Columbia Counseling Services, 16 supervisors of beginning practicum counselors rated the importance to good supervision of 42 supervisor behaviors. At the end of their first semester of training, 31 beginning practicum counselors rated the frequency with which their supervisors actually performed each of the 42 supervisor behaviors. The counselors also rated the effectiveness of supervision on three dimensions: (a) satisfaction with supervision, (b) supervisor competence, and (c) contribution of supervision to improved counselor ability. In general, supervisors perceived supervision as primarily providing feedback to supervisees. Beginning counselors rated their supervision as good, however, if (a) a personal and pleasant supervisor-supervisee relationship existed; (b) supervisors provided relatively structured supervision sessions, especially during early sessions; and (c) supervisors directly taught beginning counselors how to counsel (by example, by using literature, and by didactic instruction) and then encouraged the new counselors to try out their new skills.