加法运算中数学知识和语义知识的整合

采用语义启动数字匹配任务及其变式, 探讨在中文背景下“和效应”和语义系统的类比一致性及其产生机制。结果发现, 中国学生对“和”目标数字的反应时显著长于对中性目标数字, 表明“和效应”是人类的一种强烈的认知倾向; 人类通过类比映射方式整合数学知识和语义知识; 影响语义加工的因素同样影响数学认知。研究还发现, 被试对中性目标数字的抑制难度受语义匹配任务性质的影响, 在完成类别不一致的探测词匹配任务时, 拒绝中性目标数字的反应时显著长, “和效应”消失, 表明“和效应”不仅源自于对“和”目标数字的激活, 也源自于对中性目标数字的抑制。     

Transfer Effects in Children's Recall of Arithmetic Facts

Predictions of the Identical Elements (IE) model of arithmetic fact representation (Rickard, 2005 Rickard, T. C. 2005. A revised identical elements model of arithmetic fact representation. Journal of Experimental Psychology: Learning, Memory, and Cognition, 31: 250–257. [Crossref], [PubMed], [Web of Science ®] , [Google Scholar]; Rickard & Bourne, 1996 Rickard, T. C. and Bourne, L. E. 1996. Some tests of an identical elements model of basic arithmetic skills. Journal of Experimental Psychology: Learning, Memory, and Cognition, 22: 1281–1295. [Crossref], [PubMed], [Web of Science ®] , [Google Scholar]) about transfer between arithmetic facts were tested in primary school children. The aim of the study was to test whether the IE model, constructed to explain adult performance, also applies to children. The IE model predicts no positive transfer when the numerical elements of a test problem do not match exactly with those of a practice problem. In two experiments, children practiced addition or multiplication problems. A large positive transfer effect was found for problems with an operand order change; improvement was just as high as for practiced problems. Smaller transfer effects were found for problems where one operand was increased with one unit and for problems with operands more different from practice problems. Analogous results were found for addition and multiplication, suggesting that storage and retrieval processes in both domains are similar in children. The findings suggest that there is a gradual decrease in transfer as the test problems become more different from practice problems, indicating that a more sophisticated model than the IE model is needed to explain transfer effects in children's recall of arithmetic facts.     

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。     

关于数学应用题心理表征策略的新理论

本文主要阐述了数学应用题心理表征中的两种策略一直接转换策略和问题模型策略,介绍了两种策略的认知过程,并对两种策略的区分方法进行了探讨,最后总结说明了研究数学心理表征在理论和实践中的意义。     

视觉工作记忆中注意模板的表征—来自EROS的证据

采用事件相关光信号技术,分析再认任务和搜索任务下脑区的动态激活,探讨视觉工作记忆中注意模板的表征机制。实验要求被试在记忆项目后,分别完成再认任务和搜索任务。结果发现,与再认任务相比,视觉搜索任务下记忆项诱发前额叶、枕叶更高程度的激活,且前额叶的激活增强早于枕叶。研究表明,与用于再认任务的普通记忆项相比,用于视觉搜索任务的注意模板的潜在表征机制可能是：先激活前额叶以增强注意控制,并对枕叶的活动加以调节,增强注意模板表征的复述。     

工作记忆表征引导视觉注意选择的眼动研究

工作记忆表征能否引导视觉注意选择？目前实验结果尚不一致。有研究者认为能否观察到注意引导效应取决于视觉搜索类型。研究采用工作记忆任务与视觉搜索任务相结合的双任务范式, 结合眼动追踪技术, 对不同视觉搜索类型下的注意引导效应进行验证。实验1结果发现, 不管视觉搜索任务的靶子是否变化, 在早期的眼动指标上都发现了显著的注意引导效应, 但注意引导效应在靶子固定的视觉搜索任务下表现得更强。实验2在平衡两种视觉搜索任务中的工作记忆负载后发现, 两种视觉搜索任务下都出现了显著的注意引导效应, 但没有发现实验1中所出现的任务间差异。实验结果否定了视觉搜索类型对注意引导效应的决定性影响, 同时也提示工作记忆负载可能在注意引导效应中起重要作用。     

工作记忆子成分在听觉障碍儿童心算过程中的作用

采用2×2×3的混合实验设计,比较听力正常儿童和听觉障碍儿童在心算作业上的差异,考察了工作记忆子成分在听觉障碍儿童心算过程中的作用。结果表明,与听力正常儿童相比,听觉障碍儿童在高存储负载水平下的心算成绩显著降低,说明语音回路负责心算过程中的存储成分;而且听觉障碍儿童在对中央执行能力有高需求的实验条件下的作业水平并不比正常听力儿童差,说明他们的中央执行能力并没有受到损失。     

Scheduling Processes in Working Memory: Instructions Control the Order of Memory Search and Mental Arithmetic

Humans must often use working memory to execute processes one at a time because of its limited capacity. Two experiments tested where limits in access to working memory occur. Subjects searched a short-term memory set for one stimulus digit and performed mental arithmetic with another stimulus digit. In one experiment, they were told to carry out the mental arithmetic before the memory search and to make the arithmetic response first. In the other, they were instructed to perform the tasks in the opposite order. The overt responses were executed in the prescribed order. Moreover, the covert working memory processes were executed in the prescribed order, as revealed by a critical path network analysis of reaction times. Results are explained in terms of a double-bottleneck model in which central processes and responses are constrained to be carried out for one task at a time.     

The Course of Representation in Memory During the Comprehension of Paragraphs

The course of the representation built in memory from a text during comprehension of paragraphs was studied by a probe technique (immediate item recognition). Three experiments showed that response times, the main variable, gradually increase as a function of the lag between the probe (a word or an atomic proposition) and its target in the text. In Experiment 3 the same result was also found with a priming technique. The absence of any kick-up over the course of time was confirmed by several additional analyses of individual data. The results were only weakly consistent with models assuming two distinct memory stores, in particular a specific “short-term memory store,” but highly consistent with models involving semantic activation and subsequent gradual deactivation.     

The Effect of Morphological Complexity on Verbal Working Memory: Results from Arabic Speaking Children

To examine the role of morphology in verbal working memory. Forty nine children, all native speakers of Arabic from the same region and of the same dialect, performed a Listening Word Span Task, whereby they had to recall Arabic uninflected words (i.e., base words), inflected words with regular (possessive) morphology, or inflected words with irregular (broken plural) morphology. Each of these words was at the end of a sentence (henceforth, target word). The participant’s task was to listen to a series of sentences and then recall the target words. Recall of inflected words was significantly poorer than uninflected words, and recall of words with regular morphology was significantly poorer than recall of words with irregular morphology. These findings, albeit preliminary, suggest a role of morphology in verbal working memory. They also suggest that, at least in Arabic, regular morphological forms are decomposed into their component elements and hence impose an extra load on the central executive and episodic buffer components of working memory. Furthermore, in concert with findings from other studies, they suggest that the effect of morphology on working memory is probably language-specific. The clinical implications of the present findings are addressed.     

自我概念长时记忆表征的性别特征:自我参照实验范式的检验

记忆的自我参照效应实验范式,常被用来探讨自我概念长时记忆表征问题。不同于以往研究,本研究将作为记忆材料的人格词汇区分为两种性别特征,以此来探讨自我概念长时记忆表征的性别化问题。实验设计为2(被试:男性与女性)×2(编码方式:自我参照编码与语义编码)×2(记忆项目类别:男性特征人格词汇与女性特征人格词汇)的混合因素设计。首先,实验结果进一步验证了自我参照效应的存在。其次,研究发现男性被试对于男性特征人格词汇的自我参照效应,显著高于女性特征人格词汇;女性被试的情况正好相反。实验结果表明,自我概念长时记忆表征系统对那些与自我性别相一致的人格特征词汇有比较好的组织编码形式,反映出自我对性别的认同。     

视觉与言语工作记忆表征对视觉注意的引导

通过三个实验,探讨不同时间进程下视觉和言语工作记忆表征对视觉注意的引导。实验1采用注意引导与注意探测任务同时呈现的范式,探讨不同记忆项与注意项时间间隔(SOA)条件下言语工作记忆表征对视觉注意的引导。结果发现,当SOA较短时言语工作记忆表征对视觉注意有引导效应,而SOA较长时未观察到引导效应;实验2、3采用注意引导任务与注意探测任务分离范式,分别探讨在不同SOA条件下言语和视觉工作记忆表征对视觉注意的引导。结果发现,不同SOA条件下言语和视觉工作记忆表征均能引导视觉注意。研究表明,不同实验范式对言语工作记忆表征对视觉注意的引导有明显影响,视觉比言语工作记忆表征能在更广泛条件下引导视觉注意。     

数学焦虑对工作记忆子系统及数学心算的影响分析

本研究从工作记忆容量的角度入手,探讨数学焦虑对工作记忆子系统及数学心算成绩的影响,并寻求三者之间关系的理论解释。本研究为3×2×2混合实验设计,即三组被试（高、中、低数学焦虑组）、工作记忆两个子系统（言语工作记忆和视空间工作记忆）和两种数学心算任务难度,并记录数学心算的反应时和正确率作为其成绩指标。结果表明在要求较高工作记忆容量的数学心算任务中,数学焦虑通过言语工作记忆和视空间工作记忆都会对数学心算成绩产生影响,其中视空间工作记忆是数学焦虑与复杂数学心算反应时之间的中介变量。     

Continuity in Representation Between Children and Adults: Arithmetic Knowledge Hinders Undergraduates' Algebraic Problem Solving

This study examined if solving arithmetic problems hinders undergraduates' accuracy on algebra problems. The hypothesis was that solving arithmetic problems would hinder accuracy because it activates an operational view of equations, even in educated adults who have years of experience with algebra. In three experiments, undergraduates (N = 184) solved addition facts or participated in one of several control conditions. Those who solved addition facts were less likely to solve prealgebra equations (e.g., 6 + 8 +4 = 7 + __) correctly under speeded conditions. In a fourth experiment, the negative effects of solving arithmetic problems extended to undergraduates (N = 74) solving algebra problems with no time pressure. Taken together, results suggest that arithmetic activates knowledge that hinders performance on algebra problems. Thus, an operational view of equations, which is prevalent in children, does not seem to be revised or abandoned, even after years of experience with algebra.     

从表征和认知过程上看表象与知觉、记忆的关系

表象、知觉和记忆是一个整合的认知系统。由于知觉和记忆提供了表象生成的材料,因而三者共享相似的表征,并激活广泛而相似的脑区。然而在认知加工过程上三者存在一定的差异。与知觉相比,表象的编码方式更抽象、更依赖过去经验的参与且处理细节能力更弱;与记忆相比,表象更容易受无关信息的干扰。未来对三者关系的研究应关注不同来源和不同类型的表象与知觉、记忆之间的关系,以及工作记忆在三者关系中所起的作用。     

The Cognitive Demands of Gait Retraining in Runners: An EEG Study

Abstract

High impact forces during running have been associated with tibial stress injuries. Previous research has demonstrated increasing step rate will decrease impact forces during running. However, no research has determined the cognitive demand of gait retraining. The primary purpose was to determine the cognitive demand and effectiveness of field-based gait retraining. We hypothesized that in-field gait retraining would alter running mechanics without increasing cognitive workload as measured by EEG following learning. Runners with a history of tibial injury completed a gait retraining protocol which included a baseline run, retraining phase, practice phase, and re-assessment following retraining protocol. Results demonstrated an increase in the theta, beta, and gamma power within prefrontal cortex during new learning and corresponding return to baseline following skill acquisition and changes across alpha, beta, gamma, mu, and theta in the motor cortex (p < .05). In the midline superior parietal cortex, spectral power was greater for theta activity during new learning with a corresponding alpha suppression. Overall, the results demonstrated the use of EEG as an effective tool to measure cognitive demand for implicit motor learning and the effectiveness of in-field gait retraining.     

Memory for Patient Information as a Function of Experience in Mental Health

Mental health clinicians are tasked to diagnose and treat the millions of people worldwide seeking help for mental health issues. This paper investigates the memory clinicians have for patient information. We hypothesize that clinicians encapsulate mental health knowledge through experience into more abstract concepts, as in other domains changing what clinicians remember about patients compared with non‐professionals. We tested memory for realistic patient–therapist interactions in experienced clinicians, intermediately trained graduate students, and laypeople. Clinicians recalled fewer facts than intermediate trainees and as many as laypeople. Furthermore, clinicians reported more abstracted information than all other participants, providing the first empirical demonstration of knowledge encapsulation in the memory of mental health clinicians. We discuss how our results fit into the existing literature on clinical expertise in mental health and the implications of our findings for future research relevant to mental health care. Copyright © 2012 John Wiley & Sons, Ltd.     

归因训练在精神卫生领域的应用

归因训练是一种从归因方式入手对认知、情绪和行为问题进行治疗的认知行为治疗方法。综述了归因方式在精神分裂症、神经症、物质滥用、生理心理问题及家庭暴力等精神卫生领域中的作用,以期对归因训练在相关领域的应用提供新的思路。