. Author manuscript; available in PMC: 2024 Jan 19.

Published in final edited form as: Psychol Men Masc. 2021 Nov 18;23(1):133–142. doi: 10.1037/men0000373

Table 4.

Model Fit Statistics and Comparisons of Nested Multiple Gender Group Models of the TAS-20

Invariance model	χ²(df)	CFI, TLI	RMSEA [90% CI]	SRMR	BIC
Configural	1,695.23 (340)	0.746, 0.716	0.093 [0.089, 0.098]	0.088	53,558.88
Metric	1,750.52 (359)	0.739, 0.724	0.092 [0.088, 0.096]	0.097	53,481.85
Scalar	1,834.99 (379)	0.727, 0.727	0.092 [0.088, 0.096]	0.099	53,428.79

Model comparison	Δχ²(df)	p	ΔCFI	Conclusion
Config. versus metric	50.95 (19)	<.001	0.007	Prefer metric, metric invariance supported
Metric versus scalar	81.90 (20)	<.001	0.012	Significant fit degradation, reject scalar invariance

Note. TAS-20 = Toronto Alexithymia Scale-20; CFI = Comparative Fit Index; TLI = Tucker-Lewis Index; RMSEA = root-mean-square error of approximation; CI = confidence interval; SRMR = standardized root-mean-square residual; BIC = Bayes Information Criterion.