二分数据的多层线性模型:原理与应用

分类数据的多层线性模型在我国的心理学研究中鲜有使用。本研究旨在将这种模型引入到我国心理学研究之中。论文首先介绍了二分数据的多层线性模型的原理和假设条件、参数估计和假设检验,然后以6187名小学生为被试,采用二分变量的多层线性模型,说明了个体因素和学校因素对儿童攻击行为的影响,并对分析结果进行了解释。     

消费者一定偏爱“笑脸”吗?产品外观中的表情元素对消费者的影响

表情是产品拟人化外观设计中重要元素。产品正面或负面的拟人化“表情” (表达正面或负面情感的表情)会影响到消费者对产品的感知。人际交往相关理论验证了正面表情对消费者的积极影响, 并认为负面表情不利于消费者与产品的互动。但是在现实市场中我们却看到, 消费者有时却更喜爱展现负面表情的产品, 营销领域的产品拟人化研究鲜有关注到产品表情的错位影响。具体而言, 在拟人化营销研究领域, 以下三个研究问题尚待探讨: 产品表情有怎样的具体体现及市场效用; 产品表情对消费者行为和态度影响的心理机制为何; 以及来自于消费者特质和产品因素的调节效应。回答以上问题能够进一步拓展和丰富营销领域的拟人化理论, 同时也将从实践上为产品外观设计提供建议和指导。     

情绪预测偏差的成因及干预

情绪预测偏差是一种对未来事件发生时情绪反应的预测和实际体验之间的分离现象。梳理该领域最近10年(2009~2019年)研究文献可知, 热点研究主题涉及偏差的现象、成因和干预, 相应呈现为三点主要发现: 情绪预测偏差十分普遍, 情绪预测偏差成因多源, 情绪预测偏差可以干预。未来研究应着力关注情绪预测偏差的发生模式和心理机制, 着力揭示具体偏差的神经心理机制, 并从进化和文化视角综合考察偏差的发生机制。     

A mixture model for responses and response times with a higher-order ability structure to detect rapid guessing behaviour

Many educational and psychological assessments focus on multidimensional latent traits that often have a hierarchical structure to provide both overall-level information and fine-grained diagnostic information. A test will usually have either separate time limits for each subtest or an overall time limit for administrative convenience and test fairness. In order to complete the items within the allocated time, examinees frequently adopt different test-taking behaviours during the test, such as solution behaviour and rapid guessing behaviour. In this paper we propose a new mixture model for responses and response times with a hierarchical ability structure, which incorporates auxiliary information from other subtests and the correlation structure of the abilities to detect rapid guessing behaviour. A Markov chain Monte Carlo method is proposed for model estimation. Simulation studies reveal that all model parameters could be recovered well, and the parameter estimates had smaller absolute bias and mean squared error than the mixture unidimensional item response theory (UIRT) model. Moreover, the true positive rate of detecting rapid guessing behaviour is also higher than when using the mixture UIRT model separately for each subscale, whereas the false detection rate is much lower than the mixture UIRT model. The deviance information criterion and the logarithm of the pseudo-marginal likelihood are employed to evaluate the model fit. Finally, a real data analysis is presented to demonstrate the practical value of the proposed model.     

Marginalized maximum a posteriori estimation for the four-parameter logistic model under a mixture modelling framework

The four-parameter logistic model (4PLM) has recently attracted much interest in various applications. Motivated by recent studies that re-express the four-parameter model as a mixture model with two levels of latent variables, this paper develops a new expectation–maximization (EM) algorithm for marginalized maximum a posteriori estimation of the 4PLM parameters. The mixture modelling framework of the 4PLM not only makes the proposed EM algorithm easier to implement in practice, but also provides a natural connection with popular cognitive diagnosis models. Simulation studies were conducted to show the good performance of the proposed estimation method and to investigate the impact of the additional upper asymptote parameter on the estimation of other parameters. Moreover, a real data set was analysed using the 4PLM to show its improved performance over the three-parameter logistic model.     

Do African American Male and Female Adolescents Differ in Technological Engagement?: The Effects of Parental Encouragement and Adolescent Technological Confidence

African Americans, especially African American women, remain one of the most underrepresented groups in technology-based degrees and careers. However, little is known about whether gender differences permeate African American adolescents’ engagement in technology in earlier development, such as in middle and high school (ages 12–18). Drawing on an ecological and intersectional framework, we examined if African American male and female adolescents differed in technological engagement and what contextual factors affected their engagement. We hypothesized that parental encouragement would be associated with greater technological confidence in adolescents, which would be linked to more experiences with and interests in technology. Further, we investigated if these associations would vary by adolescents’ and parents’ gender. Survey data from 1041 African American parent-adolescent dyads highlighted that adolescents had less experience and interest with technical activities than with creative activities, especially among female adolescents. More parents encouraged adolescent sons but limited daughters to use technology, yet female adolescents reported greater technological confidence. Moderated mediation analyses revealed that adolescents’ technological confidence mediated the positive association between parental encouragement and adolescents’ technological engagement across all parent-adolescent dyads, but with some nuances. Our findings suggest that prospective gender studies and educational programs should consider the influences of parenting and gender on promoting African American adolescents’ technological involvement and confidence.

     

Conceptualizing Media Stimuli in Experimental Research: Psychological Versus Attribute‐Based Definitions

This paper argues for a clearer conceptualization of media stimuli in experimental research and identifies 3 issues impeding our understanding of message processing: (a) assumptions bolstered by manipulation checks about homogeneity of response to media stimuli, (b) conflation of 2 different classes of variables—media attributes and psychological states, and (c) discrepancies between the conceptual model and operational‐level hypotheses used to test research questions. To provide a more comprehensive framework for investigating media effects in experimental research, we argue for a clearer conceptual separation between message attributes and user perceptions and apply a mediation model of information processing to overcome the limitations of conventional approaches. Subjected to 2 empirical tests involving the assessment of Web‐based media, the model finds an increase in explained variance in each instance.     

The Cognitive Architecture of Perceived Animacy: Intention,Attention, and Memory

Human vision supports social perception by efficiently detecting agents and extracting rich information about their actions, goals, and intentions. Here, we explore the cognitive architecture of perceived animacy by constructing Bayesian models that integrate domain‐specific hypotheses of social agency with domain‐general cognitive constraints on sensory, memory, and attentional processing. Our model posits that perceived animacy combines a bottom–up, feature‐based, parallel search for goal‐directed movements with a top–down selection process for intent inference. The interaction of these architecturally distinct processes makes perceived animacy fast, flexible, and yet cognitively efficient. In the context of chasing, in which a predator (the “wolf”) pursues a prey (the “sheep”), our model addresses the computational challenge of identifying target agents among varying numbers of distractor objects, despite a quadratic increase in the number of possible interactions as more objects appear in a scene. By comparing modeling results with human psychophysics in several studies, we show that the effectiveness and efficiency of human perceived animacy can be explained by a Bayesian ideal observer model with realistic cognitive constraints. These results provide an understanding of perceived animacy at the algorithmic level—how it is achieved by cognitive mechanisms such as attention and working memory, and how it can be integrated with higher‐level reasoning about social agency.     

天然自身抗体的研究及其哲学思考

天然自身抗体（NAA）是指在没有任何抗原主动免疫的情况下，正常机体内存在的针对一种或多种自身抗原的抗体，具有多种功能。自Landsteier提出正常人血清中存在NAA以来，人们对NA的认识由浅到深。有研究认为天然自身抗体的基本功能为调控正常机体的自身反应，维持免疫自稳态的平衡，阻止病理性自身免疫的发生。     

相互作用·本质契合与规律生成——兼与鲁品越教授商榷

《哲学动态》2008年第5期发表了鲁品越教授《生成论规律观与马克思主义哲学原理建设》一文。(以下简称鲁文)其文观点独到,令人耳目一新,读后深受启发。下面结合鲁文所论,来谈谈自己的一些思考和体会,以求得到指正。一鲁文认为,客观规律在事物相互作用中生成。对此,我深以为然。