Published online by Cambridge University Press: 15 May 2020
With much empirical evidence of a beneficial role of interaction in second language (L2) development, researchers have become interested in investigating specific aspects of interaction (e.g., negotiation for meaning, corrective feedback (CF), modified output, noticing, etc.) that likely influence the extent to which interaction benefits L2 learning (Mackey, 2012; Mackey, Abbuhl, & Gass, 2012; Mackey & Goo, 2013; Gass & Mackey, 2015; Loewen & Sato, 2018). Among varied features of interaction, CF has been found to be quite effective at drawing learners' attention to L2 linguistic features during interaction, and has engendered much scholarly discussion of pivotal importance and numerous empirical studies on its potential for L2 development (see Russell & Spada, 2006; Mackey & Goo, 2007; S. Li, 2010*; Lyster & Saito, 2010*; Lyster, Saito, & Sato, 2013*; Brown, 2016*; Nassaji, 2016* for reviews and meta-analyses). Recasts, inter alia, have been at the center of most CF research and greatly explored with a view to understanding the nature of recasts, their characteristics (in various L2 learning contexts), their relative efficacy over other CF moves, and moderator variables that may mediate the effectiveness of recasts.