基于干预反应范式的儿童数感行为及认知神经机制研究

项目名称： 基于干预反应范式的儿童数感行为及认知神经机制研究

项目编号： No.31260239

项目类型： 地区科学基金项目

立项/批准年度： 2013

项目学科： 医药、卫生

项目作者： 张丽锦

作者单位： 宁夏大学

项目金额： 60万元

中文摘要： 数感在童年早期即可反映儿童的数学能力，并对数学困难有显著的预测作用。本项目拟采用干预反应范式（RTI）的追踪研究策略，结合生长曲线建模（GCM）、事件相关电位（ERPs）等手段，探查4~9、10岁不同数感发展水平儿童的数感发展特征、影响因素及认知神经机制。首先，以《儿童数感发展测验》考查儿童数感发展状况、数感不良程度以及人口学变量在其中的影响。在此基础上，建立一套适于进行多级干预的不同强度的干预方案，并形成数感研究的干预反应范式，以对数感发展过程进行追踪研究。根据追踪研究所获得的多个测量点的数据构建数感发展的生长曲线模型，分析其截距、斜率和曲线特征等指标，探查儿童数感发展的潜在制约机制。最后，借助具有高时间分辨率的事件相关电位技术，对干预前后数感不良儿童的脑电变化，对不同年龄、不同数感发展水平儿童在数感任务上的脑电差异进行对比分析，从多个角度探查不同群体儿童在各个数感成分上的神经加工机制。

中文关键词： 儿童；数感；数学学习困难；干预反应范式；事件相关电位

英文摘要： Number sense is a good indicator of early arithmetic achievement and a strong predictor of later mathematics grades and learning disabilities. The purpose of this project is to investigate development and correlates of number sense from age 4 to age 10, as well as the cognitive-neural mechanism that is likely involved in this development. The project will use a longitudinal response to intervention (RTI) design and collect both behavioral and neurological data (i.e., ERPs). The data will be analyzed using advanced statistical techniques such as growth curve modeling. Firstly, Number Sense Developmental Test will be administrated to investigate general development, prevalence of deficiency and demographical factors' impact on children's number sense. Based on this, the current study will adapting and developing a RTI that involves multi-tiered intervention and uses Calculation Fluency in assessment, a better benchmark than math grades for evaluating young children's mathematical abilities. The assessment and intervention developed in prior Western studies might not apply to Chinese children due to the significant cultural differences in math education. Drawing from the literature, the current study will fill this gap by developing RTI matching Chinese children's number sense level. With the follow up dat

英文关键词： Children；Number Sense；Mathematical Learning Difficulties；Response to Intervention；Event Related Potential