[PROPOSAL OF AN OBSERVATION GRID TO DECRYPT CAPABILITIES. AN ILLUSTRATION IN AN ORGANIZATION FOR ALZHEIMER'S PATIENTS].

The capability approach (Sen, 2000) is a relevant theoretical choice to be interested in the lives of people with disabilities and/or loss of independence. However, this promising approach to social problems remain shaded by methodological problems. Thus, although its founder emphasizes the need to understand the meaning that the actors give their lives and their choices in the environment that is theirs, there is clearly rooted in a positivist approach, objectivist, quantitatively. This article's objective is to present a methodology for observation grid to overcome this pitfall. Its deployment allows us to understand the relationship of the individual to others, space, time and objects in a social situation. For illustration, we build a grid to a social situation "lunch" in a space welcoming people with Alzheimer's disease.