Influence des communications multimodales sur le common ground. Proposition d’une méthodologie d’analyse.

The aim of this study is to present a method for analysing multimodal communication in connection with the process of common ground construction, which is an indispensable shared knowledge for effective communication and collaboration. This methodology is used to describe qualitatively and quantitatively the role of verbal, visual, gestural and graphic modalities in this collaborative process. Our goal is to better understand how these modalities support the process, whether used alone or in synergy. The originality of this method is to consider the four modalities in an integrated and contextual way and also by respecting the temporal dynamics of their relations.