| Sumario: | In this article, we present an ongoing investigation focused on the lexical plane of academic discourse in university education; specifically, we are interested in analyzing the lexical dimension in the texts written by graduates of professional careers at the time they enter postgraduate studies. Theoretically, we articulate aspects of studies on lexical availability - which seek to discover what lexies a speaker would be able to use in certain communication issues and centers of interest - with socio-rhetorical studies on academic discursive genres and disciplinary communities. The corpus for this article is made up of the argumentative texts. In this first advance, we will present the analysis indicators defined for the delimitation of the «academic lexicon» and that constitute the work route to be followed: measurement of lexical wealth; similarity analysis, terminology analysis with word clouds; Reinert or lexical world analysis; factorial analysis of correspondences; lexical modeling analysis; analysis of lexical relationships and textual articulation. In addition, we will present initial results achieved with the metric lexicon tools provided by the software Iramuteq 0.7 alpha 2.
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