This paper is a short presentation of a conference given at the Complacq Workshop (Paris V University, July, 2010) about the Corpus annotation in what we call Interlocutive Speech Analysis (ISA). First we expose some methodological prospects of this approach, and afterwards we suggest a Corpora processing for the study of the Interlocution. Finally, we enumerate several indicators that we briefly apply to a pedagogical dialogue to exemplify their relevance.