Table 3.

Item Parameters Based on Age, Significance Levels, and Effect Sizes of Differential Item Functioning.

	Oldera		Youngerb
Item	a	b	a	B	p	ES	SID	UID
1	0.44	−2.05	0.53	−0.80	.05	.13	−.15	.15
2	0.72	−1.01	0.68	−0.32	.04	.19	−.16	.16
3	0.80	−1.09	0.54	−0.21	.71	.18	−.22	.22
4	0.85	−1.67	0.62	−0.95	.71	.15	−.17	.17
5	0.75	−0.99	0.51	0.21	.04	.18	−.27	.27
6	1.02	−1.40	1.13	−0.54	.05	.22	−.19	.19
7	1.26	−1.15	0.84	−0.72	.01*	.20	−.15	.15
8	1.01	−1.23	0.78	−0.56	.64	.20	−.18	.18
9	1.05	−0.65	0.80	0.09	.11	.24	−.22	.22
10	1.02	−0.97	0.77	−0.44	.01*	.21	−.16	.16
11	0.66	−1.90	0.44	−1.36	.52	.11	−.14	.14
12	0.58	−1.19	0.56	0.44	.000*	.17	−.32	.32
13	1.07	−1.97	0.63	−1.08	.000*	.13	−.21	.21
14	0.93	−0.66	0.65	0.44	.67	.22	−.28	.28
15	1.20	−0.83	0.55	−0.18	.005*	.21	−.21	.22
16	0.99	−0.17	0.38	1.37	.003*	.21	−.24	.25
17	0.24	−4.02	0.58	−1.08	.000*	.11	−.12	.12
18	0.37	−2.23	0.51	−1.03	.03	.12	−.10	.10
19	0.32	−1.33	0.43	−0.07	.03	.13	−.15	.15
20	0.97	0.31	0.49	1.63	.02	.21	−.18	.18
21	0.81	−0.12	0.43	0.95	.12	.20	−.18	.18
22	1.14	−0.95	0.79	0.18	.03	.23	−.33	.33
23	0.45	0.21	0.29	1.57	.78	.13	−.14	.14
24	0.71	−0.45	0.39	0.87	.25	.17	−.24	.24
25	0.51	0.36	0.32	1.26	.05	.14	−.09	.09

Note. ES = effect size; SID = signed item difference; UID = unsigned item difference.

^an = 639.

^bn = 698.

^*Significant after correction for multiple comparisons.