. 2015 Mar 25;75(6):954–978. doi: 10.1177/0013164415575147

Table 1.

Three Discrimination Parameter Conditions for the Bifactor Models.

Items	Bifactor low			Bifactor high			Bifactor-like
	G	$g_{1}$	$g_{2}$	G	$g_{1}$	$g_{2}$	G	$g_{1}$	$g_{2}$
1-200	Cos(π/12) × MDISC	Cos(π/2.5) × MDISC	0	Cos(π/6) × MDISC	Cos(π/3) × MDISC	0	Cos(π/6) × MDISC	Cos(π/3) × MDISC	0
201-400	Cos(π/12) × MDISC	0	Cos(π/2.5) × MDISC	Cos(π/6) × MDISC	0	Cos(π/3) × MDISC	Cos(π/6) × MDISC	0	Cos(π/3) × MDISC
401-600	—	—	—	—	—	—	Cos(π/6) × MDISC	0	0

Note. G = general factor; $g_{1}$ = first group factor; $g_{2}$ = second group factor; MDISC = multidimensional discrimination index.