From a review of empirical studies of supervisory behavior recorded over a 20-year period, a scheme was formulated for classifying supervision as a form of interpersonal behavior, according to five dimensions: Source, viewpoint, object, mode, and task. Tabulated summaries indicate literature sources utilized and increments of new items of information in each of 100 studies. Considerable redundancy was found among the studies and many findings, on second analysis, proved to be normative listings about amorphous role incumbents, rather than descriptions of actual behavior. (JK)