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.     

Making sense of positive self‐evaluations in China: The role of sociocultural change

Recent research points to Chinese people's elevated tendency to make positive self‐evaluations, despite the general claim that East Asians do not self‐enhance. We present three studies in support of a novel prediction that sociocultural change in China plays an important role in augmenting self‐enhancement. We operationalized self‐enhancement primarily in terms of the better‐than‐average effect (BTAE) and accounted for trait desirability or importance. We found that: (i) compared with Chinese Canadians, Chinese showed a stronger BTAE; (ii) within the Chinese, identification with contemporary Chinese culture uniquely predicted a stronger BTAE; and (iii) priming contemporary (vs. traditional) Chinese culture led to a stronger BTAE. Finally, we provided further evidence that motivation, in part, underlies the rising Chinese BTAE. We conclude by discussing the importance of both socioeconomic and cultural perspectives for understanding how and when of self‐enhancement in contemporary China and other societies undergoing social change.     

大五人格测验在中国应用的信度概化分析

对过去20年(1994~2013年)间国内有关大五人格测验的研究文献进行信度概化分析。结果表明:(1)检索到的文献中约68.15%存在"信度引入"现象;(2)未加权估计中,A和O的均值最低,N和C的均值最高,国内所得结果均略低于国外(O除外),而后者的变异性略大(E除外);采用α系数效果量方法,在随机效应模型中,N的估计值最高,O和A的估计值最低;(3)回归分析显示,分数均值、量表来源和南北地域差异是N维度信度的预测变量;量表来源、文章专业类型、测验版本和测验记分对E维度信度具有预测作用;样本量、文章专业类型和量表来源是O维度信度的预测变量;量表来源、文章专业类型、项目数和样本类型对A维度信度具有预测作用;量表来源、项目数、文章专业类型和测验记分是C维度信度的预测变量。     

心理分离研究进展*

心理分离指的是个体在非工作时间里从工作中分离出来,个体不仅身体上远离工作场所,精神上也摆脱掉工作的事情,对员工工作压力的恢复过程非常关键。首先,文本概述了心理分离的概念及其进展;其次,论述了心理分离研究现状;最后,阐述了心理分离的已有研究存在的问题和未来研究的方向。     

解析心理冲突的新角度--评介凯根的结构-发展理论

本文介绍了自我发展研究领域中罗伯特凯根提出的结构-发展理论及其特点,简析它与其它自我发展阶段论的异同。探讨了该理论在抚育、学校教育和临床咨询等方面的实践意义。     

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。     

对膝下段股-腘动脉人工血管移植术后患者疗效影响的比较分析

观察苏合香丸对膝下段股一胭动脉人工血管移植术后患者疗效的影响。共34例患者,随机分为苏合香丸组及对照组,两组均采用常规术后处理,苏合香丸组加用苏合香丸口服。观察术后第1、2年的疗效评价、踝／肱指数及彩超检查通畅率。两组患者术后第l、2年总有效率中药组较对照组均明显提高（P〈0．05）,中药组ABI显著高于对照组（P〈0...     

进化心理学中的悲观主义色彩

进化心理学作为现代西方心理学三种新取向之一,提出了一些新的心理学观点与研究方向,但其理论本身体现出了一种悲观主义色彩。例如在对男女两性在伴侣选择和婚姻维持的心理行为机制的探究上体现出的一些人类高级情感,如爱情的缺失。文章探讨了进化心理学理论中悲观主义色彩在其主要理论假设中的体现,并简要地将其与另外两种取向———后现代心理学与积极心理学进行了对比。其目的是为了通过对进化心理学的反思,以推进心理学科的深入研究。