Restrictions in means for suicide: an effective tool in preventing suicide: the Danish experience

Restriction of means for suicide is an important part of suicide preventive strategies in different countries. The effect on method-specific suicide rate and overall suicide rate of restrictions on availability of carbon monoxide, barbiturates, and dextropropoxyphene was examined. From 1970 to 2000, overall suicide mortality and method-specific suicide mortality in Denmark were compared with official information about availability of barbiturates and analgesics and carbon monoxide in vehicle exhaust and household gas. Restrictions on availability of household gas with carbon monoxide content and barbiturates was associated with a decline in the number of suicides and suicides by self-poisoning with these compounds after controlling for the effect of calender year. Restricted access occurred concomittantly with a 55 percent decrease in suicide rate.     

Dynamic self-organization and early lexical development in children

In this study we present a self-organizing connectionist model of early lexical development. We call this model DevLex-II, based on the earlier DevLex model. DevLex-II can simulate a variety of empirical patterns in children's acquisition of words. These include a clear vocabulary spurt, effects of word frequency and length on age of acquisition, and individual differences as a function of phonological short-term memory and associative capacity. Further results from lesioned models indicate developmental plasticity in the network's recovery from damage, in a non-monotonic fashion. We attribute the network's abilities in accounting for lexical development to interactive dynamics in the learning process. In particular, variations displayed by the model in the rate and size of early vocabulary development are modulated by (a) input characteristics, such as word frequency and word length, (b) consolidation of lexical-semantic representation, meaning-form association, and phonological short-term memory, and (c) delayed processes due to interactions among timing, severity, and recoverability of lesion. Together, DevLex and DevLex-II provide an accurate computational account of early lexical development.     

Self-efficacy and work-related performance: the integral role of individual differences

The present study estimated the unique contribution of self-efficacy to work-related performance controlling for personality (the Big 5 traits), intelligence or general mental ability, and job or task experience. Results, based on a meta-analysis of the relevant literatures, revealed that overall, across all studies and moderator conditions, the contribution of self-efficacy relative to purportedly more distal variables is relatively small. Within moderator categories, there were several cases in which self-efficacy made unique contributions to work-related performance. For example, self-efficacy predicted performance in jobs or tasks of low complexity but not those of medium or high complexity, and self-efficacy predicted performance for task but not job performance. Overall, results suggest that the predictive validity of self-efficacy is attenuated in the presence of individual differences, though this attenuation does depend on the context.     

21世纪医疗保障制度改革与发展趋势管窥

21世纪的医疗保障制度改革与发展主要表现为:在理论上,强调医疗保障是人权的基本内容;在保障的对象上强调全民性和公平性;在保障的内容上更加重视预防保健;在医疗保障的运行机制上,强调政府主导与市场机制相结合;在服务模式方面,积极构建多层次网络化的社区卫生服务体系,推行医疗适宜技术;在筹资模式上,更注意建立以政府投入为主导的多元化筹资机制.     

Do the Predictors of Child Conduct Problems Vary by High- and Low-Levels of Socioeconomic and Neighborhood Risk?

This review seeks to examine whether the existing literature on child conduct problems (CP) supports the notion that certain CP risk factors vary in their importance across disadvantaged and better-off environments. Disadvantaged environments are represented by socioeconomic and/or neighborhood risk (SN risk) in this review. Three types of studies were reviewed: behavioral genetic studies that compare the importance of genetic and environmental influences on CP for youth from poor homes and/or disadvantaged communities versus youth from better-off contexts, studies that examine how SN risk and other CP risk factors interact, and studies that compare the antecedents for CP across levels of SN risk. Findings were inconsistent about the manner in which individual child risk factors interact with SN risk. However, familial risk factors were generally found to be of greater importance for youth from poor families and disadvantaged communities, particularly parental supervision. Most of the studies that indicated otherwise focused on physical discipline, or were limited to children from disadvantaged and extremely deprived environments. The findings suggest that in extremely deprived environments, familial influences are overwhelmed by the pervasiveness of other CP risk factors such as deviant peers. Implications for intervention and suggestions for future research are discussed.     

围棋活动对儿童注意力的影响

本研究选取852名被试,引人组别变量(下围棋组、对照组),探讨了下围棋对儿童注意力的影响.结果显示:(1)下围棋对儿童注意力具有积极影响,主要集中在稳定性、集中性和可持续性上;(2)进一步的性别、年级分析发现,性别主效应不显著,这说明男女在围棋活动前后没有显著性差异.年级主效应显著,表明一年级、五年级和八年级的注意力具有显著性差异,这是由于随着年龄的增长,儿童的注意力逐渐提升的缘故.     

增加样例学习中认知负荷的研究及思考

样例学习研究的一个重要取向:基于认知负荷理论.文章主要基于国外相关的研究文献,首先简述样例学习与认知负荷理论的关系,然后梳理增加样例学习中有效负荷研究概况与趋势,最后就有关研究问题作了进一步思考.     

窄记忆和宽知识——外在论和自我知识相容性问题的一个解决方案

The development of the semantic externalism in the 1970s was followed by a debate on the compatibility of externalism and self-knowledge. Boghossian’s memory argument is one of the most important arguments against the compatibilist view. However, some compatibilists attack Boghossian’s argument by pointing out that his understanding of memory is internalistic. Ludlow and others developed the externalist view of memory to defend the compatibility of externalism and self-knowledge. However, the externalist view of memory undermines the epistemic status of memory since it gives memory a burden that is too heavy for it to carry. This paper argues that only if we take the content of memory to be narrow and take that of self-knowledge to be wide and replace Cartesian self-knowledge with contextually constrained self-knowledge, can the compatibility of externalism and self-knowledge be effectively defended.     

参照群体类型与自我—品牌联系

自我－品牌联系(Self-brand Connection)指消费者使用某品牌构建、强化和表达自我的程度。研究参照群体的类型对消费者的自我－品牌联系的影响。研究结果表明：三种非成员群体对自我－品牌联系的影响是不同的,消费者会使用品牌形象与渴望群体一致的品牌来表明自己是什么类型的人,也会使用品牌形象与规避群体相悖的品牌来表明自己不是什么类型的人;消费者对成员群体的情感承诺程度会调节成员群体对自我－品牌联系的影响,情感承诺度高、中的成员群体比情感承诺度低的成员群体对自我－品牌联系的影响更大     

经验医学与腰椎间盘突出症的认知史

众所周知,腰椎间盘突出症是一种脊柱退变性疾病.本病的发现历史只有70多年,但它的存在历史却至少有几千年了.本文从有记载开始的古代文明回顾了腰椎间盘突出症的存在和发现过程,特别强调经验医学在疾病认知过程中的重要作用.本文还重点提出当代保守治疗和手术治疗的进展和原则变化情况.另外,根据最近的临床研究,本文认为,脊柱力学平衡在保守治疗过程中应该引起足够的临床重视.