A series of dropout-control comparisons indicated that the FinnTwin12 subsample examined here did not significantly differ from those not in the subsample in terms of sex, parental antisocial behavior, parental alcohol dependence symptoms, or adolescent externalizing. However, those in the subsample experienced more life events on average compared to those not in the subsample (Cohen’s d = 0.09, which corresponds to a small effect size). Descriptive statistics and zero-order correlations for the focal variables are presented in Table 7. Life events, parental antisocial behavior, and parental alcohol dependence symptoms were positive and significant predictors of adolescent externalizing. Both measures of parental externalizing behaviors were positively intercorrelated, and were positively correlated with adolescent externalizing.
