Nargess Nourizadeh - Department of English language and literature, Faculty of humanities, Lorestan university
Amir Valadi - Ministry of Education

According to option-based conceptualizations of Focus on Form instruction (FonF), put forward by Ellis (۲۰۱۲), in EFL contexts employing mother tongue can be a viable option to be embedded in FonF instruction.  This study investigated the use of the mother tongue in FonF instruction and its possible effect on language learners’ written performance. To this end, ۱۰۰ language learners at elementary and intermediate levels of proficiency, in four groups of ۲۵, participated in this study. Two experimental groups received four FonF instructive sessions mediated by their mother tongue, and for the other groups, no L۱ use was allowed. After the instruction, the participants were required to take tests in which the intended grammatical structures were supposed to be produced in a written format. The results showed that the learners receiving the L۱-mediated instruction outperformed their counterparts. The findings were discussed psycho-linguistic factors involved in language data processing, and they can be useful to language teachers in  the EFL contexts regarding making decisions about using L۱ in L۲ language teaching contexts.

FonF instruction, mother tongue, Mother tongue-mediated FonF instruction