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<Paper uid="C88-1044">
  <Title>On the Generation and Interpretation of Demonstrative Expressions*</Title>
  <Section position="8" start_page="2117" end_page="2117" type="concl">
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    <Paragraph position="0"> paradigm nns~essed pronouns are viewed as preferring an existing bacl~wards-lookhlg center as antecedent. We have suggested that use of a demonstrative expression or stressed pronoun signals that the option to shift the backwards-looking center has been selected over the otherwise-preferred option of continuing an existing backwards-looking center. Brennan, Friedman and Pollard (1987), in fact, mention in passing that stressed pronouns in oral discourse could be used to unambiguously signal one such type of cer~ter shift. (cf. Sgall (1984), who remarks that demonstratives c~Jn be used to unambiguously specify reference to the linguistic fi ~cus of the irmnediately preceding sentence.) Genre differences. A final application of our constraints is in the atea of discourse genre variation. We have shown that both the form and function of demonstrative expressions varies between diffi;rent spoken and written discourse genres. Our final suggestion is that these and other genre differences should be further explored, so that it will eventually be possible to design maximally-efficient discourse-processing algorithms which differentially e, xploit such genre distinctions.</Paragraph>
  </Section>
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