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Global Model Fit Indices of CFA Models
| Model | χ2
|
df | RMSEA
|
||
|---|---|---|---|---|---|
| Y9 | Y10 | Y9 | Y10 | ||
| Correlated-factor | 1,548.4 | 1,417.1 | 458 | .070 | .064 |
| Second-order factor | 1,547.8 | 1,418.0 | 460 | .069 | .064 |
| Bifactor | 1,210.8 | 997.9 | 432 | .061 | .051 |
| Modified bifactor | 1,458.3 | 1,244.7 | 443 | .068 | .060 |
| Modified bifactor (correlated uniqueness) | 1,138.8 | 987.0 | 440 | .057 | .049 |
Note. CFA = confirmatory factor analysis; RMSEA = root-mean-square error of approximation; Y9 = Year 9; Y10 = Year 10.
