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911.
Two nonverbal representation systems, the analog magnitude system (AMS) and the object tracking system (OTS), have been proposed to explain how humans and nonhuman animals represent numerosities. There has long been debate about which of the two systems is responsible for representing small numerosities (<4). This review focuses on findings with human infants to inform that debate. We argue that the empirical data cannot all be explained by a single system, and in particular, infants’ failures to compare small and large numerosities – the boundary effect – undermines the claim that the AMS can account for infants’ numerical abilities in their entirety. We propose that although the two systems coexist throughout the lifespan, competition between the systems is primarily a developmental phenomenon. Potential factors that drive the engagement of each system in infancy, such as stimulus features and task demands, are discussed, and directions for future research are suggested.  相似文献   
912.
回顾性研究301例中枢神经系统感染病例的临床资料,分析其临床特点,将符合临床诊断标准的病例按病原种类分为病脑组、结脑组、化脑组及隐脑组4个组,应用相关的统计描述分析其临床特征。结果发现病毒性脑(膜)炎是最常见的中枢神经系统感染性疾病,而中枢神经系统感染性疾病一年四季均可发病,其中病毒性脑(膜)炎高发于5月及7月,结核性脑膜炎则高发于1月与3月,有明显的季节性。中枢神经系统感染的临床首发症状依次表现为发热、头痛、意识障碍、精神症状、抽搐及神经系统定位症状。  相似文献   
913.
为探讨新形势下农村医疗救助制度目标机制的设计,提高制度靶向的准确性及效果,利用定性分析方法,结合医疗救助制度的功能分析,对现阶段该制度的目标对象及纳入依据进行了分析.研究认为,农民的医疗需求具有必需品性质,救助的水平以新农合为基本依托,同时,农村城镇化发展带来新的弱势人群的医疗保障问题提示,需因时、因地、因阶段设计医疗救助制度目标人群的纳入机制,提出按城乡划分、按阶层划分、按收入划分作为目标机制设计的依托是解决当前农村救助制度不公平问题的有效方式.  相似文献   
914.
制度与制度之间常常存在挤出效应,在医疗卫生服务制度体系内,价格管制、支付制度和医疗卫生服务评价制度等,造成了对中医药政策和中医药应用的挤出.而中医药在我国医改战略转型、医学模式转变和促进制度创新方面具有十分积极的意义.制度耦合是解决制度冲突、制度挤出的基本思想,把中西医统一到卫生事业发展的目标上来,把发挥中医药优势和特色作为中医药政策的核心,构建中西医并重的机制、优化医疗卫生服务制度结构和完善中医药评价体系,是缓解挤出效应,促进中医药发展的制度选择.  相似文献   
915.
The approximate number system (ANS) theory suggests that all magnitudes, discrete (i.e., number of items) or continuous (i.e., size, density, etc.), are processed by a shared system and comply with Weber's law. The current study reexamined this notion by comparing performance in discrete (comparing numerosities of dot arrays) and continuous (comparisons of area of squares) tasks. We found that: (a) threshold of discrimination was higher for continuous than for discrete comparisons; (b) while performance in the discrete task complied with Weber's law, performance in the continuous task violated it; and (c) performance in the discrete task was influenced by continuous properties (e.g., dot density, dot cumulative area) of the dot array that were not predictive of numerosities or task relevant. Therefore, we propose that the magnitude processing system (MPS) is actually divided into separate (yet interactive) systems for discrete and continuous magnitude processing. Further subdivisions are discussed. We argue that cooperation between these systems results in a holistic comparison of magnitudes, one that takes into account continuous properties in addition to numerosities. Considering the MPS as two systems opens the door to new and important questions that shed light on both normal and impaired development of the numerical system.  相似文献   
916.
This contribution compares entries on Friedrich Froebel and the kindergarten in German and United States histories of education from 1857 to 1933. In the American histories, Froebel appears as the great hero of education of the 19th century, whereas in the German histories, Pestalozzi is the hero. This difference in the perspectives goes back to fundamental differences in the political culture and political traditions of the two countries, which differed greatly as to the shaping of the public and private spheres. Consequently, there were also different views on public education. In the immigration society of the United States, it was important to integrate children with various language and cultural backgrounds. As families could not do this alone, public kindergartens were needed. In Germany, in contrast, Froebels idea of the kindergarten was seen as an attack on family ties, and Pestalozzi was highly esteemed, because he made home education central. The American interest in making citizens produced Froebel as the hero; the German interest in leaving the education of young children to mothers and in the family lauded Pestalozzi. This case study of the reception of Froebel in Germany and the United States illustrates the high context-dependence of the construction of educational heroes.  相似文献   
917.
Recurring auditory experience in the 28- to 34-week-old fetus   总被引:2,自引:0,他引:2  
This study describes the influence of recurring auditory experience on the fetus during a transitional time period in neurobehavioral development (28-34 weeks gestation). Findings demonstrate that fetal responding can be influenced by earlier experiences and that this effect is potentially influenced by maturity of the autonomic nervous system.  相似文献   
918.
Participants were required to detect spot stimuli briefly presented to the upper, central, or lower visual fields. The stimuli were presented either on a green or a red background. Results showed that reaction time (RT) was shorter for the lower visual field (LVF) compared to the upper visual field (UVF). Furthermore, this LVF advantage was significantly reduced in the red background condition compared to the green one. A red light is known to suppress activity of the magno-dominated stream. Therefore, the LVF advantage in RT can be explained as resulting from the biased representation of the magno-dominated stream in the LVF.  相似文献   
919.
William James's essay The Will to Believe proposed that we are sometimes justified, even obligated, to believe from our strong emotional or passional nature that something is true, even though there may not be total logical, evidential proof—which he also wrote is not to be found in this world. This essay explores situations, using a recent dear-death experience (NDE) example, in which there are reasonable evidence and logic, and yet belief seems to be withheld. I postulate and discuss nonrational influences producing resistance to belief, including the fear of being in error, the fear of rejection from the scientific community, irrational requirements of logicality, avoidance of consequences, and paradigm fixation. I also discuss issues in philosophy of science and epistemology in regard to proof.  相似文献   
920.
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