“…Some scholars explored the evidence of attrition phenomenon in different parts of language knowledge (Berman & Olshtain, 2015;Tomiyama, 2000). On the other hand, others focused on factors and techniques that contribute to language proficiency development (Arevalo, 2010;Bahrick, 1984;Garza, 1991;Huang & Eskey, 2000;Markham, 1999;Rott, 1999;Schneider, Healy, & Bourne, 2002;Snow, Padilia, & Campbell, 1988;Valmori, 2014;Weltens, Van Els, & Schils, 1989;Yashiro, 1992). None of these studies, however, explored and theorized EFL learners' experience of proficiency maintenance.…”