Abstract
In order to train healthcare professionals in the announcement of serious medical diagnoses, we propose the de-sign of a section of a website that aims to enable caregivers to better control this professional activity that they dread. These diagnoses materialize through language interactions between doctors and patients that are emotion-ally charged. The analysis of these announcement interviews involves access to interactions that are as close as possible to those that take place in real work situations through role-playing. We will show that the design of the website based on the architectural dimension (functional structure of the activity), the relational dimension (roles, co-constructed communication contract) and the communicational dimension (mobilized language processes) allows to identify this sensitive professional activity in its characteristic aspects. Based on a study commissioned by the Ligue contre le cancer, we will show how and in what way the identified dimensions have formative potential and we will highlight their contribution to improving the understanding of the activity and developing training materi-als.