快速与正常阅读条件下文章标记对高中生阅读信息保持的影响

探讨正常与快速阅读条件下文章宏观标记对文章主题通达和文章信息保持的影响。实验以高中二年级学生为被试。结果表明,在文章主题通达上,有文章宏观标记时,正常阅读与快速阅读之间无显著差异;无文章宏观标记时,正常阅读显著优于快速阅读;在文章信息的保持量上,文章宏观标记对正常阅读和快速阅读都有显著的促进作用。据此,我们可以初步得出快速阅读过程是读者利用文章结构信息建构文章结构表征并进行结构搜索加工的过程的结论。     

Neural Mechanisms in Dyslexia

ABSTRACT— Within the last two decades, evidence from many laboratories has converged to indicate the cognitive basis for dyslexia: Dyslexia is a disorder within the language system and, more specifically, within a particular subcomponent of that system, phonological processing. Converging evidence from a number of laboratories using functional brain imaging indicates that there is a disruption of left-hemisphere posterior neural systems in child and adult dyslexic readers when they perform reading tasks. The discovery of a disruption in the neural systems serving reading has significant implications for the acceptance of dyslexia as a valid disorder—a necessary condition for its identification and treatment. Brain-imaging findings provide, for the first time, convincing, irrefutable evidence that what has been considered a hidden disability is "real," and these findings have practical implications for the provision of accommodations, a critical component of management for older children and young adults attending postsecondary and graduate programs. The utilization of advances in neuroscience to inform educational policy and practices provides an exciting example of translational science being used for the public good.     

“热”执行对注意缺陷多动障碍和阅读障碍儿童言语工作记忆的影响

ADHD儿童在与背外侧前额叶(DLPFC)相关的"冷"执行功能上的缺陷已大量证实,但在与眼眶和中前额叶皮层(OMPFC)相关的"热"执行功能上,ADHD儿童是否存在缺陷则未可知。与儿童赌博任务实验范式(该任务中"热"启动对"冷"执行起到抑制作用)不同,本研究考察趣味言语N-back任务是否对ADHD和阅读障碍儿童的成绩有促进作用。枯燥N-back任务考察的是言语工作记忆的纯认知特征,而趣味任务则卷入了"热"执行对"冷"执行的影响。结果表明,在枯燥任务上,ADHD和阅读障碍儿童的成绩均明显低于正常儿童,二者之间差异不显著,在趣味任务成绩上,ADHD儿童与正常儿童的成绩没有显著差异,而阅读障碍儿童成绩落后于正常控制组和ADHD组,在成绩变化的趋势上,ADHD儿童在趣味任务上成绩明显提高,而阅读障碍儿童则无明显改善。结果说明ADHD和阅读障碍儿童的言语工作记忆均存在明显的缺陷,但是机制不同,"热"执行对提高ADHD的言语工作记忆有明显的促进作用,ADHD的"冷"执行缺陷能够通过"热"执行的调节得到改善。     

英文阅读材料的颜色对阅读成绩的影响

该文通过档案调查、实验和问卷调查的方法就大学英语六级考试中不同颜色文字对阅读成绩的影响进行了探索。在对北京大学和北京师范大学的2007年12月的5537份六级考试成绩档案的调查过程中,发现不同颜色试卷的阅读部分和总分成绩差异显著(蓝色低于黑色),但是这种差异并不大;选取26名被试进行实验的结果发现,题目难度和颜色之间存在边缘显著的交互作用,简单题目上蓝色比黑色成绩更低,但是这种差异在复杂题目上没有那么明显。进一步地,通过131份问卷调查数据得出,被试的阅读习惯为黑色,主观偏好也为黑色:这也是影响阅读成绩的主要因素。     

Vertical perceptual span and the processing of visual signals in reading

A previous study by Pollatsek et al. ( 1993 ) claims that the perceptual span in reading is restricted to the fixated line, i.e. readers typically focus their visual attention on the line of text being read. The present study investigated whether readers make use of content structure signals (paragraph indentations and topic headings) present several lines away from the currently fixated line. We reasoned that as these signals are low-resolution visual objects (as opposed to letter and word identity), readers may attend to them even if they are located some distance away from the fixated line. Participants read a hierarchically organized multi-topic expository text containing structure signals in either a normal condition or a window condition, where the text disappeared above and below a vertical 3° gaze-contingent region. After reading, participants were asked to produce a written recall of the text. The results showed that the overall reading rate was not affected by the window. Nevertheless, the headings were reread more in the normal condition than in the window one. In addition, more topics were recalled in the normal than in the window condition. We interpret the results as indicating that the readers visually attend to useful text layout features while considering bigger units than single text lines. The perception of topic headings located away from the fixated line may favour long-range regressions towards them, which in turn may favour text comprehension. This claim is consistent with previous studies that showed that look-back fixations to headings are performed with an integrative intent.     

发展性阅读障碍与小脑异常：小脑的功能和两者的因果关系

发展性阅读障碍(下文简称为"阅读障碍")不仅会影响个人的终身发展,还会对社会造成沉重的经济负担,深入探讨相关的神经机制,对实现阅读障碍的早期预测和干预十分重要。以往关于阅读障碍神经机制的模型多集中于大脑,近些年的研究发现,阅读障碍也与小脑异常有关,但到目前为止我们仍不清楚两者的关系。通过总结最新的研究进展,我们发现小脑在阅读障碍中可能发挥着多种功能,且小脑异常与阅读障碍可能互为因果。在此基础之上,我们提出了"阅读中小脑与大脑的功能映射假说",旨在从一个全新的角度揭示小脑与阅读的关系,以及两者与大脑的关系。相关内容对全面揭示阅读障碍的神经机制,以及小脑在高级认知加工中的作用,具有重要的启示意义。     

文本阅读中文本表征的意识性研究

文本表征的意识性是文本阅读研究领域的一个新的热点问题,该问题研究的理论基础来自于多年以前研究者就提出的再认双加工模型,该问题研究的主要范式有记得-知道范式、独立记得-知道范式和加工分离范式,三者各有自己的特点,在很多研究中经常结合使用。当前,研究者使用最新的研究范式对文本阅读中文本表征的意识性进行了初步研究,已经初步得出了一些重要结论,但当前研究中仍存在一些问题,需研究者在未来的研究中加以关注。