A New Multilevel CART Algorithm for Multilevel Data with Binary Outcomes

The multilevel logistic regression model (M-logit) is the standard model for modeling multilevel data with binary outcomes. However, many assumptions and restrictions should be considered when applying this model for unbiased estimation. To overcome these limitations, we proposed a multilevel CART (M-CART) algorithm which combines the M-logit and single level CART (S-CART) within the framework of the expectation-maximization. Simulation results showed that the proposed M-CART provided substantial improvements on classification accuracy, sensitivity, and specific over the M-logit, S-CART, and single level logistic regression model when modeling multilevel data with binary outcomes. This benefit of using M-CART was consistently found across different conditions of sample size, intra-class correlation, and when relationships between predictors and outcomes were nonlinear and nonadditive.     

基于速度与准确率权衡的心理测量学模型及应用

在大规模被试评价中,任务完成的准确率一直是评价的主要指标。然而,在各种任务情景中,反映执行者素质的指标除了结果的正确性之外,决策过程的时效性同样是极其重要的。因此,开发一个适合大规模评价情景,同时考虑速度与准确率权衡的模型,探索被试作答准确率与速度间的关系将具有重要的价值。基于认知心理学实验中的速度与准确率研究,构建一个基于速度与准确率权衡的心理测量学模型。新模型参数能非常稳定而又精确地被估计,同时模型中的变量及其关系也能够很好地得到实测数据的支持。     

群体内疚:界定、心理机制、行动倾向及干预策略

当个体认为内群体为外群体受到的不道德伤害负有责任时会体验到群体内疚。该情绪常见的触发情境包括过往历史的伤害事件、当下的群际冲突、不公正的社会关系及未来的伤害事件。群体认同、内群体责任和不当性评估是影响群体内疚产生的三大心理机制。群体内疚会导致施害群体对受害群体表现出积极行动,如友善态度,冲突和解、群体补偿及群际支持。通过群体肯定、自我肯定、促进共同认同、强调内群体责任及展现已有补偿行为等干预策略可以引发施害群体的群体内疚。未来的研究应澄清群体内疚的成因机制,进一步探索群体内疚与补偿行为间的作用关系。     

大学生心理需求与网络社交:认知评估与自我调控的作用

为探讨大学生心理需求、认知评估、自我调控和网络社交的关系,采用大学生心理需求量表、网络利弊权衡问卷、自我调控问卷和网络交往问卷对503名大学生进行调查,结果发现:(1)大学生心理需求可显著正向预测网络社交;对上网的好处和代价认知评估在两者间起部分中介作用。(2)自我调控在心理需求和网络社交间起调节作用。由此得出结论,大学生的心理需求可显著影响网络社交,对上网的好处和代价认知评估在二者间起中介作用,自我调控起调节作用。研究结果进一步揭示了心理需求影响网络社交的内在机制,可为网络时代大学生进行健康网络社交提供有益指导。     

Statistical regularities guide the spatial scale of attention

Visual scenes contain information on both a local scale (e.g., a tree) and a global scale (e.g., a forest). The question of whether the visual system prioritizes local or global elements has been debated for over a century. Given that visual scenes often contain distinct individual objects, here we examine how regularities between individual objects prioritize local or global processing. Participants viewed Navon-like figures consisting of small local objects making up a global object, and were asked to identify either the shape of the local objects or the shape of the global object, as fast and accurately as possible. Unbeknown to the participants, local regularities (i.e., triplets) or global regularities (i.e., quadruples) were embedded among the objects. We found that the identification of the local shape was faster when individual objects reliably co-occurred immediately next to each other as triplets (local regularities, Experiment 1). This result suggested that local regularities draw attention to the local scale. Moreover, the identification of the global shape was faster when objects co-occurred at the global scale as quadruples (global regularities, Experiment 2). This result suggested that global regularities draw attention to the global scale. No participant was explicitly aware of the regularities in the experiments. The results suggest that statistical regularities can determine whether attention is directed to the individual objects or to the entire scene. The findings provide evidence that regularities guide the spatial scale of attention in the absence of explicit awareness.     

Christian Identification and Self‐Reported Depression: Evidence from China

The nexus between religion and mental health in the East has been understudied, where the coexistence of multiple religions calls for scholarly attention to religious identification. This article investigates the impact on self‐reported depression of an individual's identification with Christianity in a non‐Judeo‐Christian and religion‐regulating social setting. Taking advantage of the Chinese General Social Survey 2010, our empirical analyses suggest that people who explicitly identify with Christianity report a significantly higher level of depression compared with both religious nones and self‐claimed Buddhists. In contrast, there is no significant difference in self‐reported depression between religious nones and self‐identified Buddhists. This study supplements current literature on the connection between religious affiliation and mental health with a particular interest in East Asia, suggesting that the consequence on mental health of religious identification is contingent on a religion's social status, and a religion's marginal position may turn religious identification into a detrimental psychological burden.     

The Inversion Effect for Chinese Characters is Modulated by Radical Organization

In studies of visual object recognition, strong inversion effects accompany the acquisition of expertise and imply the involvement of configural processing. Chinese literacy results in sensitivity to the orthography of Chinese characters. While there is some evidence that this orthographic sensitivity results in an inversion effect, and thus involves configural processing, that processing might depend on exact orthographic properties. Chinese character recognition is believed to involve a hierarchical process, involving at least two lower levels of representation: strokes and radicals. Radicals are grouped into characters according to certain types of structure, i.e. left–right structure, top–bottom structure, or simple characters with only one radical by itself. These types of radical structures vary in both familiarity, and in hierarchical level (compound versus simple characters). In this study, we investigate whether the hierarchical-level or familiarity of radical-structure has an impact on the magnitude of the inversion effect. Participants were asked to do a matching task on pairs of either upright or inverted characters with all the types of structure. Inversion effects were measured based on both reaction time and response sensitivity. While an inversion effect was observed in all 3 conditions, the magnitude of the inversion effect varied with radical structure, being significantly larger for the most familiar type of structure: characters consisting of 2 radicals organized from left to right. These findings indicate that character recognition involves extraction of configural structure as well as radical processing which play different roles in the processing of compound characters and simple characters.     

Genetic and Environmental Pathways Underlying Personality Traits and Perceived Stress: Concurrent and Longitudinal Twin Studies

The present study examined the genetic and environmental etiology underlying the Big Five personality traits and perceived stress, concurrently and longitudinally. In study 1, we used the twin sample from the National Longitudinal Study of Adolescent to Adult Health (Add Health IV) data. The results indicated that about 70% of the association between the Big Five personality traits and perceived stress was due to genetic influences. In study 2, we used the twin sample from the Midlife in the United States Survey (MIDUS I and II) to examine the genetic and environmental influences underlying the longitudinal relations between the Big Five personality traits and perceived stress. The results suggested that continuity in perceived stress was primarily accounted for by genetic influences, and changes in perceived stress were mainly due to nonshared environmental influences. The continuity in the association between the five personality traits and perceived stress was largely accounted for by genetic factors, and nonshared environmental factors made greater contributions to changes in the association between personality traits and perceived stress. Among the Big Five personality traits, the genetic components in conscientiousness and neuroticism made substantial contributions to the genetic link between personality traits and perceived stress across both studies. Copyright © 2017 European Association of Personality Psychology     

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。