Effects of Different Modes of Spacing on Iranian EFL Learners' Lexical Knowledge Development: Proficiency Levels in Focus
- PhD Candidate, Najafabad Branch, Islamic Azad University, Najafabad, Iran
- Associate Professor, Najafabad Branch, Islamic Azad University, Najafabad, Iran
- Assistant Professor of Teaching, Najafabad Branch, Islamic Azad University, Najafabad, Iran
- Faculty of Education, UKM, Malaysia
Revised: 2022-11-22
Accepted: 2023-04-23
Published in Issue 2023-01-01
Copyright (c) 2024 Journal of New Trends in English Language Learning (JNTELL)

This work is licensed under a Creative Commons Attribution 4.0 International License.
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Abstract
This study examined the effect of spacing on lexical development focusing on the Iranian EFL learners’ proficiency levels.
Participants were 120 EFL learners from 22 to 26 of age who were studying at several English institutes in Isfahan. Three tests
were used to collect the required data. First, OQPT was employed to place the learners with similar language abilities in an
experimental group and a control group. Based on the OQPT results, each group was divided into two sub-groups including 30
high and 30 low proficiency learners. Then a pretest was conducted to evaluate the EFLlearners’ vocabulary knowledge. Learners
in both control and experimental groups received the same lexicon but in different ways. Experimental groups were taught new
words through spaced instruction, while control groups received through massed instruction. The spacing classes were held once
a week in seven weeks while massed classes were held in one session in the eights week. During the posttest, the researcher
devised an achievement test, administered it after the treatment; the results were compared and analyzed in order to determine
the extent of the participants' vocabulary improvement. Findings of this research showed that using spaced instruction caused
high proficiency learners to significantly outweigh the low proficiency ones. Since spacing has been widely known to have a
positive effect on learning and long-term memory (Cepeda et al., 2006), therefore it can be found useful for curriculum developers
and syllabus designers in deciding where to put the new vocabulary in a course or a book.
Keywords
- Spacing Instruction,
- Massed Instruction,
- EFL Proficiency Level,
- , Lexical Development
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