抑制机制发展:认知发展研究的新视野

过去的认知和认知发展研究偏重于对激活过程的考察，随着当前认知科学和神经科学的进一步发展，从新的角度在更高的层次重新触发了人们对认知抑制及其发展机制的兴趣，使之成为国际认知和认知发展领域正在迅速崛起的一个重要课题。从无意向抑制和有意抑制两个方面的介绍可了解认知和认知发展领域近期关于抑制及其发展研究的状况和进展。     

Inter-participant variability in daily physical activity and sedentary time among male youth sport footballers: independent associations with indicators of adiposity and cardiorespiratory fitness

Participation in youth sport is assumed to promote and contribute towards more physically active lifestyles among children and adolescents. The aim of this study was to examine inter-participant variability in objectively measured habitual physical activity (PA) behaviours and sedentary time among youth sport participants and their implications for health. One-hundred-and-eighteen male youth sport footballers (Mean ± s = 11.72 ± 1.60) wore a GT3X accelerometer for 7 days. Average daily PA [min · day^?1, in light (LPA), moderate (MPA), vigorous (VPA) and combined moderate-to-vigorous (MVPA)] and sedentary time were calculated. Participants’ body mass index adjusted for age and sex (BMI–standard deviation score), per cent body fat (BF%), waist circumference and cardiorespiratory fitness were assessed. Results revealed that variability in daily PA behaviours and sedentary time (min · day^?1) was associated with BMI–standard deviation score [VPA (?), MVPA (?)], BF% [sedentary time (+), VPA (?), MVPA (?)], waist circumference [sedentary time (+), LPA (?)] and cardiorespiratory fitness [sedentary time (?), MPA (+), VPA (+), MVPA (+)]. Whilst sedentary time and MVPA were not related to health outcomes independent of one another, associations with markers of adiposity and cardiorespiratory fitness were stronger for sedentary time. Sedentary time was also significantly positively related to waist circumference independent of VPA. Results demonstrate inter-participant variability in habitual PA and sedentary time among youth sport participants which holds implications for their health. Thus, promoting PA and, in particular, reducing sedentary time may contribute towards the prevention of adverse health consequences associated with a physically inactive lifestyle for children and adolescents active in the youth sport context.     

从序时词语的基准看动意词语的着眼点

动词本身就具有时量属性,基准可以显现动词时量属性实现的语法,语义的规则。对“动－序组列”格式中动意词语作基准的着眼点的种类的分析,不仅可以揭示着眼点造成的岐义,而且有助于揭示动意词语的非基准用法,这除了说明动作有不同的着眼点外,还充实了起始点逆向漂移的类型,以此增强语用的解释力,更好地指导语言的运用。     

Recognition of facial emotions among maltreated children with high rates of post-traumatic stress disorder

OBJECTIVE: The purpose of this study is to examine processing of facial emotions in a sample of maltreated children showing high rates of post-traumatic stress disorder (PTSD). Maltreatment during childhood has been associated independently with both atypical processing of emotion and the development of PTSD. However, research has provided little evidence indicating how high rates of PTSD might relate to maltreated children's processing of emotions. METHOD: Participants' reaction time and labeling of emotions were measured using a morphed facial emotion identification task. Participants included a diverse sample of maltreated children with and without PTSD and controls ranging in age from 8 to 15 years. Maltreated children had been removed from their homes and placed in state custody following experiences of maltreatment. Diagnoses of PTSD and other disorders were determined through combination of parent, child, and teacher reports. RESULTS: Maltreated children displayed faster reaction times than controls when labeling emotional facial expressions, and this result was most pronounced for fearful faces. Relative to children who were not maltreated, maltreated children both with and without PTSD showed enhanced response times when identifying fearful faces. There was no group difference in labeling of emotions when identifying different facial emotions. CONCLUSIONS: Maltreated children show heightened ability to identify fearful faces, evidenced by faster reaction times relative to controls. This association between maltreatment and atypical processing of emotion is independent of PTSD diagnosis.     

张岱年论“本体”

张岱年是“解析的唯物论”的代表 ,但他的“本体”观既不同于强调解析的清华学派哲学家 ,又不同于当时的新唯物论者。张岱年所谓的“本体”是“理”与“物”的统一、“本”与“至”的统一 ,是总结中西“本体”观念基础上的一种综合创造。这种创造体现了张岱年超越清华学派和新唯物论的尝试     

波普尔的反归纳主义及其失误

波普尔认为，科学知识即理论内容的增长是科学进步最为重要的标志。然而，科学理论的内容丰富程度与逻辑概率之间正好是反变关系。因此，科学的目标不是追求理论的高概率，而是追求理论的低概率；不是追求理论的可证实性，而是追求理论的可证伪性。既然归纳推理是确立结论真实性或概然性的推理，所以归纳推理是与科学目标背道而驰的，因而应当将它从科学方法论中清除出去。然而，当波普尔引入“逼真性”概念以后，他的验证方法便不可能是完全演绎的，而是或多或少地含有归纳的成分。此外，他把塔尔斯基的真理论作为逼真性概念的理论基础也是错误的。     

Educating the Child‐centred Practitioner: Innovations and dilemmas

The education of child‐centered early childhood practitioners involves issues of content, pedagogy, relationships and context. Recent insights on the nature of child‐centered teaching generated by collaborative research with teachers, has highlighted its complexity and suggests that new ways of thinking about teacher education are needed. But developing a more learner‐centered approach to early childhood teacher education will be difficult, given the instrumentalist orientation in many institutions and in societies at large. This paper discusses the broad issues surrounding the development of a more learner‐centered approach to early childhood teacher education and describes several initiatives the authors have been involved in, in Australia and the United States.     

强化意识 更新观念——广东图书馆国际化发展初探

作为我国对外开放的前沿阵地,广东经济最先与国际经济融为一体,现在又提出建设文化大省的伟大事业。图书馆事业是文化事业的重要组成部分,因此,在建设文化大省过程中,探讨广东图书馆的国际化问题有重要的现实意义。本文拟从强化意识方面谈谈看法。     

教育行政权及其法律控制

权力的本质特点是强制性和支配性，它具有双重的性质和潜在的危害性。我国教育行政机关拥有的权力是巨大的，其对教育的管理也是一种行政管理模式，因而必须依法对其权力进行控制，即：树立行政法治观念；加强组织机构的变革；严格依法控权；追究违法行政的法律责任，建立完善的教育法律救济制度；强化行政道德。惟其如此，才能在制度上达到教育行政管理法治化之目的。