“…Retrieval practice and spacing effects in SLA Effects of spaced practice have received some attention in the field of SLA (Bird, 2010;Bloom & Shuell, 1981;Kasprowicz, Marsden, & Sephton, 2019;Lee, Maechtle, & Hu, 2021;Miles, 2014;Miles & Kwon, 2008;Nakata, 2015;Nakata & Webb, 2016;Rogers, 2015;Rogers & Cheung, 2020a, 2020bSchuetze, 2015;Serrano & Huang, 2018Suzuki, 2017;Suzuki & DeKeyser, 2017;Suzuki & Sunada, 2020). While many of these studies have found benefits of spacing L2 study, others have found no effect or even a detrimental effect of spacing repetitions more widely (Collins et al, 1999;Elgort & Warren, 2014;Nakata, 2015;Rogers & Cheung, 2020a, 2020bSerrano, 2011;Serrano & Huang, 2021;Serrano & Muñoz, 2007;Suzuki & DeKeyser, 2017;White & Turner, 2005) or that the finding of such an effect may depend on the learning outcome measure used (Nakata & Elgort, 2021).…”