Rg. Steele et al., PREDICTING ALCOHOL AND DRUG-USE IN EARLY ADULTHOOD - THE ROLE OF INTERNALIZING AND EXTERNALIZING BEHAVIOR PROBLEMS IN EARLY ADOLESCENCE, American journal of orthopsychiatry, 65(3), 1995, pp. 380-388
Unique and interactive internalizing and externalizing behavior proble
ms in adolescence were examined in relationship to drug and alcohol us
e in young adulthood. Results indicated that higher externalizing scor
es in adolescence predicted more alcohol use in young adulthood for bo
th males and females and also predicted more marijuana and hard drug u
se for males. Lower internalizing scores were found to predict more ma
rijuana and hard drug use in young adulthood for boys, but not for gir
ls.