“…Although meta-analytic syntheses of research have shown consistent benefits for recasts and negotiated interaction (Li, 2010;Mackey & Goo, 2007;Russell-Valezy & Spada, 2006), such broad generalizations may have little to say about implementation in specific contexts, given the variation in individual results. Furthermore, the claim that attention to L2 form would be best achieved through ad hoc reactive feedback has been undercut by evidence that (a) learners often fail to correct their peers on grammatical accuracy, particularly when their errors do not affect comprehensibility (Adams, Nuevo, & Egi, 2011;Bowles, Adams, & Toth, 2014;Buckwalter, 2001), and (b) tasks requiring learners to develop or apply elaborate explicit understandings of L2 structural patterns have positive outcomes on subsequent language use (Moranski & Toth, 2016;Negueruela & Lantolf, 2006;Swain et al, 2009). As social approaches to L2 development have gained interest since the turn of the millennium, proponents of the interaction hypothesis have begun to acknowledge the importance of social and pragmatic, contextual factors in explaining variability in learning outcomes (Ellis & Sheen, 2006;Mackey, 2012;Philp & Mackey, 2010) Currently, most cognitive theorists recognize that it is impossible to completely isolate implicit, procedural knowledge from explicit, declarative knowledge during language use, as both systems influence any behaviors we enact simultaneously to some degree (DeKeyser, 2003(DeKeyser, , 2009Ullman, 2015).…”