Node-link mapping is a multipurpose visual communication technique in which ideas are represented by "nodes" and are connected to each other by named links that specify interrelationships. In the program under assessment, mapping counselors used either "free" or "guide" maps during their mapped sessions. "Free" maps were created by counselors in collaboration with residents to diagram or highlight critical points of group discussions. "Guide" maps are "fill-in" or pre-formed maps on selected topics. Approximately 50 "guide" maps were available to help counselors and residents focus group discussions and address critical issues. During group sessions, mapping counselors developed their maps on large boards clearly visible to group members. Residents completed maps during sessions by using lapboards or tables. A total of 380 probationers (residents) were randomly assigned to either mapping-enhanced or standard counseling. Compared to those in standard counseling, residents who received mapping gave more favorable evaluations to their group meetings, counselors, co-residents, and security staff. They also rated themselves higher on treatment effort and self-efficacy measures than did their counterparts. These findings suggest that mapping-enhanced counseling fosters more effective communication during meetings, promotes stronger therapeutic alliances, and thus enhances the perceptions of the effectiveness of the program and of the people associated with it. 2 figures, 4 tables, and 36 references