“…Indeed, Bahrick, Hall, Goggin, Bahrick and Berger (1994), using different grammatical and vocabulary tests, found a change of dominance in favour of L2 for a stay in the L2 environment around 12 years. Attrition of L1, that is language loss, can be one of the consequences of longer stays in an L2 environment (Köpke, 2004, for a review;Schmid & Köpke, 2007).…”