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Table 9 Models’ comparison for invariance tests for URS for students and professionals invariance (joining samples 2 and 3; N = 1084)

From: Factorial validity and measurement invariance of the uncertainty response scale

Invariance levelDefinitionModelχ2dfΔ χ2Δ dfpCFIRMSEAΔ CFIΔ RMSEAΔ SRMR
Configural invarianceSame factor structureM11345.358538   .93.037   
Metric invarianceSame factor structure and factor loadingsM2-M11388.30356042.94622.005.93.037− .0020.001
Scalar invarianceSame factor structure, factor loadings, and interceptsM3-M21483.31758595.01325< .001.92.038− .006.001.000
Error variance invarianceSame factor structure, factor loadings, and error variancesM4-M31486.2785912.9626.814.92.0370− .001.000
Structural invarianceSame factor structure, factor loadings, error variances, and factors’ covarianceM5-M41576.36361990.08528< .001.92.038− .005.001.000
  1. χ2 Chi-square, df degrees of freedom, Δ χ2 difference between model’s χ2, Δ df difference between models’ df, p p value, CFI comparative fit index, RMSEA root mean square error of approximation, Δ CFI difference between model’s CFI’s, Δ RMSEA difference between model’s RMSEA, Δ SRMR difference between model’s standardized root mean square residuals, M1 to M5 models tested