Table 3.
Model | χ2 | df | p (Δχ2 test) | CFI | TLI | RMSEA |
---|---|---|---|---|---|---|
1. Only method factors | 1,364.46 | 77 | .69 | .65 | .109 | |
2. One factor | 568.85 | 96 | <.001 | .89 | .90 | .059 |
3. Two factors | 424.50 | 95 | <.001 | .92 | .93 | .050 |
4. Three factors | 393.55 | 93 | <.001 | .93 | .93 | .048 |
5. Four factors | 313.14 | 93 | <.001 | .95 | .95 | .041 |
6. Four factors, three cross-loadings | 247.64 | 91 | <.001 | .96 | .96 | .035 |
Note. For Sample 2, N = 1,399. All models included two orthogonal method factors, and the observed variables were regressed on sex and age simultaneously with testing of the factor model. With the weighted least squares mean and variance adjusted (WLSMV) estimator, the chi-square and degrees of freedom were estimated rather than calculated. The appropriate DIFFTEST procedure in Mplus was applied to perform the Δχ2 test. CFI = comparative fit index; TLI = Tucker–Lewis index; RMSEA = root-mean-square error of approximation.