This study examined the multiple relationship between Iranian EFL learners’ informal digital learning of English (IDLE) and their intercultural competence (ICC), specifically focusing on the mediating roles of grit and boredom. The sample consisted of 219 learners (aged 15–20) from language institutes in Urmia, selected based on PLS-SEM sampling requirements. Data were collected through four adapted instruments. Exploratory Factor Analysis (EFA) supported a six-factor model explaining 62.35% of the total variance, and Cronbach’s alpha indices confirmed high internal reliability. Results indicated that both receptive and productive IDLE positively predicted ICC. Furthermore, grit and boredom significantly mediated the relationship between IDLE and intercultural outcomes. These findings suggest that digital platforms provide authentic environments for learners to practice and improve their communication skills, though this process is influenced by their persistence and emotional engagement. The study highlights the need to account for psychological factors in informal learning and suggests that future research should explore further emotional variables through multifaceted designs.
فاطمه میرزا پور (Mon,) studied this question.