This applied seminar builds on the introduction to research methods in anthropology and sociology that students have to attend during the first semester. The pedagogical approach is based on the assumption that anthropology and sociology are not meant to discover a pre-existing reality but construct their object in a reflexive movement. Participants will be asked to conduct a small ethnographic fieldwork in Geneva punctuated by concrete exercises (writing the field report, observation and interview notes, coding). In relation to the topic selected, they will be encouraged to contact a variety of actors, including institutions (local associations, municipality and canton's offices, international or non government organisations, etc.). A particular attention will be given to the way researchers negotiate their presence with their interlocutors and how this negotiation influences the empirical material they collect. The seminar will favour discussions where participants share their experience.