The thesis contributes to facilitate an understanding of the relation that can be established between a specific experience of culture and a relationship to culture, in the specific case of the museum visit. The notion of adjustment is proposed in order to account for this relation and points to a system of interaction during which the social agent is engaged in an embodied relationship with a dispositif (or apparatus) of communication and interprets the situation by using representations of this situation and of his role as a visitor. Thanks to a detour via the theories of ethnomethodology, of the social representations and of the mediated interactions, the first part shows how the methodological framework of the thesis has been built in order to apprehend the practice of the visitor as it is being deployed. Two case studies have been chosen for this analysis, a temporary exhibition in the galleries of the museum le Louvre, which engages a situation formulated as an experience of a visit; and a pedagogical game on mobile phone, set in the galleries of the museum arts et metiers, which disturbs this previous assumption. The second part then presents an analysis that puts into dialogue the study of the configuration of situations of communication through the dispositifs at play in each of these situations, and the dynamic of their redefinition by the visitors, through a progressive adjustment. The example of the text since it is considered to be a means of mediation with objects and with knowledge, reveals how the visitor adapts to situation that anticipate a double usage (reading and visiting), with a tension between the characterisation of his gesture and of his reading postures, the retextualisation of the propositions and the permanent reformulation of the general project of the visit. The third part consists in looking at how the visitor defines the situation that he is going through, not only from his experience of reading, but also from his general understanding of his visit. We then observe that the visitors profoundly live a situation of mediated interaction, which means that they simultaneously postulate a form of dialogue with a conceptor that “speak” to them and constantly identify the expographic gesture that consists in staging a space. This situation is experienced through a game of strong attention to the semiotic characteristics of the exhibition and through a willing suspension of disbelief. Finally, the analysis has allowed to bring to light three characteristic forms of adjustment: (1) The mobilisation and construction of figures of paths and figures of visitors which mediate the relationship between the agent and his own practice and which allow him to judge the situation of communication that he is going through. (2) The fulfilment of a role that is being elaborated from the necessity to find a relevant framework of interpretation for the activity. (3) And finally, the game between the description of the activity and the general framework of interpretation that allows the visitor to construct a broader relationship to culture.
