Table 7. Factor Correlations and Regression Coefficients from Multivariate Latent Growth Curve Models Controlling for Initial Levels of Impulsivity, Sensation Seeking, and Substance Use.
| Factor | Impulsivity | Sensation Seeking | ||
|---|---|---|---|---|
|
| ||||
| Intercept | Change | Intercept | Change | |
| Impulsivity | ||||
| Intercept | - | - | ||
| Change | -.34* | - | ||
| Sensation seeking | ||||
| Intercept | .56* | -.19 | - | - |
| Change | -.06 | .61* | -.55* | - |
| Alcohol use | ||||
| Intercept | .40* | -.06 | .34* | -.02 |
| Change | -.04 | .28* | .16* | .15* |
| Marijuana use | ||||
| Intercept | .32* | .17 | .18* | -.02 |
| Change | .02 | .17* | .12* | .05 |
| Cigarette use | ||||
| Intercept | .25* | -.02 | .15* | -.01 |
| Change | .14* | .18* | .05 | .05 |
Note. Values are correlation coefficients (for correlated intercepts and changes) and standardized regression coefficients (for all other associations). Associations between impulsivity and sensation seeking factors are taken from alcohol use models; associations from other substance use models did not differ from those reported here in significance and differed in magnitude by .07 at most. Intercept-change associations for alcohol use, marijuana use, and cigarette use were β = -.48, p < .001, β = -.36, p < .001, and β = -.32, p < .001, respectively.
*
p < .05.