“…Several studies have shown that language components of L1, such as phonological and spelling knowledge contribute to the acquisition of L2 (Abu-Rabia & Bluestein-Danon, 2012;Abu-Rabia & Shakkour, 2014;Abu-Rabia et al, 2013;Durgunoglu, 2002;Kahn-Horwitz et al, 2005;Kieffer & Lesaux, 2008;Zhang & Koda, 2008;Talebi, 2014 (Sparks & Ganschow, 1995), the existence of difficulties in L1 is a predictor for difficulties in the L2. As Sparks, Patton, Ganschow, & Humbach (2009) report, when students fail to reach a high level of competency in L2, limited skills in L1 are also entailed.…”