The results of the model tests are presented for girls in Figure 1 and for boys in Figure 2. The models were fully saturated with no degrees of freedom; therefore, the fit to the data was perfect. Parent-child relationship quality appeared relatively stable across time (ß = .53 to .70, p<.01) as did substance use (cigarette use ß = .44 to .68, p<.01; alcohol use ß = .49 to .62, p<.01).