7~9岁儿童二级错误信念和失言理解的发展

采用二级错误信念任务、失言理解任务分别考察了90名7-9岁学龄儿童心理理论的发展。结果表明,7岁组儿童在二级错误信念和失言理解任务上的成绩与8岁组、9岁组存在显著差异,但8岁组和9岁组儿童之间没有显著差异,提示8岁可能是个体心理理论发展的又一个转折点。三组被试在二级错误信念理解上的成绩显著高于失言理解任务上的成绩,在控制年龄后,他们在两种心理理论任务上的成绩显著相关。另外,失言任务中三种心理状态理解的得分两两相关。综合以上结果,在学龄期,心理理论仍有质的发展,且心理理论的信念、情绪和意图等核心概念仍然相互关联。     

成年个体的心理理论与执行功能

为了说明成年个体心理理论与执行功能的发展及两者的关系,在匹配了智商和教育水平条件下,采用心理理论故事理解任务、失言理解任务和威斯康星卡片分类任务分别探察了30名62~77岁的老年人和30名19~25岁青年人的心理理论和执行功能。结果表明,老年人和青年人在2种心理理论任务上的得分与卡片分类任务的得分都不存在显著相关,老年人在失言任务上的得分显著低于青年人,在心理理论故事理解任务上和威斯康星卡片分类任务上,老年人的表现与青年人没有显著差异。结合已有的研究结果提示：心理理论与执行功能的相关模式在成年和学前阶段是不同的。     

执行功能与心理理论关系的元分析:抑制控制和灵活转换的作用

心理理论的发展对个体社会化具有重要意义。研究通过元分析的方法,表明执行功能能够有效预测个体心理理论的发展水平(r=0.37,p0.001),且具有跨文化和跨人群的稳定性;同时,在个体的毕生发展中,执行功能均与心理理论存在显著相关,证明了执行功能的表达说;但在不同的发展阶段(Q1=411.75,p10.001,df1=90;Q2=219.49,p20.001,df2=50),心理理论的发展会受到执行功能不同成分的影响:0~3岁时抑制控制起关键作用;3~12岁时,心理理论受到抑制控制和灵活转换的共同影响;青春期阶段,灵活转换的作用明显;而到了成年期,抑制控制与灵活转换均会对心理理论产生积极影响。     

学龄前留守儿童亲子依恋对执行功能的影响:祖孙依恋的调节作用和中介作用

本研究探究了学龄前留守儿童亲子依恋、祖孙依恋与执行功能之间的关系,并进一步分析了祖孙依恋的调节作用和中介作用。对155名南昌市农村地区的学龄前留守儿童及其父母亲和（外）祖父母进行研究,研究工具包括亲子依恋量表（Waters Attachment Q-sort Items）和执行功能任务组。结果表明：（1）学龄前留守儿童亲子依恋与祖孙依恋、执行功能子成分抑制控制呈显著正相关,祖孙依恋与执行功能子成分抑制控制和认知灵活性呈显著正相关;（2）祖孙依恋在亲子依恋对学龄前留守儿童执行功能子成分抑制控制的影响之间存在调节效应;（3）祖孙依恋在亲子依恋对学龄前留守儿童执行功能子成分抑制控制和认知灵活性的影响之间存在中介效应。结论是可通过改善亲子依恋和祖孙依恋的质量来促进儿童执行功能的发展。     

提供社会支持与心理幸福感的关系——自尊的中介作用

目的：初步探讨提供社会支持、自尊与心理幸福感的关系。方法：运用相关和回归分析法对自尊、提供社会支持和心理幸福感三个问卷调查结果进行处理。结果：提供社会支持总分分别与自尊、心理幸福感总分相关显著（r=0.46,P〈0.01;r=0.50,P〈0．01）;增加了自尊变量之后,提供社会支持对心理幸福感的标准回归系数（B）由0．503下降至0.306。结论：自尊是提供社会支持与心理幸福感的中介变量。     

回忆过去和想象将来时谈及他人与心理理论的关系

为考察心理理论与回忆过去、想象将来中内容的关系,153名青少年两周内完成了情景记忆和心理理论等任务。控制了智力、言语能力和执行功能后,线性回归分析发现青少年回忆过去和想象将来时“谈及他人”与心理理论有显著关联（Aajusted R^2=51．6％,F（9,143）=19．00,P〈0．001）,不同群体间心理理论的差异也可由其谈及他人数量不同来解释。结果提示。与西方谈论心理状态不同,中国文化下回忆过去和想象将来时“谈及他人”可能是促进心理理论发展的机制。     

7-11岁儿童心理状态信息理解与使用的发展特点及关系

采用失言任务和改进的说服任务考察了153名7-11岁儿童的心理理论理解和使用能力的发展状况。结果发现：儿童的失言理解能力和心理状态信息使用能力7-9岁时发展迅速,9岁后趋于稳定;两种能力的发展趋势基本一致,两者呈现中度相关;8-9岁是儿童失言理解和心理状态信息使用发展的转折点。结果表明：心理状态理解和使用的能力是儿童心理理论发展的重要组成部分,两者的发展基本同步。     

螺内酯治疗对轻度心力衰竭患者骨桥蛋白水平的影响

本研究选取2013年1月～2013年8月广东省韶关市铁路医院收治的轻度心力衰竭（左室射血分数〈40％,NYHAⅡ级）患者共65例,随机分为试验组（A组）和对照组（B组）,A组在常规基础治疗之上加用螺内酯（20rag、Qd）,B组采用常规基础治疗。于患者住院期间及出院后3个月抽血行EI。IsA法检测血清骨桥蛋白、NT—proBNP水平以及心脏超声检查测量左室舒张末内径（LVEDd）以及左室射血分数（LVEF）。结果显示：两组患者在年龄、性别、低密度脂蛋白等比较,差异无统计学意义（P〉0．05）。与治疗前比,治疗后两组患者血清骨桥蛋白、NT-proBNP水平、LVEDd均明显下降,差异均具有统计学意义（P〈0．05）,但试验组血清骨桥蛋白、NT—proBNP水平下降更明显,两组相比差异均具有统计学意义（P〈0．05）。治疗后,两组患者的LVEF均高于治疗前,但差异均无统计学意义（P〉0．05）。直线相关分析显示：血清骨桥蛋白水平与NT-proBNP水平呈正相关（r=0．235,P〈0．05）,与LVEDd呈正相关（r=0．432,P〈0．05）。提示在常规基础治疗上加用螺内酯可以改善轻度心力衰竭患者心室重构及骨桥蛋白的水平。     

儿童执行功能对数学能力的预测模型

使用数点数广度任务(C-span)、Stroop任务、威斯康星卡片分类任务(WCST)测查儿童的执行功能,用《小学儿童数学能力测查量表》(一年级)、《韦克斯勒儿童智力测量》分别测查儿童的数学能力和智力,对64名小学一年级儿童的执行功能(抑制、转换、刷新)和数学能力的关系进行了研究,相关分析和回归分析发现,数学能力与执行功能任务测量都有显著相关,抑制、转换和刷新都分别对数学能力存在显著回归效应;在此基础上,建立了执行功能及其对儿童数学能力的预测模型。结果表明,抑制控制、转换和刷新都能对数学能力产生直接影响,但抑制控制还通过转换和刷新对数学能力产生间接影响。说明儿童数学能力的认知差异,主要在于抑制控制能力的差异,而抑制控制的差异又导致转换和刷新能力表现的差异。     

5～8岁儿童失言探测与理解的发展特点

失言探测与理解是一种融入了人际互动,需要个体体会交往双方心理感受的高级心理理论任务.本研究采用图片-故事法探讨失言情境(他人对自我、自我对他人和他人对他人 )对5～8岁儿童失言探测与理解的影响.结果发现,7～8岁儿童基本拥有了失言探测与理解能力,6、7、8岁儿童在所有情境下失言探测和理解能力同步发展,而5岁儿童在他人对自我情境下失言探测与理解的成绩显著好于自我对他人情境下的成绩,提示失言探测与理解能力在不同阶段会表现出不同的发展特点.     

An attempt to discriminate different types of executive functions in the Wisconsin Card Sorting Test

This study examined the roles of the phonological working memory and the central executive in the Wisconsin Card Sorting Test by altering the materials and the procedure of the task and using a dual-task design, in which cognitive abilities of normal participants were manipulated by performance of the secondary tasks selectively taxing the phonological loop or the central executive. The present study used three novel versions of the Wisconsin Card Sorting Test, namely the WCST-4 stimuli, the WCST-12-stimuli, and the WCST-12-stimuli-box, in all of which the participants were given the exact sorting criterion. So the tasks did not involve processes such as maintenance of inferences about the sorting criterion which would require phonological memory load. However, the tasks were assumed to require the executive process of response inhibition. In the WCST-4-stimuli condition no change was made to the WCST materials. In the other two conditions, relying on the assumption that the three-dimensional nature of the cards triggers inappropriate responses, unidimensional stimulus cards were used instead of the four normal three-dimensional WCST stimulus cards. The difference between these two conditions was that, in the WCST-12-stimuli-box condition, boxes were used to conceal the response cards previously sorted. The results supported Dunbar and Sussman's (1995) argument that some executive processes in the Wisconsin Card Sorting Test require the use of phonological store, and the present design was able to differentiate the type of executive functions that do not involve the use of a phonological loop from the ones that do. In addition, the results concerning manipulations of the visual aspects of the Wisconsin Card Sorting Test suggest that the three-dimensional nature of the WCST stimulus cards leads to an increase in the number of inappropriate responses produced with the executive secondary task interference.     

Aging of theory of mind: The influence of educational level and cognitive processing

Previous studies of theory of mind (ToM) in old age have provided mixed results. We predicted that educational level and cognitive processing are two factors influencing the pattern of the aging of ToM. To test this hypothesis, a younger group who received higher education (mean age 20.46 years), an older group with an education level equal to that of the young group (mean age 76.29 years), and an older group with less education (mean age 73.52 years) were recruited. ToM tasks included the following tests: the second‐order false‐belief task, the faux‐pas task, the eyes test, and tests of fundamental aspects of cognitive function that included two background tests (memory span and processing speed) and three subcomponents of executive function (inhibition, updating, and shifting). We found that the younger group and the older group with equally high education outperformed the older group with less education in false‐belief and faux‐pas tasks. However, there was no significant difference between the two former groups. The three groups of participants performed equivalently in the eyes test as well as in control tasks (false‐belief control question, faux‐pas control question, faux‐pas control story, and Eyes Test control task). The younger group outperformed the other two groups in the cognitive processing tasks. Mediation analyses showed that difficulties in inhibition, memory span, and processing speed mediated the age differences in false‐belief reasoning. Also, the variables of inhibition, updating, memory span, and processing speed mediated age‐related variance in faux‐pas. Discussion focused on the links between ToM aging, educational level, and cognitive processing.     

The unity and diversity of executive functions and their contributions to complex "Frontal Lobe" tasks: a latent variable analysis

This individual differences study examined the separability of three often postulated executive functions-mental set shifting ("Shifting"), information updating and monitoring ("Updating"), and inhibition of prepotent responses ("Inhibition")-and their roles in complex "frontal lobe" or "executive" tasks. One hundred thirty-seven college students performed a set of relatively simple experimental tasks that are considered to predominantly tap each target executive function as well as a set of frequently used executive tasks: the Wisconsin Card Sorting Test (WCST), Tower of Hanoi (TOH), random number generation (RNG), operation span, and dual tasking. Confirmatory factor analysis indicated that the three target executive functions are moderately correlated with one another, but are clearly separable. Moreover, structural equation modeling suggested that the three functions contribute differentially to performance on complex executive tasks. Specifically, WCST performance was related most strongly to Shifting, TOH to Inhibition, RNG to Inhibition and Updating, and operation span to Updating. Dual task performance was not related to any of the three target functions. These results suggest that it is important to recognize both the unity and diversity of executive functions and that latent variable analysis is a useful approach to studying the organization and roles of executive functions.     

Updating information in verbal working memory and executive functioning

50 older adults (M age=77.9 yr., SD=7.3; 35 women and 15 men) were tested using the updating working-memory task. They were also given the neuropsychological Wisconsin Card Sorting Test, assumed to evaluate executive functioning and the frontal cortex. A factor analysis with age, education, and verbal ability partialled out was computed on the updating task outcomes and resulted in a two-factor solution, indicating that this task requires two independent processes, interpreted as reflecting a storage component and an updating component. Partial correlations with age, education, and verbal ability partialled out indicated that Wisconsin Card Sorting Test measures were significantly associated with the factor supposed to reflect the updating process. Such results appeared consistent with the model of working memory with a central executive system involved in the updating process and related to the executive-frontal functioning, and a phonological loop system involved in the storage of verbal information and not linked to executive-frontal functions.     

Differential contributions of set-shifting and monitoring to dual-task interference

It is commonly argued that complex behaviour is regulated by a number of “executive functions”, which work to coordinate the operation of disparate cognitive systems in the service of an overall goal. However, the identity, roles, and interactions of specific putative executive functions remain contentious, even within widely accepted tests of executive function. The authors present two experiments that use dual-task interference to provide further support for multiple distinct executive functions and to establish the differential contributions of those functions in two relatively complex executive tasks—random generation and the Wisconsin Card Sorting Test. Results are interpreted in terms of process models of the complex executive tasks.     

Executive Functions in Dyslexia

This study focused on executive functions in dyslexia. A group of 43 heavily-affected young dyslexics, divided into two groups based on the results of a receptive language test, and 20 non-dyslexic controls, were tested with a Dichotic Listening Test, the Stroop Color Word Test and the Wisconsin Card Sorting Test. The dyslexic subjects demonstrated significant impairment on all tasks, but with different patterns of impairment according to the subgrouping. The subgroups were equally impaired on the Dichotic Listening Test, but differed on the Stroop and the Wisconsin Tests. The data support a hypothesis suggesting executive problems in dyslexia, depending on receptive language skills.     

Executive functions in dyslexia.

This study focused on executive functions in dyslexia. A group of 43 heavily-affected young dyslexics, divided into two groups based on the results of a receptive language test, and 20 non-dyslexic controls, were tested with a Dichotic Listening Test, the Stroop Color Word Test and the Wisconsin Card Sorting Test. The dyslexic subjects demonstrated significant impairment on all tasks, but with different patterns of impairment according to the subgrouping. The subgroups were equally impaired on the Dichotic Listening Test, but differed on the Stroop and the Wisconsin Tests. The data support a hypothesis suggesting executive problems in dyslexia, depending on receptive language skills.     

Differential contributions of set-shifting and monitoring to dual-task interference

It is commonly argued that complex behaviour is regulated by a number of "executive functions", which work to coordinate the operation of disparate cognitive systems in the service of an overall goal. However, the identity, roles, and interactions of specific putative executive functions remain contentious, even within widely accepted tests of executive function. The authors present two experiments that use dual-task interference to provide further support for multiple distinct executive functions and to establish the differential contributions of those functions in two relatively complex executive tasks-random generation and the Wisconsin Card Sorting Test. Results are interpreted in terms of process models of the complex executive tasks.     

The development of executive functioning and theory of mind. A comparison of Chinese and U.S. preschoolers

Preschoolers' theory-of-mind development follows a similar age trajectory across many cultures. To determine whether these similarities are related to similar underlying ontogenetic processes, we examined whether the relation between theory of mind and executive function commonly found among U.S. preschoolers is also present among Chinese preschoolers. Preschoolers from Beijing, China (N= 109), were administered theory-of-mind and executive-functioning tasks, and their performance was compared with that of a previously studied sample of U.S. preschoolers (N= 107). The Chinese preschoolers outperformed their U.S. counterparts on all measures of executive functioning, but were not similarly advanced in theory-of-mind reasoning. Nonetheless, individual differences in executive functioning predicted theory of mind for children in both cultures. Thus, the relation between executive functioning and theory of mind is robust across two disparate cultures. These findings shed light on why executive functioning is important for theory-of-mind development.