Also presented in Figure 3 are the mean psychopathology, personality, and cognitive ability values for each trajectory group. Because the goal of this analysis was to determine whether the external correlates of alcohol use change monotonically with trajectory rank, we only displayed variables that are correlated with alcohol use and of at least modest effect size (r > .10). Measures not included were several trait scales from the MPQ, including Social Potency, Achievement, Social Closeness, Well-Being, Stress Reactivity, and Positive Emotionality. As seen in Figure 3, the correlates of alcohol use show perfect rank-order correlation with trajectory group (rs = 1.00). When split into Cohorts 1, 2, and 3, rank-order correlations are .98, 1.00, and .98, respectively.
