The authors attempt to bridge the gap between the research literature on supervision and its application to evaluating individual supervisor effectiveness. A conceptual framework is presented for making decisions about evaluation. In this framework the decision maker is directed to consider three issues-the purpose of evaluation, the developmental stage of the counselor, and the focus of evaluation-in selecting measures of' effectiveness. Within this context, some promising measures of supervision effectiveness are discussed, and methods for linking changes in supervisee functioning to supervisor interventions are considered.Although there are a number of reviews of research on psychotherapy training and supervision (e.g., Ford, 1979;Lambert, 1980;Matarazzo, 1978;Russell, Crimmings, & Lent, 1984), most of the studies reviewed have focused on beginning counselor-therapists and the learning of basic counseling skills. These studies have been informative but offer little for guiding the individual supervisor about how best to assess counselor competence at different stages of training and in relation to supervisor interventions.The literature suggests that the need for evaluating supervision effectiveness is great but that the incidence is relatively low. Although the American Psychological Association (APA), for example, requires evaluation of psychology training in its approved programs, little systematic assessment of that training occurs (Norcross & Stevenson, 1984). Moreover, it seems that supervisor feedback and ratings are the principal sources of assessment of supervision, with few alternatives considered. Program decision makers (i.e., those responsible for educational interventions, such as supervisors, administrators, and advisers) are confronted with a diversity of measures and conflicting research findings. Yet, their choices of how to evaluate their programs depend on a clear reading of this literature.