Table 6.

NCDIF Recommended Effect Size—Large DIF: Category C (3PL).

Model →	3PL	3PL	3PL	3PL	3PL	3PL	3PL	3PL
Discrimination →	0.25	0.50	0.75	1.00	1.25	1.50	1.75	2.00
Difficulty ↓
−3	0.012	0.003	0.001	<0.001	<0.001	<0.001	<0.001	<0.001
−2	0.017	0.008	0.003	0.002	0.001	<0.001	<0.001	<0.001
−1.5	0.019	0.012	0.006	0.004	0.002	0.002	0.001	0.001
−1	0.021	0.015	0.011	0.008	0.006	0.004	0.003	0.003
−0.5	0.023	0.019	0.015	0.012	0.010	0.008	0.007	0.006
0	0.024	0.021	0.018	0.016	0.014	0.012	0.011	0.010
0.5	0.024	0.022	0.020	0.017	0.016	0.015	0.015	0.014
1	0.024	0.021	0.019	0.017	0.016	0.016	0.015	0.015
1.5	0.023	0.019	0.017	*	*	*	*	*
2	0.021	0.017	*	*	*	*	*	*
3	0.019	*	*	*	*	*	*	*

Note. NCDIF = noncompensatory differential item functioning; DIF = differential item functioning.

^*MH never reached large DIF (Category C). Therefore, no corresponding NCDIF value is reported.