Most theories of reference assume that a referent's saliency in the linguistic context determines the choice of referring expression. However, it is less clear whether cognitive factors relating to the nonlinguistic context also have an effect. We investigated whether visual context influences the choice of a pronoun over a repeated noun phrase when speakers refer back to a referent in a preceding sentence. In Experiment 1, linguistic mention as well as visual presence of a competitor with the same gender as the referent resulted in fewer pronouns for the referent, suggesting that both linguistic and visual context determined the choice of referring expression. Experiment 2 showed that even when the competitor had a different gender from the referent, its visual presence reduced pronoun use, indicating that visual context plays a role even if the use of a pronoun is unambiguous. Thus, both linguistic and nonlinguistic information affect the choice of referring expression.
We report two experiments that investigated the widely held assumption that speakers use the addressee's discourse model when choosing referring expressions (e.g., Ariel, 1990;Chafe, 1994;Givón, 1983;Prince, 1985), by manipulating whether the addressee could hear the immediately preceding linguistic context. Experiment 1 showed that speakers increased pronoun use (and decreased noun phrase use) when the referent was mentioned in the immediately preceding sentence compared to when it was not, even though the addressee did not hear the preceding sentence, indicating that speakers used their own, privileged discourse model when choosing referring expressions. The same pattern of results was found in Experiment 2. Speakers produced more pronouns when the immediately preceding sentence mentioned the referent than when it mentioned a referential competitor, regardless of whether the sentence was shared with their addressee. Thus, we conclude that choice of referring expression is determined by the referent's accessibility in the speaker's own discourse model rather than the addressee's.
We contrasted two hypotheses concerning how speakers determine adjective order during referential communication. The discriminatory efficiency hypotheses claims that speakers place the most discriminating adjective early to facilitate referent identification. By contrast, the availability-based ordering hypothesis assumes that speakers produce most available adjectives early to ease production. Experiment 1 showed that speakers use more pattern-before-color modifier orders (than the reversed) when pattern, not color, distinguished the referent from alternatives, providing support for the discriminatory efficiency hypothesis. Participants also overspecified color more often than pattern, and they generally favored color-before-pattern orders, in support of the availability-based ordering hypothesis. Experiments 2 and 3 replicated both effects in a dialogue setting, where speakers' adjective ordering was also primed by their partner's ordering, using conjoined and nonconjoined constructions. We propose a novel model (PASS) that explains how discriminability and availability simultaneously influence adjective selection and ordering via competition in the speaker's message representation.
This study examined word order preferences as a function of phrasal length in Basque. Basque is an OV-language with flexible sentence word order and rich verb agreement. Contrary to the universal short-before-long preference predicted by availability models, Hawkins has argued that short-before-long orders are preferred in VO-languages such as English, whereas long-beforeshort orders are preferred in OV-languages such as Japanese (Hawkins, 2004). However, it is unclear how length affects word order preferences when an OV-language has rich verb agreement and allows postverbal arguments. We found a general long-before-short preference, and a tendency to place the verb in a sentence-medial position when one constituent is long. We argue that since agreement morphology signals the thematic role and case of surrounding phrases, it contributes to speeding up sentence processing. We conclude that morphologically rich languages employ both general adjacency mechanisms and language-specific resources to enhance language efficiency.
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