Both multiple-choice and short-answer quizzes enhance later exam performance in middle and high school classes
Journal of Experimental Psychology Applied (2014) - Comment
pubmed: 24274234  doi: 10.1037/xap0000004  issn: 1939-2192  issn: 1076-898x 

Kathleen B. McDermott, Pooja K. Agarwal, Laura D'Antonio, Henry L. Roediger, Mark A. McDaniel