Ali Taghinezhad - Noncommunicable Diseases Research Center, Fasa University of Medical Sciences, Fasa, Iran
Mohammad Ali Ayatollahi - English Department, Sepidan branch, Islamic Azad University, Sepidan, Iran
Mahboobeh Azadikhah - Shahid Beheshti University of Medical Sciences, Tehran, Iran

This study investigated the effects of Interactive and Collaborative Instructional pedagogies on Iranian EFL learners' writing. It adopted pre-test and post-test control group quasi-experimental design with two experimental and one control groups. The participants were ۹۰ college students in two branches of Islamic Azad University. The main data collection tool was an essay writing task. Data were analyzed using ANCOVA. Pre-test post-test comparisons revealed that students who received interactive pedagogy gained the most from the instruction t= -۱۸.۳۰۲; p = ۰.۰۰۰; p< ۰.۵, followed by students who received collaborative pedagogy with a significance level of t= -۱۶.۲۵۳; p = ۰.۰۰۰; p < ۰.۵. The control group recorded no significant gain in their post-test performance t= ۰.۳۳۹; p = ۰.۷۳۶; p> ۰.۵. The total variance accounted for by all the independent variables taken together was ۵۱% (i.e. W۲ = ۰.۵۱%). Findings indicated that interactive pedagogies befitted students more than collaborative ones.

Interactive writing, collaborative writing, instructional pedagogy