“…In an effort to accelerate integration in practice, studies have appeared in recent years of real-world classroom demonstrations of the spacing effect in many contexts, such as vocabulary learning (Bird, 2010;Carpenter, Pashler, & Cepeda, 2009;Gallo & Odu, 2009;Kang, Lindsey, Mozer, & Pashler, 2014;Khajah, Lindsey, & Mozer, 2014;Lindsey, Shroyer, Pashler, & Mozer, 2014;Rohrer, 2009;Rohrer & Taylor, 2006;Sobel, Cepeda, & Kapler, 2011), fraction learning (Rau, Aleven, Rummel, & Pardos, 2014), and skill acquisition (Moulton et al, 2006;Stafford & Dewar, 2014). Technology has enabled what is perhaps the most visible application of the spacing effect today: spaced repetition software (SPS).…”