Table 6. Correlations among Intercept and Change Factors from Preliminary Multivariate Latent Growth Curve Models.
| Factor | Impulsivity | Sensation Seeking | ||
|---|---|---|---|---|
|
| ||||
| Intercept | Change | Intercept | Change | |
| Impulsivity | ||||
| Intercept | - | |||
| Change | -.47* | - | ||
| Sensation seeking | ||||
| Intercept | .56* | -.39* | - | |
| Change | -.37* | .67* | -.58* | - |
| Alcohol use | ||||
| Intercept | .40* | -.26* | .34* | -.23* |
| Change | -.15* | .30* | -.03 | .14 |
| Marijuana use | ||||
| Intercept | .32* | .01 | .18* | -.13 |
| Change | -.04 | .09 | .06 | .02 |
| Cigarette use | ||||
| Intercept | .25* | -.13 | .15* | -.11 |
| Change | .09* | .11 | .08 | -.01 |
Note. Correlations between impulsivity and sensation seeking factors are taken from alcohol use models. Correlations from other substance use models did not differ from those reported here in significance and differed in magnitude by at most .03. Intercept-change correlations for alcohol use, marijuana use, and cigarette use were r = -.48, p < .001, r = -.33, p < .001, and r = -.27, p < .05, respectively.
*
p < .05.