This study attempted to determine the viability of the pedagogic interventions in ESP writing courses that fall within the ambit of Written Corrective Feedback (WCF). Considering this objective, 93 intermediate-level ESP learners in 3 intact classrooms of a medical sciences university in Iran were assigned to three groups. They were provided with corrective feedback; using three feedback strategies comprising direct, indirect, and metalinguistic WCF over ten treatment sessions. The researchers endeavored to itemize the utility of the interventions mentioned above via analyzing the participants’ performance on an immediate and a delayed writing posttest. The results displayed the efficacy of WCF for the betterment of the ESP learners’ writing performance. Furthermore, they accentuated the short-term and long-term supremacy of explicit WCF strategies (i.e., metalinguistic & direct) over the implicit ones (i.e., indirect). The findings might enable syllabus designers and curriculum developers to redress the English courses for students of allied medical sciences.
