专家与新手教师内隐与外显学习的比较

教师作为典型的知识密集、技术密集的群体,其隐性知识也自然比较集中和典型,而专长研究可以有效地揭示教师的知识获取特点和学习规律。然而,以往的专长研究往往通过测量专家教师和新手教师在某方面的外显行为或外显知识的差异了解教师的知识结构和行为特点,这种做法由于忽略了教师的内隐学习和隐性知识,因此难以有效地揭示专家教师与新手教师在知识和能力结构上的真实差异。本研究借鉴认知心理学对专长的研究方式（即专家--新手比较）,运用经典的序列反应时任务（SRT）调整后的范式,采用带颜色边框的同一个学生的四种真实课堂表情图片作为刺激材料,以表情作为内隐学习的维度,以颜色作为外显学习的维度,对61名专家教师与88名新手教师在内隐/外显序列学习上的差异进行了比较研究。结果发现：（1）专家和新手教师被试群体均能够习得内隐/外显序列规则;（2）专家教师与新手教师在内隐学习上存在显著差异,专家教师内隐学习效果要优于新手教师;（2）专家教师与新手教师在外显学习维度上差异并不显著。结论：专家教师与新手教师有着近乎相当的外显学习能力和外显知识水平,但专家教师的内隐学习能力和隐性知识水平要显著高于新手教师。     

青少年内隐自尊与自我防卫关系研究

对84名被试的内隐自尊、外显自荨与自我防卫关系的研究结果表明:(1)外显自尊与显性自恋存在显著正相关,与隐性自恋存在显著负相关.内隐自尊与隐性自恋存在显著正相关,两种自尊对自我防卫预测作用不同.(2)内隐自尊与外显自尊的分离指标与隐性自恋存在显著正相关,提示内隐自尊与外显自尊差距越大,自我防卫水平越高.(3)内隐自尊与外显自尊分离指标与显性自恋存在显著负相关.     

内隐学习“三高”特征的实验研究

本研究在社会认知的人物特征识别范畴内,探讨在高强度练习和准确反馈条件下,内隐学习的高选择力、高潜力以及高密度贮存三大特征。实验采用一种测量内隐和外显学习的新方法,要求被试学会把像片按其组合特征分类。这些特征包括人物姿势的正侧面(显著维度特征),人物容貌的美丑(非显著维度特征)。结果表明:(1)非显著特征的学习,内隐被试表现出更大且显著的底层规则的迁移,比外显被试具有更高的选择力。(2)内隐被试表现出高潜力的内隐知识。(3)信息论处理揭示了内隐知识传递和贮存的高密性和高效性。     

内隐学习的主观测量标准

近40年来,验证知识的内隐性一直是内隐学习研究的焦点。传统三大范式常以自由言语报告或是迫选测验作为验证知识内隐性的外显指标,然而各种迹象表明,言语报告和迫选测验存在一定的局限性。由此,Dienes等人提出了内隐学习的主观测量。文章将从言语报告和追选测验的局限性着手,阐述主观测量诞生的必要性及其在衡量知识意识性上的效度。     

外显知识对运动技能内隐学习的影响

总结了近年来关于外显知识对运动技能内隐学习影响的研究。提出外显知识对内隐学习存在影响,但其作用的大小及其性质取决于外显知识的呈现时间、内容、内隐规则的可觉察程度、认知负荷以及压力等因素。提供外显知识既可能有利于任务的完成,也可能激发与任务规则无关的注意过程,阻碍内隐学习。外显知识可影响行为,却不一定能被有意识地提取。外显知识对学习者的认知过程和动作模式均会产生影响。     

运动知识与概念知识概率学习下的内隐学习效应

研究采用序列学习范式,用反应时间接测量被试的内隐知识,问卷以及再认成绩直接测量被试的外显知识,并采用PDP测量被试的意识与无意识贡献率.结果表明:(1)无RSI条件下能习得一定的无意识知识,而在有RSI条件下习得的知识大部分能被外显地意识到.(2)当内隐序列学习中既包含运动知识又包含概念知识时,无RSI条件下易获得运动知识;而在有RSI条件下,如果时间充分且能协调注意资源,运动知识和概念知识均能有效学习.     

基于SC-IAT的中华民族认同感内隐测量——来自少数民族大学生的数据

以维吾尔族、藏族大学生为被试,通过预实验选定概念词和属性词以使用单类内隐联想测验测量被试的内隐中华民族认同水平,采用问卷测量被试的外显中华民族认同水平,讨论内隐和外显中华民族认同的关系。结果表明,维吾尔族与藏族学生均具有积极的中华民族内隐认同,内隐效应不存在性别和民族差异,且内隐认同与外显认同是相互独立的结构。应通过群际接触等方式不断内化中华民族内隐认同,以促进民族心理融合,加强民族团结进步教育。     

关于阅读中的外显与内隐问题研究--兼谈高师英语阅读教学改革

目的：从新课程视角,探讨英语阅读中的外显与内隐问题,为阅读教学改革提供理论依据。方法：根据外显学习和内隐学习理论,对分析性阅读和概括性阅读进行分析比较,考察被试在分析性(外显的)和概括性(内隐的)阅读的时候,是如何“投射”出自己获取信息技能的过程的。结果：(1)阅读中存在着内隐现象且具有与外显性阅读相近的阅读成绩和效率;(2)各组被试阅读过程中未见有显著的性别差异;(3)外显阅读组和内隐阅读组均存在着特别显著的年级差异。结论：对于知识的吸收掌握和应用以及阅读能力的培养,外显阅读与内隐阅读各具有特色,互为补充,阅读教学中应充分认识到外显与内隐在阅读理解中的不同效果与作用。     

同步内隐／外显序列学习：事件相关的fMRI的初步研究

本文利用事件相关fMRI研究探讨对于内隐和外显学习在脑区激活上的差异.实验采用同步内隐/外显学习序列,以有色的形状作为刺激材料.要求被试对于刺激的颜色做选择反应,并在颜色消失后找出形状的内在规则.颜色和图形序列分别采用两个独立的马尔可夫链,即下一个图形的颜色或者形状有70%的可能服从序列规则.行为数据显示被试习得了外显和内隐的规则,fMRI成像主要比较内隐和外显学习在学习过程和知识运用上脑区激活的差异.结果发现,与内隐学习柑比,外显学习在额叶的激活更为显著.而且,内隐学习和外显学习在视觉皮层的激活出现分离,内隐学习中枕叶的激活减弱,而外显学习中枕叶的激活增加.     

序列反应时任务中内隐和外显学习表征方式的实验研究

采用改进的序列反应时任务,探讨内隐和外显学习的知识表征方式,发现内隐组和外显组被试都习得了一定的序列规则.内隐组对标准字母的反应显著快于知觉偏差,而后者则又显著快于对动觉偏差字母的反应;外显组对标准字母的反应显著快于知觉偏差和动觉偏差,而后两者之间则没有区别.以上结果表明外显和内隐学习中知觉表征和动觉表征都起作用,不过在内隐学习中动觉表征起的作用更大.     

Implicit learning: Below the subjective threshold

In this review, we consider three possible criteria by which knowledge might be regarded as implicit or inaccessible: It might be implicit only in the sense that it is difficult to articulate freely, or it might be implicit according to either an objective threshold or a subjective threshold. We evaluate evidence for these criteria in relation to artificial grammar learning, the control of complex systems, and sequence learning, respectively. We argue that the convincing evidence is not yet in, but construing the implicit nature of implicit learning in terms of a subjective threshold is most likely to prove fruitful for future research. Furthermore, the subjective threshold criterion may demarcate qualitatively different types of knowledge. We argue that (1) implicit, rather than explicit, knowledge is often relatively inflexible in transfer to different domains, (2) implicit, rather than explicit, learning occurs when attention is focused on specific items and not underlying rules, and (3) implicit learning and the resulting knowledge are often relatively robust.     

Implicit synthesis

In this reply to Neal and Hesketh and to the commentators, we argue that implicit knowledge is partly abstract and can be usefully defined by the criteria of both metaknowledge and intentional control. We suggest that the pattern of dissociations supports a claim of separate implicit and explicit learning modes. According to our characterization, implicit learning leads to knowledge that is not automatically represented as knowledge by the learning process; instead, the presence of knowledge has to be inferred by the subject (partial explicitation) if metaknowledge is gained at all. During explicit learning, knowledge is automatically labeled as knowledge by the learning process, so that metaknowledge comes immediately and to the fullest extent. Finally, we suggest that implicit knowledge may to some degree apply regardless of intention.     

Implicit probabilistic sequence learning is independent of explicit awareness

Studies into interactions between explicit and implicit motor sequence learning have yielded mixed results. Some of these discrepancies have been attributed to difficulties in isolating implicit learning. In the present study, the effect of explicit knowledge on implicit learning was investigated using a modified version of the Alternating Serial Response Time (ASRT) task, a probabilistic sequence learning paradigm that yields continuous and relatively pure measures of implicit learning. Results revealed that implicit learning occurred to the same extent, whether or not subjects had explicit knowledge. Some evidence, however, indicated that explicit knowledge could interfere with the expression of implicit learning early in training. In addition, there were dissociations between learning measures, in that reaction time and accuracy were differentially affected by explicit knowledge. These findings indicate that implicit sequence learning occurs independently of explicit knowledge, and help to explain previous discrepant findings.     

The Relation Between Implicit and Explicit Learning: Evidence for Parallel Development

Much research has focused on the separability of implicit and explicit learning, but less has focused on how they might interact. A recent model suggests that in the motor-skill domain, explicit knowledge can guide movement, and the implicit system learns in parallel, based on these movements. Functional imaging studies do not support that contention, however; they indicate that learning is exclusively implicit or explicit. In the experiment reported here, participants learned a motor sequencing task either implicitly or explicitly. At transfer, most of the stimuli were random, but the sequence occasionally appeared; thus, it was not obvious that explicit knowledge could be applied to the task. Nevertheless, participants with explicit training showed sequence knowledge equivalent to those with implicit training, implying that implicit knowledge had been acquired in parallel with explicit knowledge. This result has implications for the development of automaticity and of motor-skill learning.     

Implicit sequence learning with competing explicit cues.

Previous research has shown that the expression of implicit sequence learning is eliminated in a choice reaction time task when an explicit cue allows participants to accurately predict the next stimulus (Cleeremans, 1997), but that two contingencies predicting the same outcome can be learned and expressed simultaneously when both of them remain implicit (Jiménez & Méndez, 1999). Two experiments tested the hypothesis that it is the deliberate use of explicit knowledge that produces the inhibitory effects over the expression of implicit sequence learning. However, the results of these experiments do not support this hypothesis, rather showing that implicit learning is acquired and expressed regardless of the influence of explicit knowledge. These results are interpreted as reinforcing the thesis about the automatic nature of both the acquisition and the expression of implicit sequence learning. The contradictory results reported by Cleeremans are attributed to a floor effect derived from the use of a special type of explicit cue.     

试析内隐学习的意识-无意识兼容性

内隐学习研究初期,其无意识特点揭示了区别于外显学习的独特本质。但随着研究的深入,内隐学习逐渐昭显出与意识的丝丝联系。本文从此出发,探讨内隐学习的意识-无意识的兼容特点,具体从理论和实证两方面探讨内隐学习和无意识的联系,从次要任务研究、内隐学习的理解性以及内隐知识的发展三方面阐述内隐学习和意识的联系。     

Implicit and explicit processes in a second-language learning task

Abstract

Two experiments examined the learning of a set of Greek pronunciation rules through explicit and implicit modes of rule presentation. Experiment 1 compared the effectiveness of implicit and explicit modes of presentation in two modalities, visual and auditory. Subjects in the explicit or rule group were presented with the rule set, and those in the implicit or natural group were shown a set of Greek words, composed of letters from the rule set, linked to their pronunciations. Subjects learned the Greek words to criterion and were then given a series of tests which aimed to tap different types of knowledge. The results showed an advantage of explicit study of the rules. In addition, an interaction was found between mode of presentation and modality. Explicit instruction was more effective in the visual than in the auditory modality, whereas there was no modality effect for implicit instruction. Experiment 2 examined a possible reason for the advantage of the rule groups by comparing different combinations of explicit and implicit presentation in the study and learning phases. The results suggested that explicit presentation of the rules is only beneficial when it is followed by practice at applying them.     

Implicit and Explicit Learning in Individuals with Agrammatic Aphasia

Implicit learning is a process of acquiring knowledge that occurs without conscious awareness of learning, whereas explicit learning involves the use of overt strategies. To date, research related to implicit learning following stroke has been largely restricted to the motor domain and has rarely addressed implications for language. The present study investigated implicit and explicit learning of an auditory word sequence in 10 individuals with stroke-induced agrammatic aphasia and 18 healthy age-matched participants using an adaptation of the Serial Reaction Time task. Individuals with aphasia showed significant learning under implicit, but not explicit, conditions, whereas age-matched participants learned under both conditions. These results suggest significant implicit learning ability in agrammatic aphasia. Furthermore, results of an auditory sentence span task indicated working memory deficits in individuals with agrammatic aphasia, which are discussed in relation to explicit and implicit learning processes.     

试析内隐学习的长时功效

内隐学习的长时功效是指 ,其发生是自动的 ,但是需要一定时间的练习积累 ;内隐学习的效果是抗干扰的 ,但是其进程仍然是动态发展的。长时功效的提出 ,促使人们在理论上反思内隐学习的特性、内隐学习和外显学习的关系、乃至整体的知识表征问题 ;在实践上则为内隐学习的合理诱发和充分利用提供了借鉴。