Differences in programs and organization (2,3), in the military service (4) or enrolled in a single course over time ( 5 , 6). Evaluation methods based upon behavioral change, for example, seem better suited for traditional situations, given interest, time and funds. Unfortunately, for several reasons, the same traditional approaches to evaluation are seldom feasible for continuing education programs and pose special problems for continuing education in the health professions.First, in continuing education, the learners are professionals, who voluntarily attend sessions that are variable in length. Secondly, most continuing education programs can be classified as temporary systems in the sense that they are brief and are not usually repeated in the same way by the same instructional staff (7). Indeed, the content of continuing education in the health professions changes rapidly as new techniques and discoveries are made. Similarly, the learners vary in background, professional setting and, even within