It was hypothesized that abused, chemically dependent adolescents would demonstrate increased incidents of self-abuse, acting out, running away, more frequent out of home placements, and other behavioral sequelae. While the abused group had a higher incidence of prior social service and mental health intervention, 68 percent of these abuse cases had not been reported by children, family, or interviewers prior to the adolescents admission to the chemical dependency residential treatment facility. This chemically dependent previously abused group was differentiated from a comparison group of nonabused nonchemically dependent adolescents. Results indicated a higher incidence of acting out behavior, runaways, legal involvement, and sexual promiscuity within the abused group. Tabular data and 13 references. (Author abstract modified)