In predicting to volume of alcohol use in high school given any alcohol use (Part II, lower panel of Table 4), findings indicated that, in addition to average alcohol levels in middle school, the intercept at Grade 9 was predicted by both peer alcohol use and by the boy’s antisocial behavior/deviant associations, also assessed at Grade 9. None of the Grade 9 predictors were significantly associated with the volume slope in a positive direction. Depressed mood was negatively associated with the slope. Regarding the change-score predictors, increases in antisocial behavior/deviant associations and peer alcohol use were associated with increases in volume of use, whereas relative increases in parental monitoring were associated with decreases in the volume of use.
