Attention, intentions, and the structure of discourse
Computational Linguistics
Centering: a framework for modeling the local coherence of discourse
Computational Linguistics
COLING '10 Proceedings of the 23rd International Conference on Computational Linguistics
Discourse structure and language technology
Natural Language Engineering
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In a questionnaire study the effects of discourse structural information on resolving inter-sentential anaphora were investigated. The Right Frontier Constraint, first proposed by Polanyi (1988), states that potential antecedents of an anaphor that are placed at the right frontier of a discourse unit can be accessed more easily than antecedents that are placed somewhere else. Participants (N=36) received written experimental passages of six lines each that contained a pronominal anaphor in the last line and two potential antecedents in the preceding text, one introduced in the first, one in the fourth line of a passage. Antecedents' relative position to the right frontier was manipulated through the discourse relation between the first and the second antecedent and through the filler information interposed between the second antecedent and the anaphor. The two potential antecedents either had the same or different grammatical gender. In the latter case only the first antecedent was gender congruent to the anaphor. Participants' task was to name the anaphor's antecedent. Results show that in case of unequal gender antecedents, participants almost always chose the gender congruent first antecedent, irrespective of its position relative to the Right Frontier. In case of equal gender antecedents choice patterns point to an influence of an antecedent's position relative to the Right Frontier. Alternative theoretical approaches such as centering theory or situational models cannot account for the found results. The findings in the same gender antecedent condition are therefore interpreted as an effect of the Right Frontier Constraint.