“…• In the case of OIE aimed at developing linguistic and communicative competences, fostering LSP learning or increasing learner autonomy and motivation, the results seem to indicate that an L1 configuration might be more suitable, as significant differences were appreciated between the two groups of participants. (Ke & Cahyani, 2014;Sevilla-Pav on & Haba Osca, 2016) or between native speakers (NS) (Belz, 2003;Belz & Thorne, 2006;Dooly & Sadler, 2013;Sevilla-Pav on & Haba Osca, 2017), the differences between both kinds of configurations remain widely unexplored, with very rare exceptions. Among those, Ke's (2016) small-scale study aimed to determine how a multilingual OIE influenced participants' identities.…”