Effects of Lexical Simplification and Elaboration on Iranian Intermediate EFL Learners’ Learning and Retention of Phrasal Verbs

Abstract

This study aimed at investigating the effect of lexical simplification and elaboration on Iranian intermediate EFL learners’ learning and retention of phrasal verbs. In order to achieve this goal, a PET test was run into 130 learners. When target participants were chosen, they were assigned into three groups including two treatment groups and one control group. Through a multiple choice test, 40 out of 60 phrasal verbs were selected as target phrasal verbs. Through 8 sessions of treatment, each group received a reading comprehension text that contained 5 phrasal verbs. But the way the phrasal verbs in two experimental groups were modified was different. One of them received elaborated input and the other group received simplified input; meanwhile, the control group received unmodified input. After eight sessions of treatment, an immediate multiple choice test was administered to find out which techniques had stronger effect on participant’s learning and retention of phrasal verbs. After one month, the same test, with a different order of items, was administered as delayed posttest to check the participants’ level of retention. According to the results of the study simplified input group significantly outperformed the control and elaborated group on both learning and retention of phrasal verbs.