Effect of pressure on the mechanical and dynamical stability of NaAlSi

The effects of pressure on the mechanical and dynamical stability of NaAlSi have been fully investigated by first-principles calculations within the generalised gradient approximation (GGA). The obtained results show that the optimised lattice constants, atomic positions and elastic constants at ambient pressure are in good agreement with the available experimental and theoretical data. The lattice constants decrease monotonically with increasing pressure. The elastic constant C₁₁, C₁₂, C₁₃, C₃₃ and C₆₆ increase while C₄₄ decreases with increasing pressure. It is found that NaAlSi is mechanically unstable when the pressure is above 25.97?GPa. The phonon-dispersion curves along several high symmetry lines are obtained. The phonon frequencies at the Z point decrease with increasing pressure and completely soften to zero at 27.52?GPa, further confirming the structural instability of NaAlSi.     

公平感对社会认知的影响:经济因素的调节作用

目的及方法:基于中国综合社会调查2010年数据,采用多层结构方程模型,探究中国民众公平感对社会认知的作用,及经济因素在其中的调节效应。研究结果:第一,公平感越高,则社会冲突感越低,外在政治效能感越高,越倾向于对社会不平等进行内部归因,即对于社会的整体认知更加积极; 第二,经济因素能调节公平感与社会不平等内归因的关系,具体而言,经济水平越低,则公平感对于社会不平等的内部归因正向预测作用越大。     

多维项目反应理论补偿性模型参数估计:基于广义回归神经网络集合

运用广义回归神经网络(GRNN)方法对小样本多维项目反应理论(MIRT)补偿性模型的项目参数进行估计,尝试解决传统参数估计方法样本数量要求较大的问题。MIRT双参数Logistic补偿模型被设置为二级计分的二维模型。首先,模拟二维能力参数、项目参数值与考生作答矩阵。其次,把通过主成分分析得到的前两个因子在每个题目上的载荷作为区分度的初始值以及题目通过率作为难度的初始值,这两个指标的初始值作为神经网络的输入。集成100个神经网络,其输出值的均值作为MIRT的项目参数估计值。最后,设置2×2种(能力相关水平:0.3和0.7; 两种估计方法:GRNN和MCMC方法)实验处理,对GRNN和MCMC估计方法的返真性进行比较。结果表明,小样本的情况下,基于GRNN集成方法的参数估计结果优于MCMC方法。     

儿童青少年正念量表(CAMM)在中国青少年群体中的信效度检验

目的:检验儿童青少年正念量表(CAMM)在中国青少年群体中应用的信效度,为青少年正念研究提供科学工具。方法:选取310名中学生(样本1)进行条目分析和探索性因素分析,再选取309名中学生(样本2)进行验证性因素分析、效标效度、增量效度和信度分析。结果:中文版CAMM抽取2个因素最为合适,并具有良好的结构效度、效标效度、增量效度及较高的信度。结论:中文版CAMM具有良好的心理测量学指标,可以在中国青少年群体中使用。     

镜像呈现方式对青年人和老年人汉语阅读过程的影响:眼动研究

拼音文字文本阅读研究发现,同青年人相比,老年人在阅读过程中有更多的跳读发生、向前眼跳幅度更长、回视次数更多。基于这些研究结果,研究者提出了老年人阅读的“风险阅读”策略。为探究在中文阅读过程中老年人的加工特点以及与拼音文字阅读的策略异同,实验采用镜像和正常两种方式呈现文本进行了考察。结果发现,在中文阅读过程中,相较于青年人,老年人的跳读率更低,向前眼跳幅度更小,采用的是一种更为谨慎的阅读策略。在镜像呈现的条件下,老年人与青年人之间的跳读率没有显著差异,在正常呈现的条件下,老年人的跳读率显著低于青年,表明在汉语阅读中老年人采取更加谨慎的阅读策略与其副中央凹加工能力下降,以及汉语与拼音文字两种不同书写系统的基本属性有关。     

Attitudes Toward Religion Scale: development and initial psychometric evaluation among Chinese college students

The Attitudes Toward Religion Scale (ATRS) was developed to access the level of interest in and position toward the five state-approved religions in China. Data were analysed across two samples of Chinese college students. With Sample 1 (N = 278), exploratory factor analyses were used to select the 10 ATRS items corresponding to two factors: Interest and Position. With Sample 2, confirmatory factor analyses (N = 270) cross-validated the two-factor oblique model as well as a bifactor model. Cronbach alphas of ATRS subscale scores in the two samples ranged from .75 to .85. ATRS-Interest and Position were both positively associated with number of close relationships with religious people. In addition, negative attitudes toward religion was associated with being religiously proselytised by strangers. Moreover, female students reported more favourable attitudes toward religion compared to their male counterparts. The overall results support ATRS as a psychometrically strong and promising measure.     

The effects of ongoing task absorption on event-based prospective memory in preschoolers

The current study applied a 2 × 2 experimental design to investigate the effects of ongoing task absorption on event-based prospective memory performance of children aged 3 and 5 years. Children were required to label pictures as ongoing task but to remember to refrain from picture naming and to respond to the target cues in a different way as the prospective memory task. Two differently absorbing ongoing tasks (high absorbing scenario game task vs. low absorbing computer-based task) were administered. Results indicated that prospective memory performance of 5-year-old children was significantly better than that of 3-year-old children. Ongoing task absorption affected the ongoing task performance of preschoolers, but not overall prospective memory performance. Only the 3-year-olds were negatively affected by high ongoing task absorption, which was not the case for the 5-year-olds. The findings are discussed within the light of the multiprocess theory.     

The correlations of socioeconomic status,disease activity,quality of life,and depression/anxiety in Chinese patients with rheumatoid arthritis

This study aimed (i) to investigate the relationships among socioeconomic status, disease activity, quality of life, and the psychological status in Chinese rheumatoid arthritis (RA) patients; (ii) to explore the possible risk factors of anxiety and depression. A total of 160 RA patients underwent standardized laboratory examinations and completed several questionnaires. Independent samples t-tests, χ² analyses, and logistic regression modeling were used to analyze the data. We found 30.6% RA patients were anxiety, and 27.5% had depression, which were significantly higher than the control group (7.8 and 11.7%, respectively). And there were significant correlations among education, pain, disease activity, medication adherence, functional capacity, quality of life, and anxiety/depression. Meanwhile, logistic regression analysis revealed that poor quality of life and low education level were significantly associated with anxiety/depression in RA patients. In conclusion, there were significant relationships among education, quality of life, and anxiety/depression in Chinese RA patients.     

The Effectiveness of Psychosocial Interventions Delivered by Teachers in Schools: A Systematic Review and Meta-Analysis

The growing mental health needs of students within schools have resulted in teachers increasing their involvement in the delivery of school-based, psychosocial interventions. Current research reports mixed findings concerning the effectiveness of psychosocial interventions delivered by teachers for mental health outcomes. This article presents a systematic review and meta-analysis that examined the effectiveness of school-based psychosocial interventions delivered by teachers on internalizing and externalizing outcomes and the moderating factors that influence treatment effects on these outcomes. Nine electronic databases, major journals, and gray literature (e.g., websites, conference abstract) were searched and field experts were contacted to locate additional studies. Twenty-four studies that met the study inclusion criteria were coded into internalizing or externalizing outcomes and further analyzed using robust variance estimation in meta-regression. Both publication and risk of bias of studies were further assessed. The results showed statistically significant reductions in students’ internalizing outcomes (d = .133, 95% CI [.002, .263]) and no statistical significant effect for externalizing outcomes (d = .15, 95% CI [?.037, .066]). Moderator analysis with meta-regression revealed that gender (%male, b = ?.017, p < .05), race (% Caucasian, b = .002, p < .05), and the tier of intervention (b = .299, p = .06) affected intervention effectiveness. This study builds on existing literature that shows that teacher-delivered Tier 1 interventions are effective interventions but also adds to this literature by showing that interventions are more effective with internalizing outcomes than on the externalizing outcomes. Moderator analysis also revealed treatments were more effective with female students for internalizing outcomes and more effective with Caucasian students for externalizing outcomes.