Item performance across native language groups on the Iranian National University Entrance English Exam: a nationwide study

Bormanaki, Hamidreza Babaee; Ajideh, Parviz

doi:10.1186/s40468-022-00185-2

Language Testing in Asia

Table 12 Results of uniform DIF analysis of items (IUUESEE 2019)

From: Item performance across native language groups on the Iranian National University Entrance English Exam: a nationwide study

Item	Class A	DIF	DIF SE	Class B	DIF	DIF SE	DIF Contrast	Welch t	df	p
3	Azeri	1.18	0.13	Luri	0.61	0.24	0.57	2.13	183	0.0345
5	Azeri	−1.86	0.08	Luri	−2.29	0.17	0.43	2.31	414	0.0212
11	Azeri	0.32	0.08	Luri	0.78	0.17	−0.46	−2.42	307	0.0160
12	Azeri	−1.93	0.10	Luri	−2.40	0.21	0.47	2.06	274	0.0406
14	Azeri	−0.32	0.09	Kurdish	0.18	0.15	−0.50	−2.87	405	0.0043
15	Azeri	−0.43	0.08	Luri	0.11	0.17	−0.54	−2.86	240	0.0046
16	Azeri	0.27	0.08	Luri	−0.28	0.15	0.55	3.15	307	0.0018
20	Azeri	−1.72	0.08	Kurdish	−1.18	0.12	−0.54	−3.66	692	0.0003
21	Azeri	2.35	0.15	Kurdish	1.82	0.22	0.53	1.98	415	0.0482
22	Azeri	0.50	0.14	Persian	1.03	0.13	−0.52	−2.72	582	0.0067
27	Azeri	0.51	0.09	Kurdish	−0.01	0.15	0.52	2.96	380	0.0033
35	Azeri	1.36	0.11	Kurdish	0.87	0.17	0.49	2.46	427	0.0142
35	Azeri	1.36	0.11	Luri	0.32	0.20	1.04	4.64	229	0.0000
35	Azeri	1.36	0.11	Persian	0.66	0.09	0.70	4.95	INF	0.0000
36	Azeri	−0.36	0.08	Luri	−0.87	0.16	0.51	2.79	259	0.0057
37	Azeri	−0.20	0.08	Luri	0.30	0.18	−0.50	−2.50	231	0.0130
38	Azeri	2.84	0.16	Persian	3.31	0.18	−0.47	−1.99	INF	0.0466
39	Azeri	−2.63	0.11	Luri	−2.15	0.18	−0.48	−2.25	405	0.0251
40	Azeri	−0.94	0.08	Luri	−0.22	0.15	−0.72	−4.21	300	0.0000
42	Azeri	−0.88	0.09	Kurdish	−0.38	0.15	−0.50	−2.86	384	0.0045
50	Azeri	−0.97	0.12	Persian	−1.54	0.14	0.57	3.08	724	0.0022
51	Azeri	−1.18	0.10	Luri	−0.74	0.20	−0.44	−1.97	175	0.0500
54	Azeri	0.93	0.13	Luri	0.39	0.28	0.54	1.74	99	0.0843
55	Azeri	1.52	0.13	Kurdish	0.94	0.19	0.58	2.47	333	0.0140
62	Azeri	0.07	0.16	Kurdish	−0.37	0.22	0.44	1.60	194	0.1115
65	Azeri	0.92	0.19	Kurdish	1.38	0.33	−0.46	−1.22	122	0.2260
65	Azeri	0.92	0.19	Luri	−0.05	0.43	0.97	2.04	38	0.0484
66	Azeri	0.23	0.12	Luri	0.92	0.32	−0.68	−1.99	98	0.0494
68	Azeri	2.85	0.21	Kurdish	2.05	0.26	0.81	2.44	371	0.0151
70	Azeri	1.27	0.20	Luri	0.02	0.36	1.25	3.01	69	0.0036

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