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  • Title: Discourse in aphasia: integration deficits in processing reference.
    Author: Chapman SB, Ulatowska HK.
    Journal: Brain Lang; 1989 May; 36(4):651-68. PubMed ID: 2720374.
    Abstract:
    The present study investigated moderately impaired aphasic subjects' ability to integrate information across sentences by having them identify antecedents for ambiguous pronouns in brief narratives. In order to disambiguate the pronouns, the subjects had to consult either textual cues and/or extratextual cues. In addition, the subjects' ability to retrieve factual information was measured by having them identify explicitly stated noun referents. The results show that the aphasic subjects had significant difficulty using textual cues to resolve referents when the referents were not readily accessible through world knowledge. The patients had little difficulty interpreting referents which were recoverable from world knowledge or were stated explicitly. The explanatory power of world knowledge effects, grammatical class effects, memory effects, and linguistic integration effects in accounting for the deficit pattern observed is considered.
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