longitudinal pattern of externalizing behavior could be differentiated (p < .01). Regarding the addition of a fourth distinct pattern of externalizing problems, BIC and AIC once again decreased (20275.21 and 20176.97, respectively), while the overall quality of classification was further reduced (entropy went from .86 to .82). The LMR-LRT indicated that the addition of a fourth class would not result in significant improvement in model fit (p = .06). Figure 2 depicts these three GMM estimated externalizing trajectories.