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排序方式: 共有4121条查询结果,搜索用时 31 毫秒
151.
Structural equation models are increasingly used as a modeling tool for multivariate time series data in the social and behavioral
sciences. Standard error estimators of SEM models, originally developed for independent data, require modifications to accommodate
the fact that time series data are inherently dependent. In this article, we extend a sandwich-type standard error estimator
of independent data to multivariate time series data. One required element of this estimator is the asymptotic covariance
matrix of concurrent and lagged correlations among manifest variables, whose closed-form expression has not been presented
in the literature. The performance of the adapted sandwich-type standard error estimator is evaluated using a simulation study
and further illustrated using an empirical example. 相似文献
152.
The present research explored the hypothesis that strengthened attainment means–goal association leads to enhanced performance in goal pursuit. We hypothesize that because of the instrumental nature of means–goal association, strengthened associative strength leads to greater instrumentality expectancy of the means, which elicits greater motivation in the pursuit and hence better actual performance. We demonstrated in four studies that when the means is believed to facilitate goal attainment, a strong (vs. weak) means–goal association leads to greater performance in goal pursuit. Conversely, when the means is perceived to undermine goal attainment, a strong (vs. weak) association results in worse performance in goal pursuit. 相似文献
153.
The objective of this study investigated cognitive impairments and their correlations with fractional anisotropy (FA) and mean diffusivity (MD) in patients with neuromyelitis optica (NMO) without visible lesions on conventional brain MRI during acute relapse. Twenty one patients with NMO and 21 normal control subjects received several cognitive tests to assess cognitive function. Head diffusion tensor imaging (DTI) of all patients with NMO were collected with a 3-T MR system. Correlations of cognitive test scores and whole brain FA and MD were examined by voxel-based analysis. Region-of-interest analysis was applied to the significantly correlated regions which the most frequently appeared. We found that NMO patients without visible brain lesions had significantly impaired learning and memory, decreased information processing speed, and damaged attention compared with normal control subjects. These impaired cognitive domains were significantly correlated with FA and MD in local regions of corpus callosum, anterior cingulate and medial frontal cortex. In corpus callosum of NMO patients, mean FA was significantly lower and mean MD higher than normal control subjects. Our findings suggest that cognitive impairments in learning and memory, information processing speed and attention occur in NMO patients without visible brain lesions during acute relapse. The impairments in immediate and short-term memory in NMO patients may be due to information encoding deficits in the process of information acquisition. The corpus callosum of such patients may have local microscopic damages that play a role in cognitive impairments during acute relapse. 相似文献
154.
Zhonghua Zhang 《应用心理检测》2021,45(5):331
In this study, the delta method was applied to estimate the standard errors of the true score equating when using the characteristic curve methods with the generalized partial credit model in test equating under the context of the common-item nonequivalent groups equating design. Simulation studies were further conducted to compare the performance of the delta method with that of the bootstrap method and the multiple imputation method. The results indicated that the standard errors produced by the delta method were very close to the criterion empirical standard errors as well as those yielded by the bootstrap method and the multiple imputation method under all the manipulated conditions. 相似文献
155.
156.
“移情”是精神分析学、移情美学、移情心理学、移情伦理学和移情现象学的一个核心概念,但它是一个典型的“同名异义词”。精神分析学的“移情”特指弗洛伊德提出的“übertragung”概念,而后四种理论的“移情”指的是“Einfühlung”,本质上是“共情”或“同感”。在精神分析学内部,移情与投射、反移情、共情等概念紧密相关,而不同流派对这些概念的理解不仅不同甚至完全对立。在精神分析学外部,移情美学、移情心理学和移情伦理学虽然与精神分析学共享了投射或“移置”意义上的“移情”概念,但二者的用法存在本质差异。胡塞尔的现象学反对在投射或移置的意义上理解移情,把移情看作自我以第一人称方式对他人精神生活的深入感受、对异己主体及其体验行为的经验。现象学的移情概念既有助于澄清“移情”(übertragung)与“同感”(Einfühlung)的混用所造成的误解,也有助于理解二者间的关联和作用机制。 相似文献
157.
研究以心理健康双因素模型为视角,运用元分析技术梳理了留守儿童歧视知觉与积极和消极心理健康的关系,并探究了影响其关系的调节变量。通过文献检索与筛选,共27篇中英文文献,56个独立样本纳入元分析,包含被试17146名。结果显示,歧视知觉与积极心理健康指标呈显著的负相关关系(r=-0.298),与消极心理健康指标呈显著的正相关关系(r=0.365)。调节效应分析发现,留守儿童歧视知觉与积极心理健康的关系受到歧视知觉测量工具的影响,与消极心理健康的关系受到歧视知觉测量工具、学龄段以及消极结果类型的影响。同时,元回归分析发现,文献年份对歧视知觉与积极心理健康指标关系的调节效应显著; 性别对歧视知觉与积极和消极心理健康关系的调节作用均不显著。研究结果进一步明确了留守儿童歧视知觉与积极和消极心理健康的关系,为探索提升留守儿童心理社会适应的新路径提供了借鉴。 相似文献
158.
159.
Xiao He Langlais Michael R. Anderson Edward Greene Shannon 《Journal of child and family studies》2022,31(6):1582-1595
Journal of Child and Family Studies - Despite many mothers’ interest in establishing romantic relationships following divorce, some worry about the impacts of dating transitions, such as... 相似文献
160.
Yao Xiaonan Wu Junhui Guo Zhen Yang Ying Zhang Mengyuan Zhao Yudi Kou Yu 《Journal of child and family studies》2022,31(7):2039-2049
Journal of Child and Family Studies - Drawing on self-determination theory and problem-behavior theory, we tested the relation between parental psychological control and adolescents’... 相似文献