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Native Language-Based DIF across the Subtests: A Study of the Iranian National University Entrance Exam | ||
Journal of English Language Teaching and Learning | ||
دوره 14، شماره 30، بهمن 2022، صفحه 39-56 اصل مقاله (1.07 M) | ||
نوع مقاله: Research Paper | ||
شناسه دیجیتال (DOI): 10.22034/elt.2022.51852.2491 | ||
نویسندگان | ||
Parviz Ajideh؛ Massoud Yaghoubi-Notash؛ Hamid Reza Babaee Bormanaki* | ||
English Language & Literature Department, University of Tabriz, Tabriz, Iran. | ||
چکیده | ||
This paper reports on an investigation of native language-based differential item functioning (DIF) across the subtests of Iranian Undergraduate University Entrance Special English Exam (IUUESEE). Fourteen thousand one hundred seventy two foreign-language test takers (including four groups of Azeri, Persian, Kurdish, and Luri test takers) were chosen for the study. Uniform DIF (UDIF) and Non-uniform DIF (NUDIF) analyses were conducted on data from the four versions of IUUESEE. After establishing the unidimensionality and local independence of the data, DIF findings showed that Luri test takers were more advantaged than other native language groups across the subtests. NUDIF analysis uncovered that almost all subtests functioned in favor of low-ability test takers who haven’t been expected to outperform high-ability test takers. A probable explanation for native language-ability DIF was that Luri and low-ablity test takers were more likely to venture lucky guesses. Thoughtless errors and guessing, test-wiseness, overconfidence, stem length, unappealing distractors, and time were proposed as possible causes of DIF in IUUESEE. It was also found that the reading subtest included the large number of items with significant DIF. | ||
کلیدواژهها | ||
Iranian Undergraduate University Entrance Special English Exam (IUUESEE)؛ Rasch Analysis؛ Differential Item Functioning؛ Native language | ||
مراجع | ||
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