Table 4.
Comparison of Model Fit Between Unconditional Latent Growth Curve Models for Impulsivity, Neuroticism, Extraversion, and Problematic Alcohol Involvement
| Model | Model χ2 | df | Correction factorc | χ2 difference | df difference |
|---|---|---|---|---|---|
| Impulsivity | |||||
| Intercept only | 191.88 | 8 | 1.05 | ||
| Lineara | 57.17 | 5 | 1.08 | 134.71**** | 3 |
| Nonlinearb | 13.91 | 4 | 1.03 | 33.80**** | 1 |
| Neuroticism | |||||
| Intercept only | 156.72 | 8 | 1.13 | ||
| Lineara | 71.99 | 5 | 1.14 | 75.01**** | 3 |
| Nonlinearb | 10.07 | 4 | 1.11 | 49.97**** | 1 |
| Extraversion | |||||
| Intercept only | 220.64 | 8 | 1.04 | ||
| Lineara | 28.49 | 5 | 1.00 | 174.10**** | 3 |
| Nonlinearb | 22.86 | 4 | 0.86 | 3.65* | 1 |
| Problematic alcohol involvement | |||||
| Intercept only | 441.63 | 26 | 2.38 | ||
| Lineara | 155.21 | 23 | 2.25 | 84.82**** | 3 |
| Nonlinearb | 63.38 | 22 | 2.05 | 13.81**** | 1 |
Note. N = 483.
a
Comparison for the chi-square difference test is between intercept and linear models.
b
Comparison is between nonlinear and linear models.
c
Correction factor was used to conduct the Satorra-Bentler scaled chi-square difference tests.
*
p < .06.
****
p < .001.