Goldstein Rutherford, Vitevitch Michael S
Department of Psychology, University of Kansas, Lawrence, KS, United States.
Front Psychol. 2017 Sep 26;8:1683. doi: 10.3389/fpsyg.2017.01683. eCollection 2017.
The present study examined how the network science measure known as closeness centrality (which measures the average distance between a node and all other nodes in the network) influences lexical processing. In the mental lexicon, a word such as CAN has high closeness centrality, because it is close to many other words in the lexicon. Whereas, a word such as CURE has low closeness centrality because it is far from other words in the lexicon. In an auditory lexical decision task (Experiment 1) participants responded more quickly to words with high closeness centrality. In Experiment 2 an auditory lexical decision task was again used, but with a wider range of stimulus characteristics. Although, there was no main effect of closeness centrality in Experiment 2, an interaction between closeness centrality and frequency of occurrence was observed on reaction times. The results are explained in terms of partial activation gradually strengthening over time word-forms that are centrally located in the phonological network.
本研究考察了被称为接近中心性的网络科学度量（该度量衡量网络中一个节点与所有其他节点之间的平均距离）如何影响词汇加工。在心理词典中，像“CAN”这样的词具有较高的接近中心性，因为它在词典中与许多其他词接近。而像“CURE”这样的词具有较低的接近中心性，因为它在词典中与其他词距离较远。在一项听觉词汇判断任务（实验1）中，参与者对具有高接近中心性的词反应更快。在实验2中，再次使用了听觉词汇判断任务，但刺激特征范围更广。虽然在实验2中接近中心性没有主效应，但在反应时间上观察到接近中心性与出现频率之间的交互作用。结果是根据随着时间推移逐渐增强的部分激活来解释的，这种激活作用于语音网络中处于中心位置的词形。
