The Effects of Growth Mindset Intervention on Iranian EFL Learners’ Vocabulary Development

چکیده

As a possible and influential factor in academic success, student growth mindset has recently received attention. However, the number of the studies concerning the effects of growth mindset on language skills in the context of Iran is not considerable and no study has specifically examined the influence of growth mindset on Iranian EFL learners’ vocabulary development. To fill this gap, this study was conducted in order to investigate if the intervention has any significant effects on Iranian EFL learners’ vocabulary development compared to those who do not receive such intervention. A quasi-experimental design in the form of pre- and posttest was used in this study. To homogenize the participants in terms of their proficiency, OQPT was used. Subsequently, out of 78 learners, sixty Iranian intermediate language learners were randomly assigned into two groups of control group receiving conventional vocabulary training and experimental group receiving a growth mindset intervention besides the conventional method for vocabulary learning. Vocabulary knowledge of the students was tested with the help of a vocabulary knowledge test that was specifically prepared and developed by researchers. To investigate if using growth mindset intervention had positive effects on learning English vocabulary by the learners in each control and experimental groups, two sets of paired-samples t-test were conducted. Afterwards, to explore which method had been more effective, the mean scores of the posttests of the control and experimental groups were compared by executing an independent two-sample t-test. The results revealed that implementing growth mindset intervention had positive effects on vocabulary development of EFL learners. Accordingly, this study has pedagogical implications for EFL teachers and students, as well as material designers.