Table 7.

Major fitting degree indices of DWP.

Value	χ2	df	χ2/df	GFI	RMSEA	RMR	CFI	NFI
M1: Single-factor model	855.113	65	13.156	0.602	0.210	0.063	0.739	0.725
M2: 2-factor model	476.2	64	7.441	0.752	0.153	0.042	0.864	0.847
M3: 3-factor model	373.554	62	6.025	0.802	0.135	0.038	0.897	0.880
M4: 1-factor model	239.689	61	3.929	0.878	0.100	0.041	0.941	0.923