Duan Rujun, Zhao Wenyuan, Tong Shelley Xiuli, Tong Xiuhong
Department of Psychology, The Education University of Hong Kong, Hong Kong SAR, China.
Human Communication, Development, and Information Sciences, Faculty of Education, The University of Hong Kong, Hong Kong SAR, China.
Dev Cogn Neurosci. 2025 May 29;74:101576. doi: 10.1016/j.dcn.2025.101576.
Combining event-related potential (ERP) with an artificial orthography learning paradigm, this study examined how 7-11-year-old Chinese children from first to fifth grade implicitly acquired orthography-semantics regularities of artificial characters. We manipulated the semantic consistency levels of radicals embedded in artificial characters at high (100 %), moderate (80 %), and low (60 %). The behavioral results indicated that 8-year-olds in the second grade were able to acquire regularities of semantic radicals within a sequence of artificial characters. The ERP results revealed a N170-P300-N400 pattern. The N170 component in the occipitotemporal area indicated orthographic identification during the early stages of learning, while the P300 and N400 components reflected attentional allocation and semantic activation during the later stages of statistical learning of orthography-semantics connections. The interactions between neural activation of statistical learning and grade suggest a significant developmental change in 7-11-year-old children. These findings support the multi-component model of statistical learning and the age-related hypothesis.
本研究将事件相关电位（ERP）与人工正字法学习范式相结合，考察了7至11岁小学一至五年级的中国儿童如何隐性习得人工字符的正字法-语义规则。我们操纵了嵌入在人工字符中的部首的语义一致性水平，分为高（100%）、中（80%）、低（60%）三个水平。行为结果表明，二年级8岁的儿童能够在一系列人工字符中习得语义部首的规则。ERP结果显示出N170-P300-N400模式。枕颞区的N170成分表明在学习早期阶段进行了正字法识别，而P300和N400成分反映了在正字法-语义联系的统计学习后期阶段的注意力分配和语义激活。统计学习的神经激活与年级之间的相互作用表明7至11岁儿童存在显著的发育变化。这些发现支持了统计学习的多成分模型和年龄相关假说。
