家庭社会经济地位对小学生阅读自主性的影响:父母鼓励和阅读动机的中介作用

采用家庭社会经济地位问卷、学生阅读自主性量表、父母鼓励阅读问卷和阅读动机问卷,对313名小学生进行测查,并运用结构方程模型探讨家庭社会经济地位对阅读自主性的影响机制。结果表明:(1)家庭社会经济地位影响阅读自主性;(2)父母鼓励和阅读动机是上述影响关系的中介变量;(3)家庭社会经济地位通过父母鼓励影响阅读动机,进而影响阅读自主性,即父母鼓励和阅读动机起链式中介的作用。模型中两个中介变量父母鼓励和阅读动机一"外"一"内"协同作用,支持了家庭投资模型。     

Cultural Variations in Reasons for Advice Seeking

Five studies examined cultural differences in reasons for advice‐seeking behaviors. Content analyses in Study 1A and self‐ratings in Study 1B consistently revealed that Euro‐Canadians were more likely than East Asians (mainly Chinese) to seek advice for informational reasons, whereas East Asians were more likely than Euro‐Canadians to seek advice for relational reasons. Study 2A showed that Chinese displayed a higher level of relationship concern than Euro‐Canadians in deciding from whom to seek advice in a decision dilemma. Study 2B found that, although Chinese and Euro‐Canadians did not differ from each other on willingness to pay for informational advice, Chinese were willing to pay more for building a relationship with the advisor through advice seeking than Euro‐Canadians were. Study 3 explored how the advice giver might perceive an advice seeker in terms of their competence and the closeness of their relationship after advice was sought for various reasons. We found that relationally oriented advice seeking increased the perceived competence of the advice seeker among Chinese more than among Euro‐Canadians. Information‐oriented advice seeking increased the perceived closeness between the advice seeker and advice giver among Chinese more than among Euro‐Canadians. Implications for other aspects of advice exchange are discussed. Copyright © 2016 John Wiley & Sons, Ltd.     

After-effects induced by interactions between hydrogen and the martensite transformation in Ni–Ti superelastic alloy

The effects of dynamic interactions between hydrogen and a stress-induced martensite transformation on the recovery of deteriorated tensile properties by ageing in air at room temperature have been investigated for a Ni–Ti superelastic alloy. A specimen is subjected to single stress-induced martensite and reverse transformations immediately after hydrogen charging. Upon tensile testing, brittle fracture occurs in the latter half of the elastic deformation region of the martensite phase after the stress-induced martensite transformation. Upon ageing before the tensile test, fracture occurs during the stress-induced martensite transformation. In addition, the nano- and micro-morphologies of the brittle outer part of the fracture surface of the specimen are changed by ageing. Thus, the tensile properties markedly deteriorate, rather than recover, by ageing. The present results clearly indicate that dynamic interactions between hydrogen and the stress-induced martensite transformation have serious after-effects on hydrogen embrittlement of Ni–Ti superelastic alloy.     

Forecasting the influence of customer-related micro-events on employees’ emotional,attitudinal and physiological responses

The affective events theory proposes that daily events elicit affective reactions on workers that, over time, influence affective and judgement-driven behaviours. It also suggests that this relation is moderated by dispositions and appraisals. On the other hand, the social interaction model argues that the impact of emotions is moderated by how individuals regulate them. This study aimed to: (1) investigate what customer-related events elicit affect; (2) test the moderating role of workers’ susceptibility for emotional contagion on the relation events-affect; and (3) explore whether affective states influence cardiovascular efficiency and turnover intentions. We conducted a longitudinal study in an inbound call centre by following 48 workers during 10 working days, gathering 267 events and 1,232 affective reactions. We combined diaries, questionnaires and physiological data. Data was analysed qualitatively and quantitatively. We extracted 13 event categories and, using artificial neural networks (ANN), found support for the moderating role of emotional contagion. At daily level, fear was the stronger predictor of cardiovascular efficiency, whereas anger was the stronger predictor of turnover. ANN models showed satisfactory predictive values (R²_Turnover = .51, p < .01; R²_{Cardiovascular efficiency} = .32, p < .01). The importance of results for theory and practice is discussed.     

A cognitive perspective on Singaporean primary school pupils' use of reading strategies in learning to read in English

Background . This study is conducted in Singapore, where learning to read in English is regarded as essential because it is offered as a First Language (L1) subject in the curriculum and is stipulated as the medium of instruction in the education system, and the mother tongues are offered as Second Language (L2) subjects, although the majority still learn English as an L2. Aims . The paper reports on the reading strategies used by Singaporean primary school pupils from a cognitive perspective, which is part of a larger study that aims to investigate these pupils' language learning strategies. Sample . The participants were 18 pupils from three neighbourhood primary schools, in grades Primary 4, 5 and 6. Method . The data were collected from high‐ and low‐proficiency pupils at each of the three grades in each school, who read two texts at each level. Grounded in an information‐processing theory and based on successful experiences of scholars using think‐aloud for data collection, we asked the pupils to read and report what they were thinking about while reading. The think‐aloud protocols were recorded, transcribed verbatim, coded and analysed. Results . The results suggest that participants' flexible and appropriate use of reading strategies varies according to language proficiency and grade level, with the high‐proficiency group outperforming its lower‐proficiency counterpart and the high‐graders outnumbering the lower‐graders in terms of the number of strategies that they used. These differences were also exemplified with qualitative findings from case studies. Conclusions . The use of reading strategies differs according to proficiency levels, and the quality of pupils' strategy‐use patterns has more significant implications for understanding efficient reading among primary school pupils.     

热手谬误和赌徒谬误心理机制研究述评

在知觉随机序列时,人们倾向于把序列中实际上各自独立的相邻结果看作是存在正相关或负相关的,而出现热手谬误或赌徒谬误,又称为随机序列中的正负近因效应。有关这两谬误最早的心理机制的探索中,Kahneman 和Tversky采用局部代表性启发法对此进行了解释。但是这种解释也存在诸多不足,因此近期的一些模型（因果模型、Urn模型、记忆模型、适应模型和两阶段格式塔模型）分别从不同角度对两种谬误提出了新的解释。最后文章指出研究方法、神经机制、个体差异以及生活中的应用是该领域研究的几个未来发展方向     

成人股骨头坏死的治疗进展

股骨头坏死（ONFH）是一种进展性和致残性疾病,保存自身股骨头是临床治疗所追求的最理想目标,早中期的治疗方案主要采用非手术疗法和保髋的姑息性手术,目前为止还没有一种治疗方法能达到理想的治疗效果。近年来,骨髓间充质于细胞（MSCs）移植治疗ONFH是目前研究热点之一,有望成为一种有效的治疗方法,晚期行人工髋关节置换术是唯一的和最佳的选择。因此,早期诊断,采用综合性治疗方案保全自身髋关节是治疗本病的主要方向。     

Purple sweet potato color repairs d-galactose-induced spatial learning and memory impairment by regulating the expression of synaptic proteins

Purple sweet potato color (PSPC), a class of naturally occurring anthocyanins used to color food (E163), has been reported to possess a variety of biological activities, including anti-oxidant, anti-tumor, and anti-inflammatory. The effect of PSPC on the spatial learning and memory of mice treated with d-galactose (d-gal) was evaluated by the Morris water maze; d-gal-treated mice had decreased performance compared with mice in the vehicle and PSPC groups, while the PSPC + d-gal group showed significantly shortened escape latency to platform, increased swimming speed, more target quadrant search time and more platform crossings as compared with the d-gal group. Brain functions, such as memory formation and recovery of function after injury, depend on proper regulation of the expression levels of the pre- and post-synaptic proteins. We investigated the expression of four pre-synaptic proteins (growth-associated protein-43, synapsin-I, synaptophysin, and synaptotagmin) and two post-synaptic proteins (post-synaptic density protein-95 and Ca²⁺/calmodulin-dependent protein kinase II) in the hippocampus and cerebral cortex, respectively, in response to different treatments. Western blotting analysis showed that there were significant decreases in the expression of these representative synaptic proteins in the hippocampus and cerebral cortex of d-gal-treated mice. Interestingly, these decreased expression levels of synaptic proteins could be reversed by PSPC. The levels of expression of these representative synaptic proteins in mice treated with PSPC alone were not significantly different from those in untreated mice. The results of this study suggested that memory impairment and synaptic protein loss in d-gal-treated mice may be improved by treatment with PSPC.     

脉压差变化对预测心血管疾病的研究进展

心血管疾病严重威胁人类的生命安全及身心健康,脉压差作为预测心血管疾病的指标近年来也颇受重视,研究结果显示：脉压差和冠心病的发病率呈显著正相关,脉压差升高是动脉硬化及心血管病高危的一个标志,它的作用大于舒张压甚至超过收缩压;提示：脉压差是心血管疾病的一个良好的预测因子,也是反映中老年人血管硬化的一个较好的指标。