The results showed that nonassaultive juvenile offenders used a greater variety of drugs than those who committed serious assaultive crime. However, when serious assaultive crimes were committed, the juvenile offenders involved described themselves more often as having been under the influence of one or more drugs. Alcohol was the drug most often linked with violence among these youths. Secobarbital was the second drug most frequently associated with violent crime, although it was used by these juveniles less often than alcohol, marijuana, amphetamines, and psychedelic drugs. The respondents selected secobarbital as the substance most likely to induce or exacerbate aggression. 3 tables and 13 references