“…Nonetheless, despite long held assumptions about the links between L2 teaching and L2 language development underpinning studies on the IRF, until recently there has been little empirical evidence linking the linguistic designs of teaching actions in the IRF and other instructional activities to L2 learners’ developing linguistic repertoires. This is changing, however, as research from fields such as child language development (e.g., Tomasello, 2003), psycholinguistics (e.g., MacWhinney, 2006, 2015), neurolinguistics (e.g., Lee, Mikesell, Joaquin, Mates, & Schumann, 2009) and different branches of functional and cognitive linguistics (e.g., Bybee, 2006; Goldberg, 2006; Larsen-Freeman & Cameron, 2008; Ellis, 2012) has provided robust findings on the usage-based foundations of language knowledge, and specifically on the consequential role of the input to which L2 learners are exposed to their language development.…”