DIFFERENTIAL ITEM FUNCTIONING (TEST BIAS) ANALYSIS PARADIGM ACROSS MANIFEST AND LATENT EXAMINEE GROUPS (ON THE CONSTRUCT VALIDITY OF IELTS)

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BIRJANDI P.; AMINI MOHADESEH

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Journal: JOURNAL OF HUMAN SCIENCES Year:2007 | Volume:- | Issue:55 (SPECIAL ISSUE ON LINGUISTICS) Page(s): 172-153

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Information Journal Paper

Title

DIFFERENTIAL ITEM FUNCTIONING (TEST BIAS) ANALYSIS PARADIGM ACROSS MANIFEST AND LATENT EXAMINEE GROUPS (ON THE CONSTRUCT VALIDITY OF IELTS)

Author(s)

BIRJANDI P. | AMINI MOHADESEH | Issue Writer Certificate

Keywords

BIASQ3

CONSTRUCT VALIDITYQ3

DIFFERENTIAL ITEM FUNCTIONING (DIF)Q3

MANIFEST VS. LATENT GROUPSQ3

MANTEL HAENSZEL PROCEDUREQ3

Abstract

When important decisions are made based on test scores, it is critical to avoid BIAS, which may unfairly influence examinees’ scores. BIAS is the presence of some characteristics of an item that results in differential performance for individuals of the same ability but from different ethnic, age, sex, academic, cultural, or religious groups. The investigation of differential item functioning (DIF) is crucial in language proficiency tests in which test-takers with adverse backgrounds are involved, because DIF items pose a considerable threat to the validity of tests. This study mainly focuses on the detection and investigation of the possible multi-dimensional causes of DIF in IELTS, Listening and Reading sub-sections. The main aim of this project is to provide test constructors with information as detailed as possible about sources of DIF in order to help them avoid item BIAS in future forms of the test. The study was carried out in three steps. First, DIF items were identified using Item Response Theory (IRT) Likelihood Ratio Approach (LR) and Mantel-Haenszel statistical procedure. The second stage was an investigation of the multi-variant sources of DIF for different groups of candidates and whether it worked to their advantage or disadvantage. At the third stage, it was decided whether a possible source of DIF was relevant or irrelevant to the construct the test claimed to measure.

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APA: Copy

BIRJANDI, P., & AMINI, MOHADESEH. (2007). DIFFERENTIAL ITEM FUNCTIONING (TEST BIAS) ANALYSIS PARADIGM ACROSS MANIFEST AND LATENT EXAMINEE GROUPS (ON THE CONSTRUCT VALIDITY OF IELTS). JOURNAL OF HUMAN SCIENCES, -(55 (SPECIAL ISSUE ON LINGUISTICS)), 172-153. SID. https://sid.ir/paper/403486/en

Vancouver: Copy

BIRJANDI P., AMINI MOHADESEH. DIFFERENTIAL ITEM FUNCTIONING (TEST BIAS) ANALYSIS PARADIGM ACROSS MANIFEST AND LATENT EXAMINEE GROUPS (ON THE CONSTRUCT VALIDITY OF IELTS). JOURNAL OF HUMAN SCIENCES[Internet]. 2007;-(55 (SPECIAL ISSUE ON LINGUISTICS)):172-153. Available from: https://sid.ir/paper/403486/en

IEEE: Copy

P. BIRJANDI, and MOHADESEH AMINI, “DIFFERENTIAL ITEM FUNCTIONING (TEST BIAS) ANALYSIS PARADIGM ACROSS MANIFEST AND LATENT EXAMINEE GROUPS (ON THE CONSTRUCT VALIDITY OF IELTS),” JOURNAL OF HUMAN SCIENCES, vol. -, no. 55 (SPECIAL ISSUE ON LINGUISTICS), pp. 172–153, 2007, [Online]. Available: https://sid.ir/paper/403486/en

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