The article that examined the effectiveness of in-jail substance abuse treatment found that over a 1-year period following release from custody, inmates who participated in a 6-week jail drug treatment program remained significantly longer in the community until rearrest, experienced fewer arrests, and served less jail time compared to a control group of untreated inmates. A study that examined the impact of group therapy for adult substance abusers on probation who were also involved in a self-help group found that group therapy combined with the self-help program produced more positive behaviors than self-help groups alone. Another study that examined differences in family variables between adult probationers from alcoholic homes and those from non alcoholic homes found significant differences in the areas of family violence, abuse, delinquency, running away, and addiction. The fourth paper describes the nature and usefulness of process evaluation techniques for corrections- based drug treatment programs, with attention to their importance in determining what treatment programs succeed or fail. For individual articles, see NCJ 144518-21. Article references and tabular data