盲人建构陌生环境空间表征的策略及其作用

空间表征对于盲人定向行走具有重要意义。以往研究者集中探讨早期视觉经验缺失对于盲人空间表征的影响, 较少探究空间表征建构的过程性因素, 即探路策略对于盲人空间表征的影响。本研究采用现场实验的方法探究了盲人建构陌生环境空间表征采用的策略及其作用。结果发现：视觉经验缺失对盲人陌生环境空间表征能力造成了不利影响, 然而, 被试运用有效的策略可以弥补视觉缺失带来的损失, 且利用空间关系策略的个体所建构的空间表征更为精确, 定向行走效率也更高。     

Interpreting HOL in the calculus of constructions

The purpose of this paper is to consider a representation of the HOL theorem-prover in the calculus of constructions with the property that consistency results from the calculus of constructions imply such results in HOL. This kind of representation is impossible using the propositions-as-types representation of logic and equality, but it is possible if a different representation is used.     

重读对语篇表征中的信息的激活的影响

考察在口语语篇表征中重读是如何影响新信息和旧信息的激活.结果表明,与无重读的基线条件相比,重读条件下,新信息和旧信息在语篇表征中的激活水平都提高.无论其信息结构如何,重读会提高它所标识的概念节点在语篇表征中的激活.     

客体表征质量在语义客体注意效应中的作用

已有研究表明,除自下而上因素外,自上而下因素也能够对客体知觉起到调节作用,从而影响注意的分配。本研究以不同词频（高频和低频）的汉语双字词为实验材料,采用双矩形线索范式变式考察不同语义客体表征质量对基于语义客体注意效应的影响。结果发现,在高语义客体表征质量的条件下出现了基于语义客体的注意效应,而在低语义客体表征质量的条件下并未出现基于语义客体的注意效应。该结果表明,语义客体表征质量的高低是影响基于语义客体注意效应的重要因素。     

复合词在言语产生的词汇通达中的表征

言语产生研究对于复合词的通达形成什么表征存在分歧。是形成整词表征还是分解为词素表征？用整词和词素频率效应考察,荷兰语的结果支持复合词的分离阶段通达模型和相应的分解表征假设,汉语和英语的结果支持复合词的独立网络通达模型和相应的整词表征假设。本文经过文献回顾指出,词汇表征不同于心理词典,语言、加工方式和加工通道都很可能造成复合词表征的差异。     

预期推理在长时记忆中的表征形式

该研究采用移动窗口技术,通过两个实验研究探讨在高低不同竞争条件下预期推理结果在长时记忆中的表征形式。实验结果表明,预期推理在长时记忆中的表征形式依赖于文本中预期推理的引发语境,在不同竞争强度的预期语境中,预期推理的结果在长时记忆会以不同的形式进行表征。在低竞争条件下,预期推理的结果以确定的形式表征;只有在高竞争条件下,预期推理的结果才会以假定的形式进行表征。     

父母在自我概念中的神经表征

在自我概念的构成中,他人尤其是亲密他人起着至关重要的作用。个体对父母相关信息的表征影响着个体自我概念的形成。对父母面孔的加工,涉及信息在个体知觉领域的表征;对父母人格特质的加工,涉及信息在个体心智领域的表征。个体对父母信息的神经表征存在性别和文化背景的差异。未来研究应整合表征父母信息的主要脑区及其作用,在研究思路上应考察家庭结构和依恋类型等因素。     

可操作物体识别过程中的两种操作动作表征

已有大量研究表明, 视觉背侧通路中的背侧−背侧通路和腹侧−背侧通路分别表征与物体相关的抓握和使用动作, 形成结构性和功能性操作动作表征。这两种操作动作表征在神经基础、激活条件、时间进程, 以及与长时记忆的联系方面都存在差异, 并且共同参与到可操作物体的识别过程中。关于结构性和功能性操作动作表征的研究不仅证明了操作动作信息对于可操作物体识别的重要性, 而且对于深入研究物体如何在大脑中表征具有重要意义。     

自我优势效应对远近空间中空间参照框架的影响

联合颜色−标签匹配任务和空间参照框架判断任务,考察自我优势效应对远近空间中空间参照框架表征的影响。颜色−标签匹配任务要求被试对颜色（黑色/白色叉子）与标签词（自我/他人）之间建立稳定的联结,被试随机分为自我联结组和他人联结组,两组被试均需在远近空间中完成空间参照表征任务。结果发现：（1）与他人联结组相比,自我联结组表现出显著的自我优势效应;（2）自我优势效应对空间参照表征的影响仅体现在近处空间且对自我中心表征任务的影响更大。研究表明,自我优势效应优先影响近处空间表征,表现出近处优先性。     

肢体形状和肢体动作表征的早期发展

肢体是社会性信息的重要载体。研究肢体表征的早期发展对于揭示其肢体表征加工的内在机制, 进一步理解婴儿的社会性发展具有重要意义。从肢体形状和肢体动作两个方面来看, 已有研究主要考察了婴儿在处理肢体结构信息和运动信息时的表征方式, 并提出了婴儿肢体表征发展机制的两种理论。未来应进一步明确婴儿肢体表征的具体发展过程及关键期, 并通过脑成像技术探究生物运动偏好对于肢体表征的作用机制。     

练习背景下表征水平的变化

Karmiloff-Smith提出的表征重述理论认为表征重述是人类获取知识的重要途径。为探讨练习是否能够提供表征重述的机会从而促进表征水平的变化,对29名小学一年级儿童进行数字分解组合任务的研究。结果表明：（1）练习背景下约有半数儿童的表征从内隐水平发展到外显水平,但其他儿童的表征水平没有发生任何变化;（2）练习背景下儿童表征变化的路线并不完全像Karmiloff-Smith设想的那样经由程序阶段到元程序阶段再到概念化阶段,而是存在其他多种可能的发展路线;（3）练习背景下儿童获得的表征的灵活性是有限的,即可以推广到近迁移问题上,而难以推广到远迁移问题上     

3~5岁儿童理解和使用空间表征的特点

以96名3~5儿童为被试,采用自编的儿童空间表征实验任务,在语言表征、模型表征和图画表征三种空间表征形式上,考察了儿童理解和使用空间表征的发展特点。结果表明:(1)总体上,3~5岁儿童理解空间表征的发展水平均显著高于使用空间表征的发展水平。(2)3~5岁儿童理解和使用空间表征的发展表现出显著的年龄效应。(3)从不同的空间表证形式来看,3岁儿童理解语言表征的能力与理解模型表征的能力之间差异显著,4岁儿童使用语言表征的能力与使用模型表征的能力之间的差异、使用语言表征的能力与使用图画表征的能力之间的差异、以及使用模型表征的能力与使用图画表征的能力之间的差异都显著,其余形式的空间表征理解之间的差异或空间表征使用之间的差异在各年龄段中均不显著。     

Children's representation of knowledge in verification

Thirty-two children aged 8–9 and 10–11 were asked to perform two statement verification tasks. Task 1 consisted of statements that were likely to elicit an affirmative knowledge representation,You have three eyes, is likely to elicit the representation,I have two eyes. Task 2 consisted of statements that were likely to elicit a negative knowledge of representation,You have a tail, is likely to elicit a negative representation,I do not have a tail. All statements varied in two dimensions, polarity (affirmative vs. negative) and truth value (true vs. false). Negative statements in Task 1 were found to be more difficult for children to verify than those in Task 2. This performance difference was used to infer the form of knowledge representation generated in verifying negative statements.     

Self‐Representations in Immersive Virtual Environments1

This experiment varied whether individuals interacted with virtual representations of themselves or of others in an immersive virtual environment. In the self‐representation condition, half of the participants interacted with a self‐representation that bore photographic resemblance to them, whereas the other half interacted with a self‐representation that bore no resemblance to them. In the other‐representation condition, participants interacted with a representation of another individual. The experimental design was a 2 (Participant Gender) × 3 (Agent Identity: high‐similarity self‐representation vs. low‐similarity self‐representation vs. other representation). Overall, participants displayed more intimacy‐consistent behaviors for representations of themselves than others. Implications of using immersive virtual environment technology for studying the self are discussed.     

内隐学习中表征与意识的关系

近年来研究者分别从表征的质量和表征的外显等级两个方面探讨了内隐学习中表征与意识的关系。有关表征质量与意识的研究,清晰地揭示了影响表征进入意识的因素;而有关表征外显等级与意识的研究,则明确地阐明了什么样的表征才是有意识的。但表征与意识的关系是一个十分复杂的问题,目前仍存在着很大的争议,还有待于进一步的探讨     

Searching for target letters in memory: Individual preferences and instructions for text representation

Participants searched for target letters in a short passage held in memory. In Experiment 1, participants were divided into two groups on the basis of a retrospective report concerning the type of representation used to store the passage in memory, and in Experiment 2, participants were instructed concerning the form of memory representation to use. Only participants using a visual representation missed more targets in the wordthe than in other words. Participants instructed to form a visual representation also made fewer content-word or phrase substitutions when learning the passage than did participants instructed to form an auditory representation. These findings show that choice of memory representation is flexible and that the representation used influences what can be retrieved from memory.     

The role of goal representation in preschoolers' flexibility and inhibition

This study addressed the role of goal representation in preschoolers’ inhibition and flexibility performance. A total of 56 4- and 5-year-olds were tested in an adapted version of the Shape School task where the difficulty of goal representation was manipulated by varying the degree of transparency of task cues. The findings showed that both age groups’ performance in the flexibility phase was increased when demands on goal representation were alleviated by using transparent cues instead of arbitrary cues. Furthermore, 4-year-olds performed more accurately on go trials in the inhibition phase with transparent cues than with arbitrary cues. These results confirm the critical role of goal representation in flexibility and reveal its influence in inhibition contexts. Altogether, this study suggests that goal representation is a key element for efficient executive function across a variety of settings involving different executive functions.     

汉语双字词在心理词典中的表征方式:来自fNIRS的证据

以汉语双字构成的真词与假词为实验材料,22名大学生为被试,采用功能性近红外脑成像技术(f NIRS)和事件相关设计,考察被试在完成词汇判断任务时的大脑激活模式,探索汉语双字词在心理词典中的表征方式。结果发现:(1)在完成真假词判断任务时,被试大脑左侧额叶和左侧颞叶均被激活;(2)与判断假词相比,被试在判断真词时显著地激活左额上回和左额中回。这一结果说明汉语双字词在心理词典中是混合表征的。     

Representation of numerical and non-numerical order in children

The representation of numerical and non-numerical ordered sequences was investigated in children from preschool to grade 3. The child's conception of how sequence items map onto a spatial scale was tested using the Number-to-Position task (Siegler & Opfer, 2003) and new variants of the task designed to probe the representation of the alphabet (i.e., letter sequence) and the calendar year (i.e., month sequence). The representation of non-numerical order showed the same developmental pattern previously observed for numerical representation, with a logarithmic mapping in the youngest children and a shift to linear mapping in older children. Although the individual ability to position non-numerical items was related to the child's knowledge of the sequence, a significant amount of unique variance was explained by her type of number-line representation. These results suggest that the child's conception of numerical order is generalized to non-numerical sequences and that the concept of linearity is acquired in the numerical domain first and progressively extended to all ordinal sequences.     

具身化空间四卡问题解决的内容效应

利用三个实验探讨了左右、前后(实验1,2)具身化空间四卡问题解决的内容效应,同时探讨了条件推理后件类型(二分变量与连续性变量)对具身化内容效应的影响(实验3)。结果发现:(1)三个实验均表现出在自我参照空间四卡问题解决中,肯定前件和否定后件同时被选择的比率(P-Q)显著高于在经典四卡问题或环境参照空间四卡问题中P-Q卡被选择的比率,从而表现出四卡问题解决存在具身化内容效应;(2)具身化内容效应仅限于后件类型是二分变量的四卡问题;(3)在三个实验中被试均表现出"证真偏向"。具身化空间四卡问题解决的内容效应支持了条件推理领域特异性理论。