Large-scale Assessments in Education

An IERI – International Educational Research Institute Journal

Table 8 Model fit indices of the measurement invariance models

From: Exploring the relationship between process data and contextual variables among Scandinavian students on PISA 2012 mathematics tasks

Model	CFI	RMSEA	SRMR	AIC	BIC	Δχ²	p-value
Configural	0.97	0.081	0.039	28234	28850		–
Weak	0.968	0.075	0.042	28231	28784	16.269	0.18
Strong	0.958	0.078	0.049	28268	28757	60.273	0.000***
Strict	0.952	0.068	0.054	28262	28562	44.847	0.15
Structural	0.949	0.066	0.062	28261	28498	23.57	0.02*

Δχ² is the change in chi-square from the one model above to the current reduced model. The bold values indicate the best fit among models under the fit indices.
***p ≤ 0.001

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