汉、英工作记忆的加工和储存对中学生英语阅读理解的影响

本研究采用"视空间和言语交替"任务范式分离言语工作记忆的加工和储存两个成分,分别探讨了英语工作记忆的加工和储存成分对我国中学生英语阅读理解的作用及其途径,以及汉语工作记忆的加工和储存成分对中学生英语阅读理解是否具有跨语言影响。98名初中二年级学生完成了一般认知能力、英语阅读理解、汉语和英语工作记忆任务。结果表明:(1)英语工作记忆的加工和储存成分对英语阅读理解均有显著的独立预测作用;(2)英语工作记忆的储存成分对英语阅读理解的作用部分是由加工成分引起的;(3)汉语工作记忆的加工成分对英语阅读理解没有显著的直接预测作用,但却以英语工作记忆的加工成分为中介间接作用于英语阅读理解;汉语工作记忆的储存成分对英语阅读理解没有显著的预测作用。可见,言语工作记忆是一个多成分系统,加工和储存两个成分是相对分离的,并且它们具有不同的跨语言特性,加工存在跨语言一般性,而储存则具有语言特异性。     

小学生字词识别与语言技能、工作记忆关系研究

本研究采用注音任务、语言任务、再认方法探讨了小学生字词识别与语言技能、工作记忆的关系和影响小学生字词识别的因素。发现：(1)字词识别与语言技能、工作记忆在2、4年级相关均显著;6年级学生字词识别与语言技能的形旁及工作记忆相关不显著,但与语言技能其它维度相关显著(2)预测小学生字词识别发展的主要因素随年级升高而变化。预测2年级学生字词识别的重要指标是语音的音节、字形的形旁与工作记忆;4年级是语音的音节、字形的声旁、句法与工作记忆;6年级是语音的声韵、字形的声旁与语义。     

小学生工作记忆与推理关系的实验研究

本实验以视觉同时呈现,在形近、音近、义近三种干扰下以再认方法和瑞文渐进推理测验探讨了小学生年级、性别、工作记忆与推理的关系。发现(I)小学生工作记忆与推理能力相关显著。(2)工作记忆和推理能力在小学阶段不存在性别差异。(3)年级和工作记忆是影响小学生推理能力的重要因素,但年级因素对推理能力的作用较工作记忆大。     

工作记忆对时间加工的影响

非时间信息加工与时间加工的关系是复杂的, 存在双向干扰或单向干扰, 结果的不一致与任务所需的注意资源及工作记忆都有关。工作记忆的中央执行系统在时间加工中起主要作用, 同时进行的非时间任务对中央执行功能的需求越多, 两种任务之间的干扰程度越大。语言环和视空间模板对时间加工的影响与非时间信息的类型有关。工作记忆作为一个整体以工作记忆容量为指标, 计时成绩也表现出与工作记忆容量有关的年龄、智力等方面的差异。时间加工和工作记忆在额叶、顶叶、基底神经节等皮质存在共同的神经机制。未来应该丰富工作记忆的研究内容, 结合时间加工的分段性探讨工作记忆影响时间加工的具体进程及神经机制, 并力求在应用方面取得一定的成果。     

选择性注意的分心物加工机制对工作记忆的影响

通过实验法严格筛选被试,探讨了在有无分心物干扰的条件下,选择性注意的分心物加工机制(分心物抑制机制、分心物习惯化机制)对工作记忆的影响。结果揭示了,分心物抑制机制不仅能影响工作记忆的储存而且还影响工作记忆的加工;而习惯化机制只影响工作记忆的储存,不影响工作记忆的加工。     

工作记忆对小学三年级学生解决比较问题的影响

研究工作记忆与小学生解决比较问题成绩之间的关系。实验1运用双任务作业研究一致问题和不一致问题的工作记忆负荷是否有显著差别,被试为34名小学三年级学生。实验2运用工作记忆测验研究成功解题者与不成功解题者的工作记忆容量是否有显著差别,被试为37名小学三年级学生。结果表明;(1)小学生解决比较问题的成绩受问题类型的影响,他们在一致问题上的成绩显著优于不一致问题。(2)一致问题和不一致问题的工作记忆负荷水平不同,不一致问题的工作记忆负荷大于一致问题。(3)成功解题者的工作记忆容量大于不成功解题者的工作记忆容量。本研究结果说明工作记忆对小学生解决比较问题有重要影响。     

工作记忆、加工速度和推理能力对小学儿童策略适应性的影响

研究选取89名小学三~五年级学生,探讨工作记忆、加工速度、推理能力以及年龄对小学儿童策略适应性的影响。通过路径分析发现:(1)工作记忆和推理能力对策略适应性有直接效应;工作记忆通过推理能力对策略适应性产生间接效应;加工速度通过"加工速度→工作记忆→策略适应性"和"加工速度→工作记忆→推理能力→策略适应性"两条路径对策略适应性起间接作用;在三个因素中,工作记忆对策略适应性的总效应最大,而推理能力对策略适应性的直接效应最大。(2)年龄对加工速度和推理能力有直接效应,但对工作记忆的效应不显著;年龄对策略适应性不产生直接效应,年龄通过"年龄→加工速度→工作记忆→策略适应性"、"年龄→加工速度→工作记忆→推理能力→策略适应性"和"年龄→推理能力→策略适应性"三条路径对策略适应性产生间接影响。     

小学生考试粗心现象的心理分析

对314名小学3～5年级学生考试粗心情况、神经活动特性.以及书写水平的测试,揭示了小学生考试粗心现象与神经活动特性与书写水平之间的关系.结果显示: (1)小学生考试粗心现象与其皮质神经的活动强度没有必然的联系,与其皮质神经活动的均衡性也没有必然的联系; (2)小学生考试粗心程度与个体的书写水平呈中等程度的正相关.     

视觉工作记忆存储机制的研究

工作记忆是一个对信息进行暂时性加工和储存的记忆系统。目前对它的研究主要集中言语工作记忆子系统上,而对视觉工作记忆的研究则比较少。鉴于此,本文对视觉工作记忆储存机制的研究作一初步的小结,着重阐述了其中两个互相矛盾的存储理论——基于客体的理论和基于特征的理论。     

自我损耗对工作记忆的影响及其克服

实验1考察了自我损耗对工作记忆的影响。40名6年级小学生被随机分配到实验组和控制组,分别完成损耗任务和非损耗任务。结果发现,与控制组相比,实验组被试的工作记忆容量明显降低。实验2考察积极情绪能否克服自我损耗对工作记忆的负面影响。40名6年级小学生参加了实验。在完成损耗任务后,采用自传式回忆的方法诱发实验组的积极情绪。结果发现,诱发被试的积极情绪体验,能够克服自我损耗对于工作记忆的消极影响。     

Interaction of attentional and motor control processes in handwriting

The interaction between attentional capacity, motor control processes, and strategic adaptations to changing task demands was investigated in handwriting, a continuous (rather than discrete) skilled performance. Twenty-four subjects completed 12 two-minute handwriting samples under instructions stressing speeded handwriting, normal handwriting, or highly legible handwriting. For half of the writing samples, a concurrent auditory monitoring task was imposed. Subjects copied either familiar (English) or unfamiliar (Latin) passages. Writing speed, legibility ratings, errors in writing and in the secondary auditory task, and a derived measure of the average number of characters held in short-term memory during each sample ("planning unit size") were the dependent variables. The results indicated that the ability to adapt to instructions stressing speed or legibility was substantially constrained by the concurrent listening task and by text familiarity. Interactions between instructions, task concurrence, and text familiarity in the legibility ratings, combined with further analyses of planning unit size, indicated that information throughput from temporary storage mechanisms to motor processes mediated the loss of flexibility effect. Overall, the results suggest that strategic adaptations of a skilled performance to changing task circumstances are sensitive to concurrent attentional demands and that departures from "normal" or "modal" performance require attention.     

An examination of the seductive details effect in terms of working memory capacity

Previous work on learning from text has demonstrated that although illustrated text can enhance comprehension, illustrations can also sometimes lead to poor learning outcomes when they are not relevant to understanding the text This phenomenon is known as the seductive details effect. The first experiment was designed to test whether the ability to control one's attention, as measured by working memory span tasks, would influence the processing of a scientific text that contained seductive (irrelevant) images, conceptually relevant images, or no illustrations. Understanding was evaluated using both an essay response and an inference verification task. Results indicated that low working memory capacity readers are especially vulnerable to the seductive details effect. In the second experiment, this issue was explored further, using eye-tracking methodology to evaluate the reading patterns of individuals who differed in working memory capacity as they read the same seductively illustrated scientific text Results indicated that low working memory individuals attend to seductive illustrations more often than not and, also, for a longer duration than do those individuals high in working memory capacity.     

Investigating the lower level demands of writing: handwriting movements interfere with immediate verbal serial recall

The research identifies if handwriting captures attention for significant periods, resulting in a decline in working memory performance. Additionally, the experiments isolate whether the movements produced during handwriting contribute to that interference. To do this, verbal serial recall was compared between three different tasks???a listening task; a listening?+?handwriting task (i.e., motor and verbal demands); and a listening?+?handwriting-like drawing task (i.e., motor demands), in two experiments. Results showed that verbal serial recall was worse in the handwriting and drawing conditions compared to the listening condition. The handwriting and drawing conditions did not differ. In a third experiment, handwriting fluency was compared between a recall and no-recall task. This showed that handwriting fluency remains stable despite the addition of a verbal working memory task. In conclusion, the handwriting movements capture attention for significant periods, with little deterioration in recall due to the verbal component of handwriting.     

How prior knowledge,WMC, and relevance of information affect eye fixations in expository text

This study examined how prior knowledge and working memory capacity (WMC) influence the effect of a reading perspective on online text processing. In Experiment 1, 47 participants read and recalled 2 texts of different familiarity from a given perspective while their eye movements were recorded. The participants' WMC was assessed with the reading span test. The results suggest that if the reader has prior knowledge related to text contents and a high WMC, relevant text information can be encoded into memory without extra processing time. In Experiment 2, baseline processing times showed whether readers slow down their processing of relevant information or read faster through their relevant information. The results are discussed in the light of different working memory theories.     

The importance of knowledge in vivid text memory: An individual-differences investigation of recollection and familiarity

The goal of this study was to examine how individual variation in readers’ skills and, in particular, their background knowledge about a text are related to text memory. Recollection and familiarity estimates were obtained from remember and know judgments to text ideas. Recollection estimates to old items were predicted by readers’ background knowledge, but not by other comprehension-related factors, such as word-decoding skill and working memory capacity. False alarms involving recollection of new items (inferences) were diminished as a function of verbal ability, working memory capacity, and reasoning but increased as a function of background knowledge. The results suggest that recollection indexes the reader’s ability to construct a text representation in which text ideas are integrated with relevant domain knowledge. Moreover, these results highlight the importance of background knowledge in explaining individual variation in comprehension and memory for text.     

Distinguishing short-term memory from working memory

The aim of the present research was to determine whether short-term memory and working memory could be distinguished. In two studies, 7- to 13-year-olds (N = 155, N = 132) were administered tasks thought to assess short-term memory as well as tasks thought to assess working memory. Both exploratory and confirmatory factor analyses distinguished short-term memory tasks from working memory tasks. In addition, performance on working memory tasks was related to word decoding skill but performance on short-term memory tasks was not. Finally, performance on both short-term memory and working memory tasks were associated with age-related increases in processing speed. Results are discussed in relation to models of short-term and working memory.     

Linguistic context and children's recall in a probe word task

A probe word task was used to test first-, third-, and fifth-grade children's recall of words in varying linguistic contexts. Consistent with expectations based on short-term memory considerations, words that occurred in meaningful sentence contexts were better recalled than those appearing in strings of unrelated words, and words that appeared toward the end of the sentence or string were better recalled than those occurring toward the beginning. At the same time, the effects of prior text on recall, seen clearly in tasks used in constructive memory research, were not present in this short-term memory task. These findings suggest that while within-sentence semantic relational and syntactic information may be used for partial analysis while material is still in working memory, this state does not permit access to already analyzed information in prior text.The authors express appreciation to Richard Schwartz, Ronnie Wilbur, and Harlan Schweer for their suggestions throughout the course of the study.     

说明文阅读中的视角效应

说明文的阅读视角不仅影响阅读中信息的获得,而且会影响实时阅读加工过程。目前对视角效应最新的眼动研究,围绕阅读中编码相关信息到工作记忆中是否需要额外的时间这一争论,揭示了过去知识和工作记忆容量对阅读视角效应的影响,对视角效应产生的内在机制也有了更深层的认识。     

Individual differences in children's memory and reading comprehension: an investigation of semantic and inhibitory deficits

Three experiments compared the verbal memory skills of children with poor reading comprehension with that of same-age good comprehenders. The aims were to determine if semantic and/or inhibitory deficits explained comprehenders' problems on measures of verbal short-term memory and verbal working memory. In Experiment 1 there were no group differences on word- and number-based measures of short-term storage and no evidence that semantic knowledge mediated word recall. In Experiment 2 poor comprehenders were impaired on word- and number-based assessments of working memory, the greatest deficit found on the word-based task. Error analysis of both word-based tasks revealed that poor comprehenders were more likely to recall items that should have been inhibited than were good comprehenders. Experiment 3 extended this finding: Poor comprehenders were less able to inhibit information that was no longer relevant. Together, these findings suggest that individual differences in inhibitory processing influence the ability to regulate the contents of working memory, which may contribute to the differential memory performance of good and poor comprehenders.