中文摘要：

采用听觉呈现条件下的词汇判断任务和ERP技术探讨了汉语双字词获得年龄效应。结果发现：1）在行为数据上，同晚获得词相比，早获得词的反应时更短且错误率更低。2）在ERP数据上，早获得词和晚获得词所诱发的LPC（800ms-1000ms）的平均波幅存在显著差异，同晚获得词相比，早获得词所诱发的LPC波幅更大，且这种差异主要是在中央顶区，说明获得年龄是影响汉语双字词识别的一个重要因素，获得年龄效应出现在认知加工进程的后期。

英文摘要：

An experiment was conducted to explore Age of acquisition effect with two Chinese character words using ERP technique and lexical decision task presenting by auditory. Results showed that： the early - acquired words have a relatively shorter reaction time and a lower error rate comparing with the late - acquired words. The LPC （ 800 - 1000ms） component elicited by the early - acquired words had a more positive ERP deflection than that of the late - acquired words and the difference mainly consisted in the central parie- tal region. The result indicates that Age of acquisition effect is an important influence factor Of the Identification of two Chinese character words, Age of acquisition effect might influence the course of lexieal processing in the late stage.