An association between disturbed interpersonal relations and poor adjustment has often been found among college students. In particular, students' roommates have a substantial effect on their university experiences. To test the effectiveness of preventive intervention in improving roommate relationships, 79 college students participated in a relationship skills workshop designed to improve the community social network in the residence halls. Groups were led by resident assistants from within the community. Pre-, post-, and follow-up assessments were collected from the 79 experimental and 136 control subjects. The level of communication between roommates was found to be significantly related to adjustment, competence, relationship quality, and perceptions of the social environment. Workshop participation significantly improved communications between roommates. The findings suggest that relationship skills workshops within a residential community may facilitate students' adjustment in college and the development of interpersonal competence critical in future relationships. (Author/JAC)