Table 3.

Model fit degree.

Model	X2/df	NFI	TLI	IFI	CFI	RMSEA
Single-factor model	13.987	0.461	0.416	0.480	0.477	0.177
Two-factor model	10.372	0.541	0.510	0.567	0.564	0.150
Three-factor model	5.811	0.746	0.748	0.780	0.779	0.108
Four-factor model	4.970	0.787	0.792	0.822	0.821	0.098
Five-factor model	1.200	0.950	0.990	0.991	0.991	0.022

NFI, Normed Fit Index; TLI, Tucker Lewis index; IFI, Incremental Fit Index; CFI, Comparative Fit Index; and RMSEA, Root Mean Square Error of Approximation.