Based on a book chapter.
Reference: Ambrose, S., Bridges, Michael W, DiPietro, Michele, Lovett, Marsha C, Norman, Marie K, & Mayer, Richard E. (2010). How Do Students Develop Mastery? In 1st ed. Jossey-Bass higher and adult education series. How learning works: Seven research-based principles for smart teaching (pp. 91-120). San Francisco, Calif.: Jossey-Bass.