The impact of interpersonal affective relationships and awareness on expertise seeking: A multilevel network investigation

Transactive memory theory suggests that general awareness of expertise location in a group is sufficient to predict expertise seeking. Yet expertise seeking is, at least in part, a social phenomenon between two individuals embedded in a network of social relationships. Taking a multilevel, network perspective, we examined the interplay of affective relationships and awareness on expertise seeking in groups. Hypotheses were tested using network data collected from 693 employees in 53 sales groups. HLM analysis results indicated that awareness of expertise distribution positively influenced the decision to seek expertise at all levels of analysis examined. In addition, both positive and negative affective relationships influenced expertise seeking, although their pattern of influence differed across different levels of analysis. More specifically, having either a positive or a negative affective relationship with another group member affected the decision to seek expertise from that person. Although having many positive relationships had a positive effect on expertise seeking, having many negative affective relationships had no effect. Moreover, having both an awareness and a positive affective relationship with another group member amplified their positive effect on expertise seeking. Last, individuals who had more negative affective ties were less likely to leverage the positive impact of each awareness relationship on expertise seeking.     

父母婚姻质量与儿童内化问题:父母情绪表达的中介作用与儿童迷走神经活动的调节作用

基于家庭系统理论与个体-环境交互理论,研究考察了父母情绪表达在父母婚姻质量与儿童内化问题关系中的中介作用,以及儿童迷走神经活动的调节作用。研究选取155名6~7岁小学儿童为被试,运用便携式生理多道记录仪采集儿童静息与任务状态下的心电（ECG）与呼吸率,换算出基线RSA与RSA反应作为迷走神经活动的指标,采用母亲报告的《婚姻质量问卷》、《家庭情绪表达问卷》和《儿童行为量表》测评父母婚姻质量、父母情绪表达及儿童内化问题。结果发现：（1）父母婚姻质量负向预测小学儿童内化问题;（2）父母消极、积极情绪表达在父母婚姻质量与小学儿童内化问题关系中起中介作用;（3）小学儿童迷走神经张力（基线RSA）调节父母消极情绪表达与儿童内化问题关系。研究结果表明父母婚姻质量不仅直接影响儿童内化问题,同时会通过父母情绪表达间接地影响儿童内化问题。另外,较高迷走神经张力能够缓冲父母消极情绪表达对儿童内化问题的影响。     

目标拾取运动特性研究

对人体的目标拾取运动特性进行了研究,提出截止目标疋度的概念,推导目标拾取运动的时间计算方程,重新定义了难度指数,试验数据表明该计算方程对目标拾取运动能够给予较好的描述。     

初中生友谊质量与孤独感的变化轨迹:一项多元潜变量增长模型分析

为考察初中生友谊质量与孤独感的变化轨迹及两者间的关系,采用关系网络问卷、孤独感量表对西安市的875名初中生（M=12.73±0.18;男生494名）进行三年追踪测量,使用多元潜变量增长模型进行分析。结果发现：（1）初中三年,中学生的友谊质量逐渐提高,孤独感水平逐渐下降;（2）初一时的友谊质量和孤独感水平存在显著的个体差异,初中三年期间二者的发展速度也存在个体差异;（3）初一时的友谊质量可显著预测初一时的孤独感水平（β=-1.77,p<0.001）及随后的发展速度（β=0.20,p<0.05）;（4）男生的孤独感水平初始值高于女生,友谊质量的初始值则低于女生;高SES个体孤独感的起始值高于低SES个体。本研究结果揭示了初中三年期间个体友谊质量与孤独感的动态变化关系及友谊质量对孤独感的预测作用,对改善青少年孤独感的现状有一定的现实指导意义。     

Robust mean and covariance structure analysis through iteratively reweighted least squares

Robust schemes in regression are adapted to mean and covariance structure analysis, providing an iteratively reweighted least squares approach to robust structural equation modeling. Each case is properly weighted according to its distance, based on first and second order moments, from the structural model. A simple weighting function is adopted because of its flexibility with changing dimensions. The weight matrix is obtained from an adaptive way of using residuals. Test statistic and standard error estimators are given, based on iteratively reweighted least squares. The method reduces to a standard distribution-free methodology if all cases are equally weighted. Examples demonstrate the value of the robust procedure.The authors acknowledge the constructive comments of three referees and the Editor that lead to an improved version of the paper. This work was supported by National Institute on Drug Abuse Grants DA01070 and DA00017 and by the University of North Texas Faculty Research Grant Program.     

肿瘤逆转治疗的哲学思考

人们普遍认同正常组织可以变为肿瘤,将肿瘤逆转为正常组织将是最好的治疗手段,恶性肿瘤能否逆转曾经受到质疑和挑战,逆转恶性肿瘤从假说到科学经历了漫长而曲折的过程,运用马克思主义认识论的原理分析恶性肿瘤逆转的可行性、思路和方法,将为最终攻克恶性肿瘤开辟一条新的途径.     

Univariate and multivariate skewness and kurtosis for measuring nonnormality: Prevalence,influence and estimation

Nonnormality of univariate data has been extensively examined previously (Blanca et al., Methodology: European Journal of Research Methods for the Behavioral and Social Sciences, 9(2), 78–84, 2013; Miceeri, Psychological Bulletin, 105(1), 156, 1989). However, less is known of the potential nonnormality of multivariate data although multivariate analysis is commonly used in psychological and educational research. Using univariate and multivariate skewness and kurtosis as measures of nonnormality, this study examined 1,567 univariate distriubtions and 254 multivariate distributions collected from authors of articles published in Psychological Science and the American Education Research Journal. We found that 74 % of univariate distributions and 68 % multivariate distributions deviated from normal distributions. In a simulation study using typical values of skewness and kurtosis that we collected, we found that the resulting type I error rates were 17 % in a t-test and 30 % in a factor analysis under some conditions. Hence, we argue that it is time to routinely report skewness and kurtosis along with other summary statistics such as means and variances. To facilitate future report of skewness and kurtosis, we provide a tutorial on how to compute univariate and multivariate skewness and kurtosis by SAS, SPSS, R and a newly developed Web application.     

从语言到思想:基于指称问题考察分析哲学的范式转移

本文通过追溯当代内容理论的语言哲学和现象学起源,以指称性概念和意向性概念为核心,简要刻画了指称理论和内容理论的发展线索。在此基础上,本文试图借助语言指称问题和心理指称问题的平行关系,为当代分析哲学的主流从语言哲学到心灵哲学的范式转移的动机和方法勾勒出一个考察纲要。     

组织学习动力与行为的相关研究

通过对1074名各类企业员工和管理者的组织学习微观动力的测试,从宏观组织层面探讨了组织学习动力与组织学习行为之间的关系。结果表明：组织学习动力与组织学习行为相关显着。其中,组织学习动力中的“组织协调”因素对组织学习行为诸维度呈显着正相关,“交互性”因素对组织学习行为中的合作长远性和合作整体性维度呈显着正相关。     

国外目标承诺研究进展

本文在了解国外文献的基础上．综合概述了目标承诺的涵义、结构、测量、作用及其影响因素,并对这一领域的未来研究提出了展望。