Dupoux Emmanuel, Kouider Sid, Mehler Jacques
Laboratoire de Sciences Cognitives et Psycholinguistique, Ecole des Hautes Etudes en Sciences Sociales, and Centre National de la Recherche Scientifique, Paris, France.
J Exp Psychol Hum Percept Perform. 2003 Feb;29(1):172-84. doi: 10.1037//0096-1523.29.1.172.
The authors used lexical decision in a dichotic listening situation and measured identity priming across channels to explore whether unattended stimuli can be processed lexically. In 6 experiments, temporal synchronization of prime and target words was manipulated, and acoustic saliency of the unattended prime was varied by embedding it in a carrier sentence or in babble speech. When the prime was acoustically salient, a cross-channel priming effect emerged, and participants were aware of the prime. When the prime was less salient, no identity priming was found, and participants failed to notice the prime. Saliency was manipulated in ways that did not degrade the prime. Results are inconsistent with models of late filtering, which predict equal priming irrespective of prime saliency.
作者在双耳分听情境中使用词汇判断任务，并测量跨通道的身份启动效应，以探究未被注意的刺激是否能够在词汇层面得到加工。在6个实验中，启动词和目标词的时间同步性被加以操控，未被注意的启动词的声学显著性则通过将其嵌入载体句或嘈杂语音中而发生变化。当启动词在声学上显著时，会出现跨通道启动效应，并且参与者能意识到启动词。当启动词显著性较低时，则未发现身份启动效应，且参与者未注意到启动词。显著性的操控方式并未降低启动词的质量。研究结果与晚期过滤模型不一致，后者预测无论启动词显著性如何，启动效应均相同。
