. Author manuscript; available in PMC: 2015 Jan 1.

Published in final edited form as: Behav Ther. 2014 Jun 2;46(1):40–53. doi: 10.1016/j.beth.2014.05.005

Table 3.

Results of Tests for Invariance in MASC-C across Participants with ASD or TD

	Model Fit					Model Difference

Models (M)	χ²	df	RMSEA [CI]	CFI	TLI	ΔM	Δdf	Δχ²	IFI
M1: Configural Invariance (Unconstrained)	2346.47^***	1390	.040 [.038 – .043]	.784	.757
M2: Weak Factorial/Metric Invariance¹	2391.78^***	1425	.040 [.037 – .043]	.781	.761	M2 – M1	35	45.31	.010
M3: Strong Factorial/Scalar Invariance	2505.20^***	1464	.041 [.038 – .044]	.765	.749	M3 – M2	39	113.42^***	.025
M4: Structural Invariance	2417.63^***	1431	.040 [.038 – .043]	.777	.757	M4 – M2	6	25.82^***	.006

^***

p < .001.

^**

p < .01.

p < .05.

RMSEA = Root-Mean-Square Error of Approximation. CI = confidence interval. CFI = Comparative Fit Index. TLI = Tucker-Lewis Index. PCFI = Parsimony-Adjusted CFI. IFI = Incremental Fit Index.

Significant degradation in fit is seen after this model.