Table 4.
Model Fit Indices for the NCS-18 and NCS-6 in the United States and the United Kingdom.
| χ2(gl) | CFI | TLI | RMSEA [90% CI] | AIC | BIC | ||
|---|---|---|---|---|---|---|---|
| United States | NCS-18 | 628.15 (p < .001) | .92 | .91 | .067 [.062, .071] | 38355 | 38610 |
| NCS-6 | 55.96 (p < .001) | .97 | .95 | .080 [.063, .097] | 12454 | 12539 | |
| United Kingdom | NCS-18 | 410.49 (p < .001) | .89 | .88 | .065 [.059, .072] | 23084 | 23309 |
| NCS-6 | 20.65 (p < .05) | .98 | .97 | .052 [.028, .077] | 7388 | 7463 |
Note. CI = confidence interval; NCS = Need For Cognition Scale; CFI = comparative fit index; TLI = Tucker–Lewis index; RMSEA = root mean square error of approximation; AIC = Akaike information criterion; BIC = Bayesian information criterion.