Non‐ignorable missingness item response theory models for choice effects in examinee‐selected items

Examinee‐selected item (ESI) design, in which examinees are required to respond to a fixed number of items in a given set, always yields incomplete data (i.e., when only the selected items are answered, data are missing for the others) that are likely non‐ignorable in likelihood inference. Standard item response theory (IRT) models become infeasible when ESI data are missing not at random (MNAR). To solve this problem, the authors propose a two‐dimensional IRT model that posits one unidimensional IRT model for observed data and another for nominal selection patterns. The two latent variables are assumed to follow a bivariate normal distribution. In this study, the mirt freeware package was adopted to estimate parameters. The authors conduct an experiment to demonstrate that ESI data are often non‐ignorable and to determine how to apply the new model to the data collected. Two follow‐up simulation studies are conducted to assess the parameter recovery of the new model and the consequences for parameter estimation of ignoring MNAR data. The results of the two simulation studies indicate good parameter recovery of the new model and poor parameter recovery when non‐ignorable missing data were mistakenly treated as ignorable.     

Self‐other decision‐making differences in loss aversion: A regulatory focus perspective

Drawing on a cultural perspective, we examined whether differences in self‐other decision making documented in the West can be replicated in an Eastern context. Study 1 revealed that Chinese participants showed self‐other decision‐making differences in loss aversion similar to those observed in Western participants; loss aversion differed depending on the type of decision recipient, and trait regulatory focus moderated the self‐other decision‐making difference. Study 2 found a mediating effect of situational prevention but not promotion focus on the relationship between decision makers’ roles and loss aversion. Furthermore, both studies revealed that participants did not show a preference for loss aversion, suggesting that the baseline of self‐other decision‐making differences has shifted in China compared to the West.     

Help yourself by helping others: The joint impact of group member organizational citizenship behaviors and group cohesiveness on group member objective task performance change

This paper examines how a group member's individual‐targeted citizenship behavior (OCBI) and organization‐targeted citizenship behavior (OCBO) interact with a salient group‐level contextual variable, group cohesiveness, to foster positive change for that group member, starting with job self‐efficacy change, and followed by objective task performance change. Over a span of 6 months, we engaged in multilevel, multisource, multistage data collection and surveyed 587 members in 83 work groups. Our results indicate that a group member's OCBI, in comparison with OCBO, is more positively related to his or her job self‐efficacy change. Group cohesiveness was found to attenuate the relationship between a group member's OCBI and job self‐efficacy change, and conversely, to accentuate the relationship between a group member's OCBO and job self‐efficacy change. Furthermore, a group member's job self‐efficacy change mediated the interactive effects of the group member's OCBI and group cohesiveness (as well as the group member's OCBO and group cohesiveness) on his or her objective task performance change.     

The Relationship between Online Game Experience and Multitasking Ability in a Virtual Environment

Online game playing has become popular entertainment, yet its relationship with individuals' multitasking ability was inconsistent. Types of online game genre so far have not been compared and may be associated with multitasking abilities. This study proposed to explore the relationships between types of online game playing and multitasking ability, using Edinburgh Virtual Errands Test (EVET). One hundred and sixteen participants playing different online game genres, including multiplayer online battle arena (MOBA), other online game playing, and no‐online game playing were compared. Each participant was required to fill in Chen's Internet Addiction Scale and the Internet Usage Questionnaire and perform EVET and working memory tests. The results showed a positive correlation between multitasking ability and working memory. In addition, a positive association was found between MOBA‐type gaming and multitasking abilities measured by EVET. In conclusion, MOBA‐type gaming compared with other game playing is associated with better multitasking abilities in a virtual environment.Copyright © 2017 John Wiley & Sons, Ltd.     

A first-principles study of the formation of θ′′ phase in Al–Cu alloys

The θ′′-Al₃Cu phase plays an important role in the precipitation process of Al–Cu alloys. This phase has a sandwich structure—every two {200}_Cu layers are separated by three {200}_Al layers. To analyse the formation mechanism of this structure, the elastic strain energy of the {200}_Cu and {200}_Al layers, and the chemical bonding energy that reflects the interaction between the electrons in Cu and neighbouring Al atoms are calculated and analysed by first-principles calculations, projected density of states and Bader analysis. Our computation results reveal that this sandwich structure is energetically preferred in the competition of elastic strain and chemical bonding energies. To minimise the elastic strain energy of {200}_Al and {200}_Cu layers, the {200}_Cu layers prefer being apart from each other, whereas the chemical bonding energy favours the opposite arrangement because the intermetallic bond between Al and Cu atoms may form through p-d hybridization.     

Be-ing (you 有) and non-be-ing (wu 無) in the Dao De Jing

This essay questions the meaning of be-ing (you 有) and non-be-ing (wu 無) in the DDJ with regard to the root-source (benyuan 本源) meaning of dao. I first explore the meaning of dao as the dark non-be-ing, revealing the connotations of the distinction between dao and things (daowuqufen 道物區分) by comparison with some forms of Western metaphysics. The meaning of non-be-ing is elaborated in terms of the dynamic meanings of xu 虚 and chong 沖; The play between be-ing and non-be-ing is explored through the lens of yin and yang qi thinking. Qi thinking determines the mutually manifest and mutually interpretive characteristic of be-ing and non-be-ing. Be-ing and non-be-ing thus understood is an ever-flowing and mutually transforming process that penetrates the different levels of dao, things and humans. In the last part I investigate the meaning of “Be-ing comes from non-be-ing”.     

义符促进类别归纳推理的ERP证据

为了明确义符对归纳推理影响,本研究使用有义符和无义符汉字为材料,使用ERP技术考查义符对不同层级类别概念归纳推理的影响。行为结果显示,有义符条件下反应速度更快,肯定判断率更高。脑电指标上,P3阶段义符主效应显著,有义符条件下P3波幅更大;N1、N400和P600阶段义符与层级交互作用显著,组内简单效应分析显示,层级主效应仅在无义符条件下显著;组间简单效应分析显示,义符主效在N400和P600阶段仅在下-上推理条件下显著,无义符条件下,下-上推理引发更大的N400和P600波幅。这些结果表明,义符促进了归纳推理过程,这种促进主要表现在对下-上推理的促进。     

青少年父母依恋与生活满意度的关系:心理素质的中介作用

采用青少年父母依恋问卷、中学生心理素质问卷(简化版)和生活满意度量表在中国七个省(市)调查1953名初一至高三的学生,通过结构方程模型和bootstrap法考察青少年父亲依恋和母亲依恋对生活满意度的影响及其差异以及心理素质的中介作用。结果表明:(1)青少年父亲依恋、母亲依恋、心理素质和生活满意度之间两两显著正相关。(2)控制性别和学段后,心理素质在父亲依恋、母亲依恋与生活满意度间起部分中介作用。(3)父亲依恋和母亲依恋对生活满意度的影响无显著差异。     

心理素质对高中艺体生应对方式的影响:多重中介效应分析

该研究以423名高中艺体生为被试,采用问卷法考察了元认知和情绪智力在心理素质与应对方式间的多重中介作用,结果表明:(1)元认知和情绪智力分别在心理素质与问题解决、求助的应对方式间起多重中介作用;(2)情绪智力在心理素质与退避应对间起完全中介作用;(3)相较于情绪智力,元认知在心理素质与问题解决间的中介效应更强。     

HO-GDINA模型的EM算法参数估计

Generalized DINA Model(G-DINA)为认知诊断模型提供了一个一般性的理论框架,而高阶诊断模型不仅能描述被试的总体水平,还能描述被试对属性的掌握情况(微观的认知状态)以及被试掌握属性与能力的关系,提供更丰富的信息。如果能把这两者结合起来,可能对实际诊断工作的操作有较大帮助。文章首先对考虑高阶结构的整合性模型——HO-GDINA模型的形式进行讨论,探讨其参数估计EM算法的实现,并用模拟过程对模型的估计精度进行研究,结果验证了HO-GDINA的EM算法的正确性,并且说明该算法对该模型有较高估计精确度。然后用饱和模型在约束条件下的特殊形式HO-DINA模型对"分数减法"这一经典数据进行EM算法参数估计和具体分析,展示了HO-GDINA在实际情况中的具体使用,并与de la Torre之前用MCMC估计算法得到的研究结果做比较,基本一致,进一步表明HO-GDINA模型的参数估计EM算法在实际情境中的特殊形式下仍然适用。