The time-course of talker-specificity and lexical competition effects during word learning
The time-course of talker-specificity and lexical competition effects during word learning
复制标题
DOI：
10.1080/23273798.2014.916409
复制
发表时间：
2014-01-01
影响因子：
2.3
通讯作者：
Gaskell, M. Gareth
中科院分区：
文献类型：
--
作者：
Brown, Helen;Gaskell, M. Gareth
三个实验考察了口语词汇学习中说话者特异性和词汇竞争效应的时程。说话人特异性效应依赖于获得高度详细的词汇表征，而词汇竞争可能会利用更抽象的表征。通过同时跟踪这些效应的时间过程，我们研究了它们的储存和保留是否有一个共同的机制。说话者特异性对识别新单词的影响在研究后立即表现出强大的影响，并且在一周内基本稳定。相比之下，词汇竞争效应只出现在延迟测试点。这种时程分离支持词汇加工的双系统模型，其中新单词的情景表征迅速产生，但词汇竞争背后的强大表征只有在一段时间的离线巩固后才出现。
Three experiments examined the time-course of talker-specificity and lexical competition effects during spoken word learning. Talker-specificity effects depend on access to highly detailed lexical representations, whilst lexical competition may exploit more abstract representations. By tracking the time-courses of these effects concurrently we examined whether there was a common mechanism underlying their storage and retention. Talker-specificity effects on recognition of novel words were robust immediately after study and were generally stable over the course of a week. In contrast, lexical competition effects emerged only at delayed test points. This time-course dissociation supports a dual-system model of lexical processing in which episodic representations of new words are generated rapidly, but robust representations underlying lexical competition emerge only after a period of offline consolidation.