小学生形成合取概念的策略训练及其迁移效果

采用明确要求、策略讲授、讨论比较、练习巩固的方法,对小学四年级儿童形成合取概念的策略进行训练,结果发现：训练不仅能够促进儿童形成合取概念的能力发展,而且提高了他们的元认知水平,并在相关的问题解决中表现出能力的迁移。     

小学儿童规则发现的类比迁移研究

本研究以小学儿童为被试,证实了在策略提示条件下解决规则发现(合取规则和析取规则)的类比问题时,任务难度和表面相似性是影响策略的迁移的重要因素,并且发现小学儿童的思维能力存在着较大的个体差异.他们在问题解决时主要使用单维检验策略,多数小学儿童缺乏较强的元认知监控.     

LOGO程序设计教学对儿童元认知能力发展影响的研究

本研究以北京市一所小学中开始学习LOGO程序设计的150名儿童为被试,以瑞文标准推理测验和自行编制的元认知测验为测验工具,初步探讨了儿童学习LOGO程序设计与发展认知能力特别是元认知能力的关系.研究结果表明:(1)儿童学习了一年的LOGO程序设计后,在其一般智力的发展上不能表现出显着提高;(2)儿童经过为期一年的LOGO程序设计教学后,在一定程度上提高了计划和监控能力,即程序设计学习有利于儿童元认知能力的发展;(3)关于元认知测验的构成问题,尚有待于今后进一步研究证实.     

元认知监测与算术知识制约小学儿童心算策略运用能力的发展:一年纵向考察

为探究元认知监测与算术知识对儿童心算策略运用能力的影响如何随个体发展而变化，采用计算机任务与纸笔测量的方法，对85名小学三、五年级儿童进行了历时一年的纵向追踪研究。研究发现：（1）两组儿童的元认知监测和算术知识均呈增长趋势，算术知识的增长速度五年级显著快于三年级，且元认知监测增长速度与算术知识增长速度显著相关；（2）两组儿童中，元认知监测与算术知识增长速度更快的个体策略执行反应时与错误率的减少速度也更快；（3）五年级儿童的算术知识在元认知监测影响策略选择发展中起着完全中介作用。     

小学儿童在线和离线元认知监控的发展特点及其对问题解决的影响

本研究以小学二、四、六年级儿童为被试,在不同难度的拼图任务中考查其在线和离线元认知监控的发展特点及其对问题解决的影响。结果表明:(1)小学儿童的在线元认知监控能力随年级升高而提高,六年级儿童的计划时间显著长于二、四年级儿童。(2)准确预测和评价任务执行时间的人数百分比随年级升高而依次增加;而难度评价准确性在四、六年级间发展较平稳,并高于二年级。(3)在线和离线元认知监控对问题解决的影响与任务难度有关,在简单和中等难度任务中,离线元认知判断有助于问题解决;而在复杂任务中,在线元认知监控促进问题解决。     

家庭社会经济地位对流动儿童认知能力的影响:父母教养方式的中介作用

以北京市某小学三、四年级的133名流动儿童和129名非流动儿童为被试,采用问卷和行为实验的方法,探讨家庭社会经济地位对流动儿童认知能力的影响,以及父母教养方式在其中的中介作用。结果发现：（1）流动儿童的工作记忆、元认知能力显著低于非流动儿童,家庭社会经济地位较非流动儿童更低,父母教养方式更消极;（2）流动儿童家庭社会经济地位与元认知显著正相关,父母教养方式中多个维度与元认知显著相关,而只有母亲过度干涉与保护与注意力显著负相关;（3）在流动儿童中,父亲情感温暖与理解部分中介家庭社会经济地位对儿童元认知的影响,效应量为30%。     

11~14岁超常儿童与普通儿童问题解决能力的发展比较

以北京市某中学和某小学11~14岁之间294名学生为被试, 其中超常儿童131人, 普通儿童163人。采用推箱子任务, 结合横向比较和纵向追踪数据, 从认知能力、元认知能力和认知效率三个维度来考察超常儿童与普通儿童问题解决能力的发展差异。结果发现超常儿童在问题解决能力的三个维度上均优于普通儿童, 两类儿童问题解决能力的发展模式不一致：超常儿童的问题解决能力发展先快后慢, 快速发展期在11~12岁半之间; 普通儿童的问题解决能力发展先慢后快, 快速发展期在12岁半~14岁之间。超常儿童与普通儿童的问题解决能力差异随年龄增大逐渐减小。     

小学儿童数概念与运算能力发展的研究

我们曾对学龄前儿童和初入学儿童数概念与运算能力的发展作了研究。小学儿童的运算思惟是如何发展的呢?这也是儿童心理学重要研究领域之一。 我们围绕着小学儿童数概念与运算能力发展的研究,企图摸索一下小学儿童运算中     

认知风格与合取概念策略关系的研究

在个体获得概念的过程中，需要采取一定的策略。布鲁纳的人工概念实验中，就发现被试所采取的策略有同时性扫描、继时性扫描、保守性聚焦和博弈性聚焦等策略。成人绝大多数会采用聚焦策略获取概念，但儿童就未必如此。有人曾采用这一经典实验方法研究儿童的合取人工概念的策略，发现了在小学五年级，采用扫描策略的学生还占一半以上．六年级学生只有半数能采用聚焦策略，但是，采用有效性愈     

儿童、青年与老年人在知觉和高阶元认知监控上的年龄差异

元认知是以监测和控制为核心的动态调节活动。本研究以9岁儿童、年轻人和老年人为研究对象，分别采用选点任务和词对学习任务，在知觉元认知和高阶元认知层次考察元认知监测和控制及其关系随年龄变化的特点。结果显示：(1)儿童的知觉元认知和高阶元认知监控能力大都低于年轻人；(2)老年人的知觉元认知能力与年轻人相似，但高阶元认知能力则低于年轻人；(3)老年人和年轻人一样能够在记忆监测中利用控制线索，而9岁儿童尚未表现出这种能力。本研究从发展的角度，支持了知觉元认知与高阶元认知能力具有领域特殊性的理论假设，并对监测和控制的关系发展进行了讨论。     

Age differences in the effects of social influence on children's eyewitness performance and their metacognitive monitoring

The current work investigated the effects of social influence on children's recall accuracy and metacognitive monitoring. Two studies were conducted in which 8- and 10-year-olds were confronted with postevent information in an interview situation. An interviewer (Study 1) or a confederate (Study 2) provided postevent information with two levels of assertiveness, inducing (a) a variation of conformity pressure and (b) a variation of information credibility. Afterwards, children's confidence judgments were assessed. The results revealed significant age differences in children's ability to adequately cope with variations of social influence. Although conformity pressure was especially important for the 8-year-olds, effects of informative social influence were independent of age. However, 10-year-olds were also able to act appropriately on low credibility, thereby demonstrating a more sophisticated consideration of social influence sources. Moreover, varying assertiveness also affected the quality of children's confidence judgments by improving their metacognitive differentiation skills.     

Strategy Discovery as a Competitive Negotiation between Metacognitive and Associative Mechanisms

Both metacognitive and associative models have been proposed to account for children's strategy discovery and use. Models based on only metacognitive or only associative mechanisms cannot entirely account for the observed mix of variability and constraint revealed by recent microgenetic studies of children's strategy change. We propose a new approach where metacognitive and associative mechanisms interact in a competitive negotiation. This approach provides the flexibility to model the observed variability and constraint.     

The generalizability of story grammar training across setting and tasks

Reading achievement depends in part on children's ability to employ strategies to monitor their comprehension, that is on children's use of metacognitive skills. An experimental intervention program created to foster such skills was evaluated. The story grammar training was designed to increase both strategic reading behavior and explicit, observable comprehension monitoring. Fourth-grade (N = 20) and fifth-grade (N = 16) children were randomly assigned to experimental and control groups. Maintenance was examined using free and probed oral recall, notetaking, and summarization of brief narrative and expository texts. Generalization was assessed through free and probed written recall of a lengthy text, which required both strategic reading and summarization skills for adequate comprehension. Skill acquisition was clearly demonstrated; trained readers were able to recall and summarize passages better than untrained readers. The evidence for generalization was more equivocal: although trained readers' free recall was significantly better than that of untrained readers, their probed recall was not. Provision of metacognitive skills that promote active comprehension monitoring, then, appears to provide children with the tools needed for independent reading. Programs designed to provide such skills may aid efforts to prevent reading failure.     

元认知的神经机制:元认知功能、脑区与脑网络

元认知是指个体对当前进行的认知活动的监测和调节。通过对元认知神经机制研究的梳理,归纳出两条研究主线:一条主线以具体元认知加工的脑区激活研究为主,主要考察元认知与认知过程的分离及典型元认知加工的共享性和特异性。研究发现元认知加工主要与前额叶有关,还涉及脑岛、顶叶、颞叶和楔前叶等部分脑区。另一条主线探讨广泛的元认知功能与广泛大脑网络的相关。研究提出了大脑的“元认知网络”的概念,发现脑损伤或病变造成的元认知功能损伤与脑功能网络有关,而非固定在某一特定脑区。建议未来的研究应重视四个方面的研究:元认知加工的具体脑区和脑功能网络,元认知神经机制的分离,元认知脑功能的损伤和元认知训练的改善作用,以及基于神经机制研究的元认知模型的建构与修正。     

Confidence judgments in children's and adults' event recall and suggestibility

The present work investigated the role of children's and adults' metacognitive monitoring and control processes for unbiased event recall tasks and for suggestibility. Three studies were conducted in which children and adults indicated their degree of confidence that their answers were correct after (Study 1) and before (Study 2) answering either unbiased or misleading questions or (Study 3) forced-choice recognition questions. There was a strong tendency for overestimation of confidence regardless of age and question format. However, children did not lack the principal metacognitive competencies when these questions were asked in a neutral interview. Under misleading questioning, in contrast, children's monitoring skills were seriously impaired. Within each age group, better metacognitive differentiation was positively associated with recall accuracy in the suggestive interview.     

Children's metacognitive judgments in an eyewitness identification task

Two experiments examined children's metacognitive monitoring of recognition judgments within an eyewitness identification paradigm. A confidence-accuracy (CA) calibration approach was used to examine patterns of calibration, over-/underconfidence, and resolution. In Experiment 1, children (n=619, mean age=11 years 10 months) and adults (n=600) viewed a simulated crime and attempted two separate identifications from 8-person target-present or target-absent lineups given lineup instructions that manipulated witnesses choosing patterns by varying the degree of social pressure. For choosers, but not nonchoosers, meaningful CA relations were observed for adults but not for children. Experiment 2 tested a guided hypothesis disconfirmation manipulation designed to improve the realism of children's metacognitive judgments. Children (N=796, mean age=11 years 11 months) in experimental and control conditions viewed a crime and attempted two separate identifications. The manipulation had minimal impact on the CA relation for choosers and nonchoosers. In contrast to adults, children's identification confidence provides no useful guide for investigators about the likely guilt or innocence of a suspect. These experiments revealed limitations in children's metacognitive monitoring processes that have not been apparent in previous research on recall and recognition with younger children.     

图形推理任务中儿童策略获得的发展机制

运用微观发生学设计对30名6岁儿童在矩阵填充任务中策略获得的发展机制进行了研究。结果发现：(1)从策略获得点前的错误类型分析,这个阶段主要是元认知机制起决定作用,图形推理的策略获得是一个渐进过程;(2)从反应时的变化趋势分析,元认知机制仍起决定作用,而在策略获得后期,联结机制代替元认知机制起决定性作用;(3)从自我解释中提到的维度分析,也表明元认知机制起着决定性作用,但联结机制在某些题目维度上已经逐渐“竞争”超过了元认知机制。     

On the evolutionary origins of executive functions

In this paper it is proposed that the prefrontal lobe participates in two closely related but different executive function abilities: (1) "metacognitive executive functions": problem solving, planning, concept formation, strategy development and implementation, controlling attention, working memory, and the like; that is, executive functions as they are usually understood in contemporary neuroscience; and (2) "emotional/motivational executive functions": coordinating cognition and emotion/motivation (that is, fulfilling biological needs according to some existing conditions). The first one depends on the dorsolateral prefrontal areas, whereas the second one is associated with orbitofrontal and medial frontal areas. Current tests of executive functions basically tap the first ability (metacognitive). Solving everyday problems (functional application of executive functions), however, mostly requires the second ability (emotional/motivational); therefore, these tests have limited ecological validity. Contrary to the traditional points of view, recent evidence suggests that the human prefrontal lobe is similar to other primates and hominids. Other primates and hominids may possess the second (emotional executive functions) prefrontal ability, -but not the first (metacognitive executive functions) one. It is argued that metacognitive executive functions are significantly dependent on culture and cultural instruments. They probably are the result of the development and evolution of some "conceptualization instruments"; language (and written language as an extension of oral language) may represent the most important one. The second executive function ability (emotional/motivational) probably is the result of a biological evolution shared by other primates.     

Metacognitive Ability and Test Performance Among College Students

We studied college students' metacognitive ability to see whether or to what extent it would be correlated with actual test grades. We hypothesized that higher metacognitive ability would correlate with higher exam marks and that lower metacognitive ability would correlate with lower exam marks. College students (N = 109) were asked to guess the grade they expected to receive at the completion of a regular classroom exam. We found a significant negative correlation between the actual grade received, a measure of cognitive ability, and the difference between the actual grade and the expected grade, a measure of metacognitive ability.