty in the classroom. Journal of Applied Research in Memory and Cognition, 3(3), 165-170. doi:10.1016/j.jarmac.2014.03.002 https://doi.org/10.1016/j.jarmac.2014.03.002