coherence structure and lexical cohesion in expository and persuasive texts

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Coherence structure and lexical cohesion in expository and persuasive texts. Constraints in Discourse III 30 July – 1 August 2008 Ildikó Berzlánovich, Markus Egg, Gisela Redeker University of Groningen Center for Language and Cognition. The MTO Project. - PowerPoint PPT Presentation

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  • Coherence structure and lexical cohesion in expository and persuasive textsConstraints in Discourse III30 July 1 August 2008

    Ildik Berzlnovich, Markus Egg, Gisela RedekerUniversity of GroningenCenter for Language and Cognition

  • Modelling Textual Organisation (MTO)financed by a grant from NWOproject leaders: Markus EggGisela Redeker

    http://www.let.rug.nl/mto/The MTO Project

  • Lexical cohesion is more closely aligned with coherence in thematically organised texts than in intentionally organised texts.

    Specifically:close alignment in expository textsless or no alignment in persuasive textsAlignment hypothesis

  • Discourse organisationCorpusMethod (genre, coherence, cohesion)Results (coherence, cohesion, alignment)ConclusionFuture work Outline

  • GENRE 1 GENRE 2 COHERENCE COHERENCE COHESION COHESION text 1 text 1 COHERENCE COHERENCE COHESION COHESION text 2 text 2 Discourse organisation ResultsCorpus ConclusionMethod (genre, coherence, cohesion) Future work

  • GENRE 1 GENRE 2 COHERENCE COHERENCE COHESION COHESION text 1 text 1 COHERENCE COHERENCE COHESION COHESION text 2 text 2 Discourse organisation ResultsCorpus ConclusionMethod (genre, coherence, cohesion) Future work

  • GENRE 1 GENRE 2 COHERENCE COHERENCE COHESION COHESION text 1 text 1 COHERENCE COHERENCE COHESION COHESION text 2 text 2 Discourse organisation ResultsCorpus ConclusionMethod (genre, coherence, cohesion) Future work

  • GENRE 1 GENRE 2 COHERENCE COHERENCE COHESION COHESION text 1 text 1 COHERENCE COHERENCE COHESION COHESION text 2 text 2 Discourse organisation ResultsCorpus ConclusionMethod (genre, coherence, cohesion) Future work

  • Genreclass of communicative events with common communicative purposes shared in a discourse community (Swales 1990)global schematic structure moves

    Coherenceunderlying relations between propositions in text

    Cohesionsemantic relations between surface elements in textDiscourse organisation ResultsCorpus ConclusionMethod (genre, coherence, cohesion) Future work

  • Corpus in the MTO projectexpository texts- encyclopedia entries- short news storiespersuasive texts- fundraising letters - advertisementsmixed genres- news analyses, commentaries, editorials (?)- reviewsDiscourse organisation ResultsCorpus ConclusionMethod (genre, coherence, cohesion) Future work

  • Texts for pilot studyexpository texts: encyclopedia entries (EE01, EE02)persuasive texts: fundraising letters (FL01, FL02)

    Discourse organisation ResultsCorpus ConclusionMethod (genre, coherence, cohesion) Future work

  • Encyclopedia entriesname the objectdefine the objectdescribe in general (e.g., size, age, category)describe details (e.g., surface, past/future development, discovery)

    Fundraising letters - seven moves (Upton 2002)get attentionintroduce the cause and/or establish credentials of organisationsolicit responseoffer incentivereference insertexpress gratitudeconclude with pleasantriesDiscourse organisation ResultsCorpus ConclusionMethod (genre, coherence, cohesion) Future work

  • Fragment from EE01 (De Zon)Na vorming van de zon en het zonnestelsel is onze ster begonnen aan een lang bestaan als zogenaamde dwergster. In de dwergfase van het leven van de zon wordt de energie die ze uitstraalt in het centrum geproduceerd door fusie van waterstof tot helium. De zon is nu ongeveer vijf miljard jaar oud en heeft nog brandstof voor nog eens vijf miljard jaar.

    After the forming of the sun and the solar system, our star began its long existence as a so-called dwarf star. In the dwarf phase of its life, the energy that the sun gives off is generated in its core through the fusion of hydrogen into helium. The sun is about five billion years old now and it still has enough fuel for another five billion years.Discourse organisation ResultsCorpus ConclusionMethod (genre, coherence, cohesion) Future work

  • Rhetorical Structure Theory (Mann & Thompson 1988)functional relations between propositionsreconstruction of writers purposessubject-matter vs. presentational relationsmononuclear relations multinuclear relations

    Discourse organisation ResultsCorpus ConclusionMethod (genre, coherence, cohesion) Future work

  • hierarchy

    Discourse organisation ResultsCorpus

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