In addition to providing psychiatric care to patients with somatic diseases, liaison psychiatry plays an important role in the teaching of the relational aspects of the clinical encounter between patients and clinicians. This series of three articles proposes a critical reflection on this topic, and presents examples of undergraduate and postgraduate teaching programs developed by the psychiatric liaison service at Lausanne University Hospital. This article describes the general context of undergraduate teaching, and focuses on our training with simulated patient of a breaking bad news situation, taking place during the fourth year of medical studies. Individual supervision, provided for each student, is discussed as a relatively unique opportunity within the curriculum of medical school.