Figure 1 presents a graph of the unconditioned change trajectories for Caucasians and African Americans. Specifically, Figure 1 shows the mean HED score over developmental age and the estimated trajectory of mean HED score over developmental age. As shown, the mean counts of HED increased along with age in both the Caucasian and African American respondents. The inflated and count intercept factors had means of αii = .00 and αci = .98 (respectively), p < .01 for Caucasian respondents and αii = .00 and αci = 1.13, p < .01 for African American respondents. The variances of these two intercept factors were significantly different from zero in both the Caucasian subsample (ψii =14.69 and ψci =.13, p < .01) and African American subsample (ψii =14.69 and ψci =.13, p < .01), implying that individuals had different starting values. These variances are identical because of the known-class mixture modeling that assumed equal variances between groups.
