This report describes an investigation of the recent senior adult theatre movement conducted by the American Theatre Association Senior Adult Theatre Project. Sections of the report concern: (1) the types of senior adult theatre organizations reporting, including those developed by parent theatre organizations and residential communities and those sponsored by universities and colleges and by civic and social organizations; (2) the goals and objectives of senior adult theatre groups, including therapy, issue exploration, cross generational contact, professional training, entertaining audiences, and touring; and (3) working principles and techniques practiced by senior adult theatre groups, such as play reading, variety, oral history, original play development, and creative drama and improvisational techniques. Other sections discuss theatre attendance programs, key variables in senior adult theatre, the question of artistic quality in senior adult theatre, and research in senior adult theatre. The appendixes include a list of contributors to the report, a selected reading list, and a directory of reporting senior adult theatre groups. (MKM)