The Combined Effect of Task Complexity and Task Condition through Collaborative Activities on EFL Learners’ Vocabulary Learning: A Focus on L2 Proficiency
- English Department, Qaemshahr Branch, Islamic Azad University, Iran
Published in Issue 2024-12-31

This work is licensed under a Creative Commons Attribution 4.0 International License.
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Abstract
The present study probed into the combined effect of task complexity and task condition
through collaborative activities on EFL learners’ vocabulary learning with a focus on the role
of L2 proficiency. To this end, 121 female Iranian EFL learners from Safir Institute in Babol
were initially given Oxford Placement Tests (OPTs) to select homogeneous participants in
terms of language proficiency. Then, 80 female pre-intermediate and intermediate Iranian EFL
learners were selected and randomly divided into four groups: two experimental groups and
two control groups. Each group consisted of 20 learners. There were a vocabulary pretest and
a posttest. The experimental groups benefited from two complexity tasks, namely a ''fill-in
task'' and a ''sentence writing'' task with different derivatives of the words. The two
experimental groups were required to perform the tasks collaboratively. However, the control
groups were not exposed to any complexity tasks and followed their conventional vocabulary
learning individually. Results revealed that task complexity and task condition had a
statistically significant impact on the learners’ vocabulary learning in both experimental
groups (i.e., pre-intermediate and intermediate) compared with their control group
counterparts. Practical implications and directions for future research are also discussed.
Keywords
- L2 Proficiency,
- Task complexity,
- Task condition,
- Vocabulary learning
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