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Table 3 Fit indices for invariance test of the four-factor model (16 items)

From: The Academic Self-Regulation Questionnaire: a study with Portuguese elementary school children

Model X 2 df p CFI RMSEA ΔX 2 a p ΔCFI
Configural invariance for gender 327 196 < .001 .973 .063    
Metric invariance for gender 333.3 208 < .001 .974 .059 6.98 .859 − .001
Scalar invariance for gender 371.5 252 < .001 .975 .053 39.04 .684 − .002
Configural invariance for grade 349.5 196 < .001 .969 .068    
Metric invariance for grade 353.8 208 < .001 .971 .064 9.0 .702 − .002
Scalar invariance for grade 392.1 252 < .001 .972 .057 39.96 .645 − .001
  1. nmale = 178; nfemale = 163; n3rd = 218; n4th = 123; a = the chi-square value for WLSMV cannot be used for chi-square difference testing in the regular way as described on the Mplus website. WLSMV difference testing was done using the DIFFTEST option