Najafi karimi, Shaban, Haghnia, Mokhtar, Marzban, Amir (2024). The Combined Effect of Task Complexity and Task Condition through Collaborative Activities on EFL Learners’ Vocabulary Learning: A Focus on L2 Proficiency. *Journal of New Trends in English Language Learning (JNTELL)*, 3(3), -. 10.71528/jntell.2024.1183683