The Effect of Mobile-mediated Dynamic Assessment on EFL Learners’ L2 Vocabulary Knowledge

This study examined the effect of mobile-mediated dynamic assessment (DA) to enhance English as a foreign language (EFL) learners’ vocabulary learning. To this end, 78 pre-intermediate level EFL learners learning English at a language institute were selected based on their availability to the researcher. The participants were randomly assigned to three equal groups (one control and two experimental). Next, the vocabulary pre-test was conducted for all participants to observe their development throughout the instruction. WhatsApp was used in one of the experimental groups (mobile-mediated DA), and 26 students entered a talk group where DA was applied. The second experimental group received DA in class (in-class DA). The control group assessed the participants’ zone of actual development (ZAD) at various points in the course. Concerning the experimental groups, a scale of prompts was used to mediate the learning process when students made an error, and the researcher acted as a mediator. The results showed that mobile-mediated DA was successful in enhancing EFL students’ vocabulary learning. Moreover, a reduction in the prompt s mean score at the end of the course suggested that fewer prompts were required to divert the participants’ attention to the error. The findings of this study can lead to a better understanding of the pedagogical importance of mobile-mediated DA.