A computer-assisted simulation of the "chart method" of teaching has been developed and was used to provide instruction in clinical decision-making in the diagnosis and treatment of pulmonary diseases. The course requires a student to reach and defend a diagnosis and to provide appropriate treatment for each of 10 simulated cases. Evaluation of performance and immediate feedback and correction of errors of commission and omission are an integral part of the course. The course provides a model for development of additional programs in other subject areas. (Author)