On the Effectiveness of Flipped Instruction on Iranian EFL Learners’ Appropriate Use of Request and Refusal

This study aimed at investigating the effectiveness of flipped instruction on the Iranian upper-intermediate English as a Foreign Language (EFL) learners’ appropriate use of request and refusal. The participants of the study included 60 upper-intermediate EFL learners from a language institute in Tehran, Iran, who were selected through the Quick Placement Test (QPT) from a total of 80 learners who were originally picked up based on convenience sampling in the form of two intact classes. Then, the two classes were randomly assigned to two groups namely, flipping group and control group. The two groups were subjected to 12 treatment sessions wherein instruction on the appropriate use of request and refusal was offered to the flipping group through explicit flipped instruction and to the control group through non-flipped instruction. The instruments used to collect the data included the Quick Placement Test (QPT) and Written Discourse Completion Test (WDCT). The results showed that flipped instruction significantly affected the EFL learners’ appropriate use of request and refusal. According to the findings, EFL teachers are recommended to use flipping methods in an attempt to enhance EFL learners’ appropriate use of request and refusal.