Identifying Variables Responsible for Data not Missing at Random

When data are not missing at random (NMAR), maximum likelihood (ML) procedure will not generate consistent parameter estimates unless the missing data mechanism is correctly modeled. Understanding NMAR mechanism in a data set would allow one to better use the ML methodology. A survey or questionnaire may contain many items; certain items may be responsible for NMAR values in other items. The paper develops statistical procedures to identify the responsible items. By comparing ML estimates (MLE), statistics are developed to test whether the MLEs are changed when excluding items. The items that cause a significant change of the MLEs are responsible for the NMAR mechanism. Normal distribution is used for obtaining the MLEs; a sandwich-type covariance matrix is used to account for distribution violations. The class of nonnormal distributions within which the procedure is valid is provided. Both saturated and structural models are considered. Effect sizes are also defined and studied. The results indicate that more missing data in a sample does not necessarily imply more significant test statistics due to smaller effect sizes. Knowing the true population means and covariances or the parameter values in structural equation models may not make things easier either. The research was supported by NSF grant DMS04-37167, the James McKeen Cattell Fund.     

组织学习动力研究

本文以协调博弈原理为基础,系统分析了组织学习中微观个体层面和宏观组织层面的学习动力性质和相互关系,尝试提出了刻画宏观组织层面学习动力状态的理论和方法,并据此建立了协调组织学习动力的三维整合模型。     

我国中学生职业兴趣的特点与测验编制

随着当前就业压力的增加,社会竞争也愈演愈烈,职业生涯规划的问题逐渐受到人们的重视。本文基于当代高中毕业生选报大学专业时对自身兴趣特点深入了解的需要,在国内外职业兴趣研究的基础上,探讨了我国高中生职业兴趣的特点,并编制出一套适合当前中国高中生兴趣特点的职业兴趣测验。该测验将职业兴趣分为七种类型：艺术型、事务型、经营型、研究型、自然型、社会型和技术型。测验的信、效度测量指标均达到比较满意的水平。经过初步推广使用,获得了广大使用者的好评。     

动机的结构与效应：基于动机连续体的视角

动机连续体是对内部动机、外部动机进行整合的心理学概念,其对内部动机和外部动机的争论提出了不同的假设。从大理论(grand theory)视角出发,对涉及上述两个概念的理论进行梳理,将自我决定理论与其他相关理论进行整合。由此展开对内部动机、外部动机结构的讨论,总结了动机的单维结构、多维结构和复杂结构假设下的理论新进展,分别论述在拮抗效应、累加效应和其他复杂效应等假设下动机对结果变量的影响,并展开不同效应对实践应用的讨论。     

社会排斥对青少年自伤的影响:羞耻感的中介和认知重评的调节

通过3个行为实验考察了社会排斥对青少年自伤的影响。实验1发现,社会排斥和自伤经历能明显增加青少年的自伤时长(假设1);实验2进一步验证假设1,并验证了羞耻感的中介作用(假设2);实验3验证了认知重评对羞耻感中介效应的调节作用(假设3)。结果表明,社会排斥通过诱发羞耻感影响青少年自伤,但采用认知重评的情绪管理策略能够有效阻断羞耻感的中介作用。本研究为青少年自伤的认知干预提供了有力的实证支持。     

An overview of applied robust methods

Data in social sciences are typically non-normally distributed and characterized by heavy tails. However, most widely used methods in social sciences are still based on the analyses of sample means and sample covariances. While these conventional methods continue to be used to address new substantive issues, conclusions reached can be inaccurate or misleading. Although there is no ‘best method’ in practice, robust methods that consider the distribution of the data can perform substantially better than the conventional methods. This article gives an overview of robust procedures, emphasizing a few that have been repeatedly shown to work well for models that are widely used in social and behavioural sciences. Real data examples show how to use the robust methods for latent variable models and for moderated mediation analysis when a regression model contains categorical covariates and product terms. Results and logical analyses indicate that robust methods yield more efficient parameter estimates, more reliable model evaluation, more reliable model/data diagnostics, and more trustworthy conclusions when conducting replication studies. R and SAS programs are provided for routine applications of the recommended robust method.     

述情障碍与中学生人际关系:有调节的中介模型

为明确述情障碍与中学生人际关系间关系的内在机制,采用中学生人际关系量表、多伦多述情障碍量表、社交焦虑量表及领悟社会支持量表调查了北京市、石家庄市、佳木斯市三所中学7至11年级共998名学生,根据述情障碍的筛查标准,最终获得218份有效数据。结论如下：（1）述情障碍与社交焦虑呈显著正相关,与人际关系、社会支持呈显著负相关;人际关系与社交焦虑呈显著负相关,而与社会支持呈显著正相关;社交焦虑与社会支持呈显著负相关;（2）社交焦虑在述情障碍与中学生人际关系间起中介作用;社会支持在述情障碍与中学生人际关系间起调节作用;（3）"述情障碍→社交焦虑→中学生人际关系"这一中介路径的前半段,受到社会支持的调节。与高社会支持个体相比,述情障碍对低社会支持个体的社交焦虑影响更大。     

Young children's self‐benefiting lies and their relation to executive functioning and theory of mind

It is well established that children lie in different social contexts for various purposes from the age of 2 years. Surprisingly, little is known about whether very young children will spontaneously lie for personal gain, how self‐benefiting lies emerge, and what cognitive factors affect the emergence of self‐benefiting lies. To bridge this gap in the literature, we situated children between 2 and 4 years of age in a zero‐sum game where children must lie to their opponent if they wanted to win a desirable reward. We found that the majority of young children did not lie even when they experienced personal losses repeatedly. However, some children spontaneously lied during the game; as the game progressed, more children lied. Further, we found that children's theory of mind understanding and executive functioning in terms of a combination of inhibitory control and cognitive flexibility had significant positive and unique correlations with how frequently children lied for personal gain. The present results taken together with the existing findings regarding children's lies for self‐protection and politeness purposes suggest that the act of lying begins early in life. Further, its emergence and development are influenced by children's specific cognitive abilities in the domains of theory of mind understanding and executive functioning.

Highlights

• The study investigated whether very young children will spontaneously lie for personal gain.
• This study used a zero‐sum game to elicit children's self‐benefiting lies. Results showed the majority of young children did not lie, and it is related to children's theory of mind understanding and executive functioning.
• The act of lying begins early in life, and its emergence and development are influenced by children's specific cognitive abilities in the domains of theory of mind understanding and executive functioning.

     

基督教的传播与罗马帝国统治者的因应对策

罗马帝国统治者以政治标准和实用态度裁决基督教,从视为犹太教的一个小教派予以默认,到将其视为一种非法的宗教加以迫害,再到承认其合法性,都是基于统治者的利益和政治的现实需要而调整,最终基督教提升为国教。罗马帝国的基督教政策为未来的国家统治者干涉教会事务确定了先例,对中世纪西欧政教关系的格局产生了深远影响。     

马克思主义哲学教学体系的形成与演变(上)

马克思并不是一个把哲学课题化、体系化的职业哲学家,而首先是一个革命家,是一个以实现无产阶级和人类解放为毕生使命的革命家。但是,以无产阶级和人类解放为理论主题,以形而上学批判、意识形态批判和资本批判为理论形式的马克思主义哲学,又的确存在着理论体系。马克思虽然