Table A2.
Fit of Bifactor Models.
| Difference Test | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Model/Constraint | χ2 (df) | p | χ2 (df) | p | RMSEA [CI] | SRMR | CFI | AIC | BIC |
| Unconstrained (Model 2; see Figure 3) | 272.90 (168) | 0.00 | — | — | 0.07 [0.06; 0.09] | 0.10 | 0.94 | 1896 | 2074 |
| Relations PP − CB | |||||||||
| SpeedPP − SpeedCB = 0 | 320.48 (169) | 0.00 | 47.59 (1) | <0.001 | 0.08 [0.07; 0.10] | 0.22 | 0.91 | 1941 | 2117 |
| SpeedPP − SpeedCB = 1 | 384.66 (169) | 0.00 | 111.76 (1) | <0.001 | 0.10 [0.09; 0.11] | 0.11 | 0.87 | 2005 | 2181 |
| SearchPP − SearchCB = 0 | 273.66 (169) | 0.00 | 0.76 (1) | 0.38 | 0.07 [0.05; 0.09] | 0.10 | 0.94 | 1894 | 2070 |
| CompPP − CompCB = 0 | 327.89 (169) | 0.00 | 54.99 (1) | <0.001 | 0.09 [0.07; 0.10] | 0.12 | 0.91 | 1949 | 2124 |
| CompPP − CompCB = 1 | 299.67 (169) | 0.00 | 26.77 (1) | <0.001 | 0.08 [0.06; 0.09] | 0.09 | 0.92 | 1920 | 2096 |
| Relations PP − WMC | |||||||||
| SpeedPP − WMC = 0 | 288.21 (169) | 0.00 | 15.31 (1) | <0.001 | 0.08 [0.06; 0.09] | 0.14 | 0.93 | 1909 | 2084 |
| SpeedPP − WMC = 1 | 308.05 (169) | 0.00 | 35.15 (1) | <0.001 | 0.08 [0.07; 0.10] | 0.10 | 0.92 | 1929 | 2104 |
| SearchPP − WMC = 0 | 274.86 (169) | 0.00 | 1.96 (1) | 0.16 | 0.07 [0.06; 0.09] | 0.10 | 0.94 | 1896 | 2071 |
| CompPP − WMC = 0 | 273.00 (169) | 0.00 | 0.10 (1) | 0.75 | 0.07 [0.05; 0.09] | 0.10 | 0.94 | 1894 | 2069 |
| Relations CB − WMC | |||||||||
| SpeedCB − WMC = 0 | 310.27 (169) | 0.00 | 37.37 (1) | <0.001 | 0.08 [0.07; 0.10] | 0.14 | 0.92 | 1931 | 2106 |
| SpeedCB − WMC = 1 | 296.45 (169) | 0.00 | 23.51 (1) | <0.001 | 0.08 [0.06; 0.09] | 0.10 | 0.92 | 1917 | 2093 |
| SearchCB − WMC = 0 | 273.03 (169) | 0.00 | 0.13 (1) | 0.71 | 0.07 [0.05; 0.09] | 0.10 | 0.94 | 1894 | 2069 |
| CompCB − WMC = 0 | 273.03 (169) | 0.00 | 0.14 (1) | 0.71 | 0.07 [0.05; 0.09] | 0.10 | 0.94 | 1894 | 2069 |
| Testing the Symmetry of Relations | |||||||||
| SpeedPP − WMC = SpeedCB − WMC | 277.40 (169) | 0.00 | 4.50 (1) | 0.03 | 0.07 [0.06; 0.09] | 0.10 | 0.94 | 1898 | 2073 |
| SpeedPP − SpeedCB = SpeedPP − WMC | 276.58 (169) | 0.00 | 3.68 (1) | 0.06 | 0.07 [0.06; 0.09] | 0.11 | 0.94 | 1897 | 2073 |
| SpeedPP − SpeedCB = SpeedCB − WMC | 272.92 (169) | 0.00 | 0.02 (1) | 0.88 | 0.07 [0.05; 0.09] | 0.10 | 0.94 | 1894 | 2069 |
Note. PP = paper-and-pencil tasks, BC = computer-based tasks. Difference Test = change in χ2 for the constrained models relative to their unconstrained parent model. CI = 95% confidence interval.