“…/e-ɛ/ and /o-ɔ/ (Regueira, 1996), while Spanish only distinguishes a single mid front and mid back vowel. Previous work from Galician and other Romance languages, has shown that these contrasts are particularly difficult to acquire and maintain (Amengual, 2016;Amengual & Chamorro, 2015;Mora, Keidel & Flege, 2015;Mora & Nadeu, 2012;Nadeu & Renwick, 2016;Pallier, Bosch & Sebastián-Gallés, 1997;Renwick & Ladd, 2016;Renwick & Nadeu, 2018;Tomé Lourido & Evans, 2015Simonet, 2011). This instability has not only been documented in bilingual settings where acquisition and maintenance may be adversely affected by interaction with a language that lacks mid vowel contrasts, as in the case of Galician and Catalan, but also in monolingual settings.…”