shima azizbeigi

The instability and interdisciplinarity of applied linguistics have led to the divergence of themes explored in research articles, resulting in many studies on applied linguistics research themes. However, there are still gaps, including selecting unrepresentative corpora and analyzing research articles published years ago. This diachronic corpus-based study attempted to randomly select 3000 original research articles published from 2012 to 2022 in 20 top-tier journals and analyze them using Glaser and Strauss’ (1967) grounded theory to ensure trustworthiness and rigor. The findings demonstrated that well-established areas within the field, such as Second Language Acquisition (SLA), Language Testing, and sociolinguistics, were predominant, whereas critical- and technological-oriented areas received limited attention. Novel interdisciplinary themes, such as neurolinguistics, also emerged. It was also found that each main theme included various sub-themes; for example, SLA embodied sub-themes such as Learner Identity and Learner Motivation, and these sub-themes themselves included sub-categories. The findings illuminate the need for educational policymakers to widen the scope of applied linguistics research. Likewise, in order to cater for the students’ needs and foster a more inclusive educational environment, teachers and materials developers need to incorporate a wide variety of diverse, critical, and neglected themes in their instructional resources, materials, and lesson plans.