A method of organization of self-instructional units into tiers corresponding to different levels of advancement is described. This arrangement offers greatly increased flexibility in course design, determination of rate and depth of study by both student and teacher, and a resource for continuing education. (Editor)

A group of first-year medical students who demonstrated inadequate interviewing skills in a test with proven reliability and validity were identified. The usefulness of individualized tutorials as a means of helping them improve their skills was assessed. (Author/MLW)