Lam Tuan Q, Watson Duane G
Department of Psychology, University of Illinois at Urbana-Champaign.
J Exp Psychol Learn Mem Cogn. 2014 May;40(3):829-43. doi: 10.1037/a0035780. Epub 2014 Feb 17.
Compared to words that are new to a discourse, repeated words are produced with reduced acoustic prominence. Although these effects are often attributed to priming in the production system, the locus of the effect within the production system remains unresolved because, in natural speech, repetition often involves repetition of referents and lexical items simultaneously. Therefore, repetition reduction could be due to repeated mention of a referent or to repetition of a word or referring expression. In our study, we use an event description task to test whether repetition reduction is due to repetition of lexical items or to repeated mention of referents. The results show that repeated lexical items lead to reduced duration and intensity even in the absence of referent repetition, whereas repeated referents lead to reduced intensity alone. The general pattern suggests that repetition reduction is due most strongly to repetition of the lexical item, rather than repeated mention of the referent.
与语篇中首次出现的词汇相比，重复出现的词汇在声学上的突出程度会降低。尽管这些效应通常被归因于生成系统中的启动效应，但由于在自然言语中，重复往往同时涉及所指对象和词汇项的重复，所以该效应在生成系统中的作用位点仍未明确。因此，重复突显度降低可能是由于对所指对象的重复提及，也可能是由于词汇或指代表达的重复。在我们的研究中，我们使用事件描述任务来测试重复突显度降低是由于词汇项的重复还是所指对象的重复提及。结果表明，即使在所指对象没有重复的情况下，重复的词汇项也会导致时长和强度降低，而重复的所指对象只会导致强度降低。总体模式表明，重复突显度降低最主要是由于词汇项的重复，而非所指对象的重复提及。
