Core information processing deficits in developmental dyscalculia and low numeracy

There are two different conceptions of the innate basis for numerical abilities. On the one hand, it is claimed that infants possess a 'number module' that enables them to construct concepts of the exact numerosities of sets upon which arithmetic develops (e.g. Butterworth, 1999; Gelman & Gallistel, 1978). On the other hand, it has been proposed that infants are equipped only with a sense of approximate numerosities (e.g. Feigenson, Dehaene & Spelke, 2004), upon which the concepts of exact numerosities are constructed with the aid of language (Carey, 2004) and which forms the basis of arithmetic (Lemer, Dehaene, Spelke & Cohen, 2003). These competing proposals were tested by assessing whether performance on approximate numerosity tasks is related to performance on exact numerosity tasks. Moreover, performance on an analogue magnitude task was tested, since it has been claimed that approximate numerosities are represented as analogue magnitudes. In 8-9-year-olds, no relationship was found between exact tasks and either approximate or analogue tasks in normally achieving children, in children with low numeracy or in children with developmental dyscalculia. Low numeracy was related not to a poor grasp of exact numerosities, but to a poor understanding of symbolic numerals.     

技能学习与重复启动基本机制问题的探讨

关于技能学习与重复启动的基本机制问题在学术界存有很大的争议．对其进行探讨将会对从整体上考察程序性记忆的性质产生重要的影响。此文主要从函数形式、相关性和增减模式的理论分析,数字输入任务的计算模型．程序性记忆和学习的观点几个方面探讨了有关问题,说明技能学习与重复启动是程序性记忆的不同表现形式,它们有着相同的基本机制。     

测验方式对内隐规则提取的影响

研究以异或规则为实验材料,在弱化相邻组块和样例相似性的条件下,采用单因素(测验任务:分类测验、再认测验和预测测验)的实验设计探讨内隐知识的内容以及测验方式对内隐规则提取的影响.结果表明:(1)异或规则的内隐学习效应发生;(2)内隐规则的提取不受测验方式的影响,在内隐规则的提取时表现出一定的稳定性和抗干扰性.     

Gray matter and intelligence factors: Is there a neuro-g?

Heterogeneous results among neuro-imaging studies using psychometric intelligence measures may result from the variety of tests used. The g-factor may provide a common metric across studies. Here we derived a g-factor from a battery of eight cognitive tests completed by 6929 young adults, 40 of whom also completed structural MRI scans. Regional gray matter (GM) was determined using voxel-based-morphometry (VBM) and correlated to g-scores. Results showed correlations distributed throughout the brain, but there was limited overlap with brain areas identified in a similar study that used a different battery of tests to derive g-scores. Comparable spatial scores (with g variance removed) also were derived from both batteries, and there was considerable overlap in brain areas where GM was correlated to the respective spatial scores. The results indicate that g-scores derived from different test batteries do not necessarily have equivalent neuro-anatomical substrates, suggesting that identifying a “neuro-g” will be difficult. The neuro-anatomical substrate of a spatial factor, however, appears more consistent and implicates a distributed network of brain areas that may be involved with spatial ability. Future imaging studies directed at identifying the neural basis of intelligence may benefit from using a psychometric test battery chosen with specific criteria.     

Shaping feelings in cyberspace: The case of Chinese seafarer-partners

Research has shown that expressing feelings online is subject to feeling rules much like those that govern offline environments. ‘Expressing feelings’, however, is different from ‘feeling feelings’. Does emotional interaction online change how individuals feel and, if so, in what ways? This paper addresses the question by examining a group of Chinese seafarer-partners' activities in an online group. Drawing upon emotion management theory, this paper shows that seafarer-partners in the group helped each other to reframe negative experiences in positive ways in order to suppress unpleasant feelings. It also reveals a corollary process of online emotion-shaping, namely, boosting positive feelings, by drawing upon the concept of collective effervescence. Both processes served to make seafarer-partners feel positive about their relationships. This paper thus extends previous research findings by demonstrating that online support also serves to shape how individuals feel and does so through two processes.     

如何正确对待西方"马克思学"?——以西方"马克思学"文本学成果在中国的接受为例

MEGA版的<马克思恩格斯全集>和西方"马克思学"都是在上世纪七八十年代进入中国并为学界所关注的.近些年来,随着对马克思恩格斯文本关注的持续升温,国内学界对待MEGA版及西方"马克思学"的态度出现了一些新的变化,并逐渐形成了三种较为典型的倾向:一种是仍旧漠视西方"马克思学"和MEGA的研究成果,闭门造车;一种是携洋自重,只重文献而忽视了理论的自省,对二者不加区别;另一种则是学界在对待MEGA版及西方"马克思学"问题上的正确立场、态度.对这三种倾向态度的分析有利于我们正确地对待西方"马克思学"及其研究成果.     

家兔具有分辨红绿的色觉行为

本文在11只上海家免上进行了色觉行为学的实验研究。通过限制方位、光强等可能成为条件刺激的因素,并排除了声音、气味、背景光刺激等的干扰,确保颜色成为唯一的条件刺激,建立食物性红绿色觉分辨条件反射。经过适应、筛选、驯练和测试,在家兔上建立了对绿光稳固的条件反射。该结果显示兔具有颜色分辨能力。     

The psychology behind the masks: Psychological responses to the severe acute respiratory syndrome outbreak in different regions

Severe acute respiratory syndrome (SARS) was first reported in China, and spread to 29 regions, affecting over 8000 people worldwide. For the general public, the psychological impact of SARS may have been greater than the physical health danger of the disease. The present paper proposes the influence of psychological factors on people's cognitive, affective, and behavioral responses during the SARS outbreak. The various papers in this special issue of the Journal reveal how people have reacted during the SARS outbreak: People's general coping styles may be related to their health behavior during the outbreak. Cultural differences were evident in the perception of SARS, and individuals' perceptual styles may have influenced their ability to cope with the outbreak. The way in which individuals coped with SARS-related stressful events was different from their usual practices of managing daily stress. Individual differences in the adoption of preventive measures were related to the distinct susceptibility to several social-cognitive biases.