Keywords: socialization, participation, identity, community of practices
The study here presented aims at analyzing professional socialization process according to the cultural and dialogical perspective. It is analysed of how a newcomer participate and learn in a community of practices highly specialized. The newcomer's progressive participation trajectory was analysed by observing his non verbal and verbal behaviours in two different times. The method used is quali-quantitative. Non verbal behaviour is analysing through observational grids. Frequencies of conversational turns are calculated and repairs are especially analysed. Results show a progressive and yet irregular and floating socialization process, during which peripheral and central participation coexist, according to interactive situations and the development of an expert professional identity. This result eriches and specifies what already known about participation trajectories of newcomers to highly specialized professional communities.