Table 2: Confirmatory factor analysis and analysis of invariance.
Note: * p < .05, ** p < .01; Metric Invariance Fit Criteria (M2-M1): ΔCFI ≤ .01, ΔRMSEA ≤ .015 and ΔSRMR ≤ .03; Scalar (M3-M2) and Strict (M4-M3) Invariances: ΔCFI ≤ .01, ΔRMSEA ≤ .015 and ΔSRMR ≤ .015 (as recommended by Putnick & Bornstein, 2016).
a RMSEA = 0 because df > X2.
| Model fitting | X2 | df | CFI | RMSEA | SRMR | | | | | | |
| 13.47 | 9 | .99 | .03 | .04 | | | | | | |
| Invariance test | X2 | df | CFI | RMSEA | SRMR | ΔX2 | Δdf | ΔCFI | ΔRMSEA | ΔSRMR | Decision |
| Gender (n = 478 ; 1 missing datum) |
| M1.Configural | 17.79 | 18 | 1 | .00a | .04 | | | | | | |
| M2.Metric | 29.99 | 24 | .99 | .03 | .06 | 12.20 | 6 | -.01 | .03 | .01 | Accepted |
| M3.Scalar | 36.49 | 29 | .99 | .03 | .06 | 6.50 | 5 | .00 | .00 | .00 | Accepted |
| M4.Strict | 44.09 | 35 | .98 | .03 | .06 | 7.60 | 6 | -.01 | .00 | .01 | Accepted |
| Age groups (n = 479) [under 26 vs. over 26 years of age] |
| M1.Configural | 19.99 | 18 | 1 | .02 | .05 | - | - | - | - | - | - |
| M2.Metric | 28.09 | 24 | .99 | .03 | .06 | 8.10 | 6 | -.01 | .01 | .01 | Accepted |
| M3.Scalar | 57.43** | 29 | .95 | .06 | .07 | 29.35** | 5 | -.05 | .04 | .01 | Rejected |
| M4.Strict | - | - | - | - | - | - | - | - | - | - | - |