中文摘要：

汉语是一种声调语言，在口语韵律表达中存在独特的特点。本项目利用汉语不同于非声调语言的特点，探讨已有研究中尚未澄清的问题，即汉语声调在早期自动加工中对语义激活的作用，以及在不同认知阶段中，汉语声调和语调加工的神经机制。这些问题是当前的研究热点，但仍存在着各种分歧和激烈的争论。本项目拟采用ERP方法，结合LORETA源定位技术，通过不同的实验范式考察以下内容：（1）在早期自动加工过程中，汉语声调对词汇语义激活的作用；（2）在早期阶段，汉语声调和语调加工的大脑激活模式；（3）在晚期阶段，汉语声调和语调加工的大脑激活模式。对这些问题的考察将有助于澄清当前的激烈争论，拓展以往基于非声调语言研究建立的口语加工理论的适用范围，为完善言语认知加工的理论模型提供新的实验证据。

英文摘要：

With the dramatic social changes in recent China, changes of people＇s trust may take place as well. The present study conducted a cross-temporal recta-analysis of 53 papers adopting Rotter＇s Interpersonal Trust Scale （ITS） to investigate Chinese college students＇ trust. The 53 papers involved 24233 college students and the data collection time ranged from 1998 to 2009. Results showed that： （1） Chinese college students＇ interpersonal trust was decreasing in the past 11 years, and compared to the year of 1998, it dropped 1.19 standard deviations in 2009; （2） Interpersonal trust declined significantly for both the male and the female, whereas, trust scores had no significant gender difference; （3） Interpersonal trust of students from rural area declined significantly, whereas trust of students from urban area held constant, moreover, no difference of trust scores was observed between rural and urban students.