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. 2020 Jun 3;11:1086. doi: 10.3389/fpsyg.2020.01086

TABLE 2.

Model fit indices for each IRI measurement model.

Model χ2 df χ2/df CFI NNFI SRMR RMSEA RMSEAt AIC BIC
M1a. Four-factor model 679.569 203 3.436 0.809 0.782 0.070 0.066 0.072 25405.532 25713.586
M1b. Four-factor high-order model 700.009 205 3.415 0.801 0.776 0.073 0.067 0.073 25421.973 25721.469
M1c. Four-factor bifactor model 514.145 187 2.749 0.869 0.838 0.067 0.057 0.063 25272.109 25648.619
M2a. Three-factor(PT+EC+FS) model 448.910 116 3.870 0.816 0.784 0.064 0.073 0.081 19511.533 19742.573
M2b. Three-factor (PT+EC+FS) high-order model 448.910 116 3.870 0.816 0.784 0.064 0.073 0.081 19511.533 19742.573
M2c. Three-factor (PT+EC+FS) bifactor model 302.921 102 2.970 0.889 0.852 0.061 0.061 0.069 19393.544 19684.483
M3a. Interpersonal reactivity three-factor [empathy(PT+EC)+FS+PD] model 874.112 206 4.243 0.732 0.699 0.079 0.078 0.083 25594.076 25889.294
M3b. Interpersonal reactivity three-factor [empathy (PT+EC)+FS+PD] high-order model 874.112 206 4.243 0.732 0.699 0.079 0.078 0.083 25594.076 25889.294
M3c. Interpersonal reactivity three-factor [empathy (PT+EC)+FS+PD] bifactor model 604.125 187 3.231 0.833 0.793 0.066 0.065 0.070 25362.088 25738.598
M4a. Two-factor (PT+EC) model 142.006 43 3.302 0.903 0.875 0.052 0.066 0.078 11957.736 12103.206
M4b. Two-factor (PT+EC) high-order model 142.006 42 3.381 0.902 0.871 0.052 0.067 0.079 11959.736 12109.485
M4c. Two-factor (PT+EC) bifactor model 73.047 33 2.214 0.961 0.934 0.031 0.048 0.063 11908.777 12097.032
M5a. Two-factor (affective empathy: EC+PD; cognitive empathy: PT+FS) model 1313.585 208 6.315 0.557 0.507 0.107 0.100 0.105 26029.549 26316.210
M5b. Two-factor (affective empathy: EC+PD; cognitive empathy: PT+FS) high-order model 1313.585 207 6.346 0.556 0.505 0.107 0.100 0.105 26031.549 26322.488
M5c. Two-factor (affective empathy: EC+PD; cognitive empathy: PT+FS) bifactor model 780.843 187 4.176 0.762 0.706 0.081 0.077 0.083 25538.806 25915.316
M6a. Two-factor (affective empathy: EC+PD; cognitive empathy: PT) model 666.163 103 6.468 0.651 0.594 0.110 0.101 0.109 18260.189 18469.837
M6b. Two-factor (affective empathy: EC+PD; cognitive empathy: PT) high-order model 666.163 102 6.531 0.650 0.589 0.110 0.102 0.109 18262.189 18476.115
M6c. Two-factor (affective empathy: EC+PD; cognitive empathy: PT) bifactor model 193.021 88 2.193 0.935 0.911 0.041 0.047 0.056 17817.048 18090.873

PT, perspective taking; EC, empathic concern; FS, fantasy, PD, personal distress; boldface font indicates that the fit index reaches the empirical critical value. All of the model’s χ2 estimates are significant.