Analyzing discursive practices in social science - The CEDITEC symposium at the University Paris XII on 27 April 2007: This symposium was organized around the question of the convergence between discourse analysis and certain currents of qualitative social science. The symposium was divided into two parts: "Ethnography, Field Work, Actor", what happens when social actors express themselves during surveys; and "Lexicometry, Corpus, Announcement", conceming certain analytical, conceptual et technical tools generated by the sciences of language, and, in particular, text analysis software and its use in current sociology.