ONE of the problems in medical education is that of determining the effects of clinical training on the clinical competence of medical students. Clinical competence is considered here as the effectiveness with which students can apply their fund of knowledge to the observation, understanding, and management of patients. In order to conduct scientific investigations of this problem, objective methods of quantifying the degree of clinical competence are required. One approach to the development of such methods is to use a film of a patient examination or interview accompanied by questions designed to determine the student's skill in applying what he knows to the situation depicted in the film. This approach is currently being used for evaluative purposes by the National Board of Medical Examiners.1 In the field of psychiatry, Stoller and Geertsma2,3have developed filmed Psychiatric interviews and an