Transmission electron microscopy characterization of the high-Tc superconductor HgBa2Ca3Cu4O 10+ delta

The structures of HgBa3Ca4Cu4O10+ delta(Hg-1234) samples have been characterized by means of high-resolution electron microscopy, electron diffraction, X-ray energy-dispersive spectroscopy (XEDS) and electron-energy-loss spectroscopy (EELS) techniques. A modulated structure with a modulation vector of q = (0.036-0.048) b* + 0.5c* was found for Hg-1234. High-resolution electron microscopy on the modulated structure revealed slight displacements of atomic layers along the c direction. The anomalous contrast induced by the modulation was observed to be distributed asymmetrically between the HgOdelta layers, leading to the breakdown of the (001) mirror symmetry of the basic structure. XEDS compositional analyses showed a depletion of mercury for the modulated Hg1234 compared with the unmodulated Hg-1234, while EELS analysis suggested the presence of carbon in the modulated Hg-1234 phase. In addition, a sidecentred ordered (Cu, Hg)-1223 phase with low mercury content was identified as one of the major impurity phases in the Hg-1234 samples.     

An Experimental Test of Whether Informants can Report About Child and Family Behavior Based on Settings of Behavioral Expression

Researchers and practitioners conduct multi-informant assessments of child and family behavior under the assumption that informants have unique perspectives on these behaviors. These unique perspectives stem, in part, from differences among informants in the settings in which they observe behaviors (e.g., home, school, peer interactions). These differences are assumed to contribute to the discrepancies commonly observed in the outcomes of multi-informant assessments. Although assessments often prompt informants to think about setting-specific behaviors when providing reports about child and family behavior, the notion that differences in setting-based behavioral observations contribute to discrepant reports has yet to be experimentally tested. We trained informants to use setting information as the basis for providing behavioral reports, with a focus on parental knowledge of children’s whereabouts and activities. Using a within-subjects controlled design, we randomly assigned 16 mothers and adolescents to the order in which they received a program that trains informants to use setting information when providing parental knowledge reports (Setting-Sensitive Assessment), and a control program involving no training on how to provide reports. Relative to the control program, the Setting-Sensitive Assessment training increased the differences between mother and adolescent reports of parental knowledge, suggesting that mothers and adolescents observe parental knowledge behaviors in different settings. This study provides the first experimental evidence to support the assumption that discrepancies arise because informants incorporate unique setting information into their reports.     

品牌印象结构及其测量研究

品牌印象是消费者基于对品牌信息的感知和体验而在头脑中留下的品牌部分或整体信息。在文献研究和关键事件访谈的基础上,通过筛选条目、形成初步问卷、预测验和正式测验等程序,经探索性因素分析和验证性因素分析,重测信度、聚合效度、辨别效度、法则效度和效标关联效度等检验,发现全方位的品牌印象由品牌质量印象、品牌传播印象、品牌服务印象和品牌价格印象等四个维度构成。用于测量品牌印象的多维量表、各维单项目量表和单项目量表均具有较好的信度和效度。     

Bootstrap Confidence Intervals for Ordinary Least Squares Factor Loadings and Correlations in Exploratory Factor Analysis

This article is concerned with using the bootstrap to assign confidence intervals for rotated factor loadings and factor correlations in ordinary least squares exploratory factor analysis. Coverage performances of SE-based intervals, percentile intervals, bias-corrected percentile intervals, bias-corrected accelerated percentile intervals, and hybrid intervals are explored using simulation studies involving different sample sizes, perfect and imperfect models, and normal and elliptical data. The bootstrap confidence intervals are also illustrated using a personality data set of 537 Chinese men. The results suggest that the bootstrap is an effective method for assigning confidence intervals at moderately large sample sizes.     

Player–Spectator Discrepancies on Risk Preference during Decision Making

Risk preference during decision making depends not only on the potential risk and profits but also on the roles taken in the current task. Those who perform tasks are more risk-seeking than those who only watch. Given the prominent effect of experiencing the task, the player–spectator discrepancies are supposed to arise in the experiencing phase instead of the choosing phase. In the present study, the authors separated the experiencing role and the choosing role through a stylus maze task in which participants first performed in pairs—one as the player and the other as the spectator—and then chose from two rewarding options for themselves or their partners. The findings show that the experience as players induced a risk-seeking tendency in decision making, which suggests that it was the experiencing role, rather than the choosing role, that caused the difference of risk preference, at least for financially motivated groups and under similar task conditions.     

The representation of category typicality in the frontal cortex and its cross-linguistic variations

When asked to judge the membership of typical (e.g., car) vs. atypical (e.g., train) pictures of a category (e.g., vehicle), native English (N = 18) and native Chinese speakers (N = 18) showed distinctive patterns of brain activity despite showing similar behavioral responses. Moreover, these differences were mainly due to the amount and pervasiveness of category information linguistically embedded in the everyday names of the items in the respective languages, with important differences across languages in how pervasive category labels are embedded in item-level terms. Nonetheless, the left inferior frontal gyrus and the bilateral medial frontal gyrus are the most consistent neural correlates of category typicality that persist across languages and linguistic cues. These data together suggest that both cross- and within-language differences in the explicitness of category information have strong effects on the nature of categorization processes performed by the brain.     

具身认知视角下的概念隐喻理论

隐喻是一种常见的语言现象.概念隐喻理论认为,隐喻不仅是一种语言修辞手段,隐喻反映了人类认知的重要特征:人类的抽象概念系统是以感知觉经验和具体概念为基础发展形成的.根据概念隐喻理论,主体可以以感知运动经验对抽象概念进行体验式表征与加工.大量研究证明,抽象概念的加工同对其进行隐喻化描述的身体经验具有关联.这些研究主要涉及空间隐喻、温度隐喻、洁净隐喻、触觉隐喻等.未来的研究应探讨多重隐喻对认知的影响、探索塑造隐喻映射单向作用与相互作用的因素,并关注概念隐喻理论的应用性等问题.     

汉字识别的时间进程：来自字谜任务的ERP证据

通过“学习-测试-判断”的三阶段实验范型, 采用事件相关电位（ERP）技术探讨了猜谜任务中对谜底答案（单个汉字）识别的脑内时程动态变化。结果发现：语义识别与字形识别下,汉字刺激均诱发了明显的N1、P2和N2成分,其中语义识别下的P2波幅表现为更加正性,可能与汉字语义的早期加工有关;随后,300-400ms内,语义识别比字形识别诱发了一个更加正性的ERP成分,该成分可能属于P300成分,反映了对汉字语义的进一步整合加工;最后,500-600ms内,语义识别比字形识别同样诱发了一个更加正性的ERP成分,可能反     

工作场所排斥后的应对:期望和效价的作用*

基于期望-效价理论探讨了期望(关系修复可能性)和效价(关系重要性)对工作场所排斥后应对行为的影响。研究1采取回忆范式证实了遭遇工作场所排斥后个体将以积极、消极或不作为行为进行应对,而期望和效价对应对行为有显著预测作用;研究2在研究1基础上,通过情境问卷对期望和效价进行操纵,进一步验证了期望、效价与应对行为之间的因果关系,即关系修复可能性越大、关系越重要,个体越倾向以积极而非消极行为进行应对。     

大学生压力事件与网络游戏成瘾:逃避动机的中介效应*

以472名男大学生网络游戏玩家为被试,考察了压力事件、网络游戏逃避动机和网络游戏成瘾的关系。结果发现:(1)大学生压力事件、网络游戏逃避动机和成瘾之间存在显著正相关。(2)压力事件除了对网络游戏成瘾有直接影响,还通过网络游戏逃避动机的中介作用对网络游戏成瘾产生间接影响。