Table 1.

GDIs for Different Distribution, Item Discrimination, and Q-Vectors.

Condition	Dominant	Low discrimination			High discrimination
	α	q 100	q 110	q 111	q 100	q 110	q 111
1	None	0.090	0.068	0.039	0.160	0.120	0.070
2	(1,0,0)	0.007	0.004	0.002	0.013	0.006	0.003
3	(1,1,0)	0.007	0.010	0.002	0.013	0.019	0.003
4	(1,1,1)	0.007	0.010	0.012	0.013	0.019	0.022

Note. Numbers in bold represent the highest GDI in each condition for fixed item discrimination. GDI = G-DINA model discrimination index; G-DINA = generalized DINA; DINA = deterministic inputs, noisy “and” gate.