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221.
Ping-Feng Xu Laixu Shang Qian-Zhen Zheng Na Shan Man-Lai Tang 《The British journal of mathematical and statistical psychology》2022,75(2):363-394
The aim of latent variable selection in multidimensional item response theory (MIRT) models is to identify latent traits probed by test items of a multidimensional test. In this paper the expectation model selection (EMS) algorithm proposed by Jiang et al. (2015) is applied to minimize the Bayesian information criterion (BIC) for latent variable selection in MIRT models with a known number of latent traits. Under mild assumptions, we prove the numerical convergence of the EMS algorithm for model selection by minimizing the BIC of observed data in the presence of missing data. For the identification of MIRT models, we assume that the variances of all latent traits are unity and each latent trait has an item that is only related to it. Under this identifiability assumption, the convergence of the EMS algorithm for latent variable selection in the multidimensional two-parameter logistic (M2PL) models can be verified. We give an efficient implementation of the EMS for the M2PL models. Simulation studies show that the EMS outperforms the EM-based L1 regularization in terms of correctly selected latent variables and computation time. The EMS algorithm is applied to a real data set related to the Eysenck Personality Questionnaire. 相似文献
222.
为考察选择性注意如何影响行人整合交通信号中的多感觉加工优势,研究采用线索—靶子范式,操控交通信号类型(视觉/传统视觉信号灯、听觉、视听觉/有声信号灯)和信号呈现位置(线索化位置、非线索化位置)两个变量,分析被试对视觉、听觉、视听觉三类刺激的反应时和正确率,并通过对相对多感觉反应增强值(rMRE)和竞争模型(race model)的计算,对多感觉加工优势效应进行量化。结果发现:有声信号灯能够产生多感觉加工优势,选择性注意会减弱有声信号灯的多感觉加工优势。该研究结果为有声信号灯的设置提供了理论依据,且提示应当避免在环境中设置容易引起行人选择性注意的设施。 相似文献
223.
Mediation analysis constitutes an important part of treatment study to identify the mechanisms by which an intervention achieves its effect. Structural equation model (SEM) is a popular framework for modeling such causal relationship. However, current methods impose various restrictions on the study designs and data distributions, limiting the utility of the information they provide in real study applications. In particular, in longitudinal studies missing data is commonly addressed under the assumption of missing at random (MAR), where current methods are unable to handle such missing data if parametric assumptions are violated. In this paper, we propose a new, robust approach to address the limitations of current SEM within the context of longitudinal mediation analysis by utilizing a class of functional response models (FRM). Being distribution-free, the FRM-based approach does not impose any parametric assumption on data distributions. In addition, by extending the inverse probability weighted (IPW) estimates to the current context, the FRM-based SEM provides valid inference for longitudinal mediation analysis under the two most popular missing data mechanisms; missing completely at random (MCAR) and missing at random (MAR). We illustrate the approach with both real and simulated data. 相似文献
224.
Louis D. Brown Xiaohui Tang Ruth L. Hollman 《American journal of community psychology》2014,53(1-2):83-95
Self-help support groups are indigenous community resources designed to help people manage a variety of personal challenges, from alcohol abuse to xeroderma pigmentosum. The social exchanges that occur during group meetings are central to understanding how people benefit from participation. This paper examines the different types of social exchange behaviors that occur during meetings, using two studies to develop empirically distinct scales that reliably measure theoretically important types of exchange. Resource theory informed the initial measurement development efforts. Exploratory factor analyses from the first study led to revisions in the factor structure of the social exchange scales. The revised measure captured the exchange of emotional support, experiential information, humor, unwanted behaviors, and exchanges outside meetings. Confirmatory factor analyses from a follow-up study with a different sample of self-help support groups provided good model fit, suggesting the revised structure accurately represented the data. Further, the scales demonstrated good convergent and discriminant validity with related constructs. Future research can use the scales to identify aspects of social exchange that are most important in improving health outcomes among self-help support group participants. Groups can use the scales in practice to celebrate strengths and address weaknesses in their social exchange dynamics. 相似文献
225.
Hao Tang 《Synthese》2014,191(14):3173-3194
A dualism characteristic of modern philosophy is the conception of the inner and the outer as two independently intelligible domains. Wittgenstein’s attack on this dualism contains deep insights. The main insight (excavated from §304 and §293 of the Philosophical Investigations) is this: our sensory consciousness is deeply shaped by language and this shaping plays a fundamental role in the etiology of the dualism. I locate this role in the learning of a sensation-language (as described in §244), by showing that this learning is, under another aspect, the incision of language, namely the infliction of cuts upon certain natural-primitive unities between the inner and the outer. These cuts, driven by powerful forces, eventually harden into an entrenched division between the inner and the outer, thereby providing a constant soil for the dualism. That this dualism is rooted in the very learning of a language is cause for ambivalence about language. 相似文献
226.
Christopher K. Hsee Yuval Rottenstreich Judy Tang 《Social and Personality Psychology Compass》2014,8(12):699-707
How people react to negatives (what they dislike) is not always symmetric to how they react to positives (what they like). We propose a theoretical framework that links three potentially general types of positive–negative asymmetries: asymmetry in prediction errors (people err more when predicting others' attitudes about positives than about negatives), asymmetry in consensus (people agree more among themselves about negatives than about positives), and asymmetry in base rates (there are more negatives than positives). Our theory further explores a moderator for these asymmetries – importance of the stimulus to the self: greater importance engenders greater positive–negative asymmetries. We provide empirical evidence for our theory and discuss the boundaries and implications of our propositions and findings. 相似文献
227.
Matthew F. Tang David R. Badcock Troy A. W. Visser 《Psychonomic bulletin & review》2014,21(2):406-411
The attentional blink (AB) refers to a deficit in reporting the second of two sequentially presented targets when they are separated by less than 500 ms. Two decades of research has suggested that the AB is a robust phenomenon that is likely attributable to a fundamental limit in sequential object processing. This assumption, however, has recently been undermined by a demonstration that the AB can be eliminated after only a few hundred training trials (Choi, Chang, Shibata, Sasaki, & Watanabe in Proceedings of the National Academy of Sciences 109:12242–12247, 2012). In the present work, we examined whether this training benefited performance directly, by eliminating processing limitations as claimed, or indirectly, by creating expectations about when targets would appear. Consistent with the latter option, when temporal expectations were reduced, training-related improvements declined significantly. This suggests that whereas training may ameliorate the AB indirectly, the processing limits evidenced in the AB cannot be directly eliminated by brief exposure to the task. 相似文献
228.
Yongming Tang 《World Futures: Journal of General Evolution》2013,69(3-4):347-365
Challenged by overwhelming social and ecological problems and crises, a new alternative that re‐explains the world is called for to transform human consciousness. The author argues that an alternative should meet the following criteria: (1) corresponding to the total reality, (2) contributing evolution of consciousness, and (3) coming with an adequate action methodology. Based on an understanding of the coherent patterns—the processes of differentiation and integration—through which the universe evolves, the Synergy Principle of the universe is established. Dimensionality of consciousness—the visible, logical, and mythical—is also presented. Further, the Synergic Inquiry methodology designed to guide human action work for consciousness transformation at various levels of human systems is developed. Finally a few levels of synergy are also discussed. 相似文献
229.
This study examined the relationship between ninth-grade students’ use of connectives (temporal, causal, adversative, and additive) in functional writing and performance on standards-based/criterion-referenced measures of reading and writing. Specifically, structural equation modeling (SEM) techniques were used to examine the relationship between students’ use of connectives in their functional writing and their reading and writing proficiency. Results indicated that the number of connectives used in functional writing was significantly correlated to writing test scores and reading comprehension test scores, no matter whether the effect of the common predictor was removed or not. The results provide support for future research in the study of connective words in relation to functional writing skills and reading comprehension. 相似文献
230.
Moral decision making has recently attracted considerable attention as a core feature of all human endeavors. Previous functional magnetic resonance imaging studies about moral judgment have identified brain areas associated with cognitive or emotional engagement. Here, we applied graph theory-based network analysis of event-related potentials during moral decision making to reveal the personal/impersonal distinction in the organization of functional connectivity. Our results indicated that the personal task had more larger long-range connections involved in frontal regions and the right hemisphere, and higher network efficiency of some frontal electrodes such as F2 than the impersonal. These might be related to brain resource reorganization contributing to efficient conflict resolution. These findings provide new insights into neural mechanisms of moral dilemmas. 相似文献