语言能力的老化机制：语言特异性与非特异性因素的共同作用

语言能力的衰退是由于一般认知能力衰退引起的, 还是由于语言加工系统的衰退引起的, 抑或是两者的共同作用?研究中测量了青年组和老年组的一般认知能力(加工速度、工作记忆和抑制能力), 以及在词汇、句子和语篇三个水平上的语言理解能力和语言产生能力。结果发现, 一般认知能力、语言理解和语言产生能力都存在年老化现象。分层回归分析表明, 一般认知能力对语言能力的贡献, 以及语言理解能力和产生能力之间的相互贡献在青年组和老年组中是不同的, 且存在词汇、句子和语篇水平上的差异。在词汇水平上, 青年人的成绩能够被一般认知能力和另一种语言能力所显著预测, 而老年人的成绩却不受一般认知因素影响; 在句子水平上, 青年人的成绩仍能被一般认知能力或另一种语言能力所解释, 但这两类变量都无法预测老年人的任务成绩; 在语篇水平上, 青年人理解任务的成绩显著地受到产生能力影响, 而老年人的理解和产生任务成绩则分别可以被一般认知能力和语言理解能力所解释。对组间差异的回归分析表明, 一般认知能力和另一种语言能力对组间差异都有显著贡献, 且前者的贡献大于后者。上述研究结果表明, 语言能力的老化是语言特异性因素和非特异性因素共同作用的结果。     

语素意识、语音意识和快速命名在学前儿童言语能力发展中的预测作用:来自追踪研究的证据*

为探讨语素意识、语音意识和快速命名三种认知技能对汉语儿童口语词汇、汉字识别和阅读理解等言语能力发展的预测作用,本研究对74名学前儿童进行了一年半的追踪测查,结果发现:(1) 学前儿童的各项认知技能和言语能力随时间均有显著提高;(2)在控制了因变量的自回归效应和其他两种认知技能后,语音意识对一年半后的口语词汇成绩仍有独特的解释作用,快速命名能预测一年半后的汉字识别成绩,而语素意识是解释一年半后儿童汉字识别和阅读理解能力发展的重要变量。     

交流手势认知理论

手势是交流互动中一种重要的非语言媒介, 手势不仅可以辅助语言交流而且具有独立的交流性; 作为和语言共同发生的非语言媒介, 手势交流有助于降低交流认知负荷。文章重点归纳和述评了基于手势和语言表达关系的交流手势理论、交流手势激活理论、交流手势的认知节省理论。未来研究需要进一步考虑交流手势实验研究情境自然性和控制严格性间的平衡, 交流手势和其他非语言因素间的关系, 交流手势认知研究的现实意义。     

语言伴随性手势是否和语言共享同一交流系统?

语言伴随性手势是人类语言交流的一个普遍的特征, 它可以发挥信息交流的功能。依据产生目的以及适用范围的不同, 手势可以分成表象性手势和非表象性手势。多数研究者认为, 语言和手势动作是“近亲”, 具有“家族相似性”。来自语言发展、认知心理学和认知神经科学的证据均表明, 手势和语言共享同一个交流系统。当手势动作和发音单词意义相同时, 手势动作受到单词发音的干扰, 同时引发发音共振峰2 (F2)的放大。手势和言语之间遵循互相作用理论, 它们作用的基础是语义一致性, 镜像神经系统完成了两者语义一致性的传递。由于语言伴随性手势和语言之间的关系是语言和行为结合良好的特例, 因此, 对语言伴随性手势的研究将有助于对人类心智有一个更深层次的认识和理解。     

翻转教学法对高中生认知负荷及学习成绩的影响

采用不等组实验组、控制组前测后测的准实验设计,探讨了翻转课堂背景下翻转教学法对高中生认知负荷及学习成绩的影响。结果发现：（1）翻转教学法能有效降低高中生的内在认知负荷,提高其学习成绩与学习效率;（2）翻转课堂背景下,高中生的认知负荷存在知识反转效应,即高成绩者的收益低于低成绩者。结果提示,翻转课堂取得优异学习效果的心理机制在于通过有效降低学习者的内在认知负荷而影响其学习成绩;同时,翻转教学法的运用过程中须考虑学习者认知负荷的变化及学习效率,其对所有的学习者不是同等有效的。     

儿童手势及其与学习的关系

手势是在交流或认知过程中产生的、不直接作用于物体的手部运动, 具有具体性和抽象性。其分类主要从手势的来源、手势的内容、手势的意图及手势和言语的匹配性等角度进行划分。不同类型手势在出现时间及发展趋势上存在差异。手势在儿童词汇学习、言语表达、数学问题解决、空间学习及记忆等方面起促进作用, 但对言语理解的影响未得出一致结论。未来可关注不同类型手势与儿童认知发展的关系及对比不同来源手势在各学习领域的优势情况。     

交流手势的认知特征

手势是语言交流过程中的一种重要的非语言媒介, 其不仅与语言互动间的关系密切, 而且具有不同的交流认知特征。文章重点归纳和述评了手势和语言交流的关系, 手势相对独立的交流特征, 教育情境中的手势交流。文章具体提出：首先, 手势和语言的共同表达促进了语言的发生和语言的理解、整合和记忆; 其次, 手势一定程度上具有独立的交流性, 手势和语言的“不匹配性”反映了交流信息的变化和交流认知的改变; 最后, 教育情境中教师的手势表达可以引导学生的注意并澄清语言信息, 学生的手势交流有助于促进学习认知过程。未来研究需要进一步探讨手势对于语言交流功能的影响, 语言交流过程中手势交流的优势特征和认知机制, 教育情境中手势交流高效性的认知机制, 手势交流的影响因素、一般特征和个体差异。     

语素意识对学前儿童言语技能发展的预测作用：追踪研究的证据

为探讨词素意识、同形语素意识和形旁意识等不同层面语素意识对汉语儿童口语词汇、汉字识别和阅读理解能力发展的预测作用,本研究对75名学前儿童进行了一年半的追踪,结果发现:(1)学前儿童的语素意识和言语技能随时间均有显著增长。(2)在控制了因变量的自回归效应后,同形语素意识对一年半后的口语词汇成绩仍有显著的预测作用;词素意识能显著预测一年半后的汉字识别成绩;词素意识和形旁意识是儿童一年半后阅读理解成绩变异的重要解释变量。这表明语素意识对于学前儿童语言技能的发展具有重要的预测作用。     

不同语言理解能力中学生的主题推理特点

该研究使用移动视窗技术考察了初二和高一年级中的高低语言理解能力学生的主题推理加工特点。结果发现:(1)所有学生在无时间限制情况下,都能顺利完成语篇主题相似度判断,较低语言理解能力学生在阅读过程中不能进行有效主题推理;(2)较低语言理解能力被试在主题推理加工上的困难可能是由认知加工系统实时加工能力较差造成。     

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。     

Uneven Profiles: Language Minority Learners' Word Reading, Vocabulary, and Reading Comprehension Skills

English reading comprehension skill development was examined in a group of 87 native Spanish-speakers developing English literacy skills, followed from fourth through fifth grade. Specifically, the effects of Spanish (L1) and English (L2) oral language and word reading skills on reading comprehension were investigated. The participants showed average word reading skills and below average comprehension skills, influenced by low oral language skills. Structural equation modeling confirmed that L2 oral language skills had a large, significant effect on L2 reading comprehension, whereas students' word-level reading skills, whether in L1 or L2, were not significantly related to English reading comprehension in three of four models fitted. The results converge with findings from studies with monolinguals demonstrating the influence of oral language on reading comprehension outcomes, and extend these findings by showing that, for language minority learners, L2 oral language exerts a stronger influence than word reading in models of L2 reading.     

The comprehension skills of children learning English as an additional language

Background Data from national test results suggests that children who are learning English as an additional language (EAL) experience relatively lower levels of educational attainment in comparison to their monolingual, English‐speaking peers. Aims The relative underachievement of children who are learning EAL demands that the literacy needs of this group are identified. To this end, this study aimed to explore the reading‐ and comprehension‐related skills of a group of EAL learners. Sample Data are reported from 92 Year 3 pupils, of whom 46 children are learning EAL. Method Children completed standardized measures of reading accuracy and comprehension, listening comprehension, and receptive and expressive vocabulary. Results Results indicate that many EAL learners experience difficulties in understanding written and spoken text. These comprehension difficulties are not related to decoding problems but are related to significantly lower levels of vocabulary knowledge experienced by this group. Conclusions Many EAL learners experience significantly lower levels of English vocabulary knowledge which has a significant impact on their ability to understand written and spoken text. Greater emphasis on language development is therefore needed in the school curriculum to attempt to address the limited language skills of children learning EAL.     

信息呈现方式与学习者的个性特征对多媒体环境下学习效果的影响

采用两个实验:实验一以陈述性知识为学习内容,实验二以程序性知识为学习内容,在这两种情况下,分别用组间设计探讨信息呈现方式对不同认知风格和空间能力的学习者在多媒体环境下学习效果的影响。结果表明:(1)认知风格对陈述性知识在多媒体环境下的学习效果产生影响,而选择的多媒体信息呈现方式和被试的空间能力则对其不产生影响;(2)对于程序性知识的保持,多媒体信息呈现方式和被试认知风格都会对学习效果产生影响,被试空间能力则不会产生影响,而且被试不同的认知风格在不同的多媒体信息呈现方式上会产生不同的影响;(3)对程序性知识的迁移,多媒体信息呈现方式、被试认知风格和空间能力都会对多媒体环境下的学习效果产生影响,而且被试不同的认知风格和空间能力在不同的多媒体信息呈现方式上都会产生不同的影响。     

Speech-associated gestures, Broca's area, and the human mirror system

Speech-associated gestures are hand and arm movements that not only convey semantic information to listeners but are themselves actions. Broca's area has been assumed to play an important role both in semantic retrieval or selection (as part of a language comprehension system) and in action recognition (as part of a "mirror" or "observation-execution matching" system). We asked whether the role that Broca's area plays in processing speech-associated gestures is consistent with the semantic retrieval/selection account (predicting relatively weak interactions between Broca's area and other cortical areas because the meaningful information that speech-associated gestures convey reduces semantic ambiguity and thus reduces the need for semantic retrieval/selection) or the action recognition account (predicting strong interactions between Broca's area and other cortical areas because speech-associated gestures are goal-direct actions that are "mirrored"). We compared the functional connectivity of Broca's area with other cortical areas when participants listened to stories while watching meaningful speech-associated gestures, speech-irrelevant self-grooming hand movements, or no hand movements. A network analysis of neuroimaging data showed that interactions involving Broca's area and other cortical areas were weakest when spoken language was accompanied by meaningful speech-associated gestures, and strongest when spoken language was accompanied by self-grooming hand movements or by no hand movements at all. Results are discussed with respect to the role that the human mirror system plays in processing speech-associated movements.     

多媒体学习中线索原则是否存在经验逆转效应?——来自两项元分析的证据

经验逆转效应指出,对低先备知识者学习有积极作用的教学设计可能对高先备知识者无效,甚至有消极影响。本研究分别对高、低先备知识者进行关于线索对其学习过程中主观认知负荷及学习结果影响的元分析,检验线索原则是否存在经验逆转效应及认知负荷理论能否解释线索原则的经验逆转效应。结果表明,线索能降低低先备知识者学习过程中的主观认知负荷并促进其学习表现;但线索对高先备知识者认知负荷及学习成绩的总效应均不显著。结合元分析结果,本研究证明了在多媒体学习环境下线索原则存在部分经验逆转,且部分支持了线索原则经验逆转效应的认知负荷理论解释。     

高校多媒体教学环境下的教-学-学习绩效关系的建模与分析

本文是在先前建立的多媒体教学环境下教师授课、学生学习和学习绩效的3个因素结构模型基础上,采用路径建模技术,建立了多媒体教学环境下教一学一学习绩效关系模型。基于对该路径模型的分析,获得如下结论：（1）多媒体教学中影响因素的主导作用是沿着学习者认知加工过程中的信息流而展开的;（2）对于学生在课堂中的信息加工,影响最大的因素是教师授课时对学生的能力培养,影响为其次的因素是教师的授课技术;（3）课件的良好界面信息设计对学生的知识掌握起重要作用;（4）诸如授课速度过快、信息量过大等多媒体教学中的易现问题会增加学生的外在认知负荷而降低学习效果;（5）在多媒体教学中,教师与学生都要注意学生学习风格来更好地进行教学或学习。     

情感代理能否提高多媒体学习的效果?

近年来,情感代理如何影响学习受到了研究者们的高度重视。情感代理是可以通过面部表情、声音、肢体动作和言语信息等影响学习者情感体验的教学代理。以往研究主要关注两种类型的情感代理：表达型情感代理和移情型情感代理。表达型情感代理是仅通过自身的情绪表达(如：使用微笑的面部表情和热情的声音)以影响学习者情绪体验的代理。移情型情感代理则是能根据学习者的学习表现或情绪状态给予情感反馈(如;点头、鼓励和共情)的代理,其目的是为了调节学习者的情绪、激励其继续努力。虽然不同的研究者对情感代理的具体操作有所不同,但无论哪种类型的情感代理均是为了增加学习者的积极情绪,提高内部动机,最终促进学习。关于情感代理的潜在作用,研究者基于不同的理论观点给出了不同的解释。情绪感染理论认为一个人的情绪状态容易受到另一个人情绪表达的影响,因此界面代理的情绪会直接影响学习者的情绪和动机。情绪反应理论认为如果教师的言语和非言语线索诱发了积极的情绪,学习者就会产生趋近学习的行为(例如,制定相应的学习计划)。多媒体学习认知情感理论强调了学习过程中情感和动机的重要性。基于多媒体学习认知情感理论,情感代理能唤起学习者的积极情绪,增加学习动机,进而提高学习成绩。而认知负荷理论和干扰理论却认为情感代理丰富的面部表情和手势动作可能会增加学习者的外部认知负荷,吸引学习者的注意力,减少对关键信息的注意,因此干扰学习效果。在上述理论的指导下,研究者们对情感代理的效果进行了探究,结果发现,情感代理可以有效地唤起学习者的积极情绪(d_积极情绪= 0.45),提高学习动机(d_内部动机= 0.52)。但不一定能影响认知负荷（d_{内部认知负荷} = -0.01;d_{外部认知负荷} = 0.09;d_{相关认知负荷} = 0.08）,并且在学习效果上的作用也比较微弱(d_保持 = 0.18;d_理解 = 0.32;d_迁移 = 0.14;d_联合 = 0.32)。情感代理在学习效果上的作用不稳健的原因可能是受到了潜在调节因素的影响。例如,学习者的个体特征（如,工作记忆能力和年级水平）、情感代理的类型、任务特征和测验时间等。总之,尽管目前关于情感代理的研究结果存在不一致,但整体而言,在积极情感代理条件下,学习者更加快乐,更有动力。因此,在教育实践中,教学设计者可以考虑为学习者呈现一个积极的教学代理以帮助他们更加快乐地学习。未来关于情感代理的研究需要继续关注情感代理的操纵和评定方法;探究影响情感代理效果的边界条件;考察情感代理影响学习背后的神经机制;提高情感代理研究的生态效度等。     

Speech-associated gestures, Broca’s area, and the human mirror system

Speech-associated gestures are hand and arm movements that not only convey semantic information to listeners but are themselves actions. Broca’s area has been assumed to play an important role both in semantic retrieval or selection (as part of a language comprehension system) and in action recognition (as part of a “mirror” or “observation–execution matching” system). We asked whether the role that Broca’s area plays in processing speech-associated gestures is consistent with the semantic retrieval/selection account (predicting relatively weak interactions between Broca’s area and other cortical areas because the meaningful information that speech-associated gestures convey reduces semantic ambiguity and thus reduces the need for semantic retrieval/selection) or the action recognition account (predicting strong interactions between Broca’s area and other cortical areas because speech-associated gestures are goal-direct actions that are “mirrored”). We compared the functional connectivity of Broca’s area with other cortical areas when participants listened to stories while watching meaningful speech-associated gestures, speech-irrelevant self-grooming hand movements, or no hand movements. A network analysis of neuroimaging data showed that interactions involving Broca’s area and other cortical areas were weakest when spoken language was accompanied by meaningful speech-associated gestures, and strongest when spoken language was accompanied by self-grooming hand movements or by no hand movements at all. Results are discussed with respect to the role that the human mirror system plays in processing speech-associated movements.     

Alphabetic and nonalphabetic L1 effects in English word identification: a comparison of Korean and Chinese English L2 learners

Different writing systems in the world select different units of spoken language for mapping. Do these writing system differences influence how first language (L1) literacy experiences affect cognitive processes in learning to read a second language (L2)? Two groups of college students who were learning to read English as a second language (ESL) were examined for their relative reliance on phonological and orthographic processing in English word identification: Korean students with an alphabetic L1 literacy background, and Chinese students with a nonalphabetic L1 literacy background. In a semantic category judgment task, Korean ESL learners made more false positive errors in judging stimuli that were homophones to category exemplars than they did in judging spelling controls. However, there were no significant differences in responses to stimuli in these two conditions for Chinese ESL learners. Chinese ESL learners, on the other hand, made more accurate responses to stimuli that were less similar in spelling to category exemplars than those that were more similar. Chinese ESL learners may rely less on phonological information and more on orthographic information in identifying English words than their Korean counterparts. Further evidence supporting this argument came from a phoneme deletion task in which Chinese subjects performed more poorly overall than their Korean counterparts and made more errors that were phonologically incorrect but orthographically acceptable. We suggest that cross-writing system differences in L1s and L1 reading skills transfer could be responsible for these ESL performance differences.     

The development of comprehension and reading‐related skills in children learning English as an additional language and their monolingual,English‐speaking peers

Background. A significant number of pupils in UK schools learn English as an additional language (EAL). Relative differences between the educational attainment of this group and monolingual, English‐speaking pupils call for an exploration of the literacy needs of EAL learners. Aims. This study explores the developmental progression of reading and listening comprehension skills and a range of reading‐related skills in EAL learners, whose first language is of South Asian origin, and their monolingual peers. Sample. Participants were 39 children learning EAL and 39 monolingual, English‐speaking children who were all in school Year 3 at the start of the study. Method. Children completed standardized measures of comprehension, vocabulary, reading accuracy, and reading fluency in school Year 3 and again in Year 4. Results. The results suggest that, although children learning EAL often demonstrate fast and accurate reading accuracy skills, lower levels of vocabulary knowledge place significant constraints on EAL learners' comprehension of spoken and written texts. Conclusions. Reciprocal relationships between vocabulary and comprehension may lead to increasing gaps in reading comprehension between monolingual and EAL pupils over time. It is proposed that support for the development of vocabulary skills in children learning EAL is needed in early years' classrooms.