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141.
Björn Andersson Hao Luo Kseniia Marcq 《The British journal of mathematical and statistical psychology》2022,75(2):395-410
Reliability of scores from psychological or educational assessments provides important information regarding the precision of measurement. The reliability of scores is however population dependent and may vary across groups. In item response theory, this population dependence can be attributed to differential item functioning or to differences in the latent distributions between groups and needs to be accounted for when estimating the reliability of scores for different groups. Here, we introduce group-specific and overall reliability coefficients for sum scores and maximum likelihood ability estimates defined by a multiple group item response theory model. We derive confidence intervals using asymptotic theory and evaluate the empirical properties of estimators and the confidence intervals in a simulation study. The results show that the estimators are largely unbiased and that the confidence intervals are accurate with moderately large sample sizes. We exemplify the approach with the Montreal Cognitive Assessment (MoCA) in two groups defined by education level and give recommendations for applied work. 相似文献
142.
143.
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
144.
探讨在腹腔镜胆囊切除术术前应用罗哌卡因切口浸润结合术中腹腔喷洒对术后疼痛的缓解效应.将80例患者随机分为四组(各20例).试验A组:应用0.5%的罗哌卡因20ml进行胆囊床喷洒;试验B组:应用0.5%的罗哌卡因10ml进行胆囊床喷洒,同时10ml进行膈下喷洒;对照A组:采用生理盐水20ml进行胆囊床注射;对照B组:采用生理盐水10ml进行胆囊床注射,同时10ml进行膈下喷洒.对术后疼痛情况进行评价.试验A、B组术后1h、4h、8h腹腔内疼痛、切口疼痛及咳嗽时疼痛VAS评分与对照A、B组相比差异有统计学意义(P<0.05);试验B组1h、4h、8h、24h、48h肩部疼痛VAS评分与对照B组相比差异有统计学意义(P<0.05),试验A组1h、4h、8h、24h、48 h肩部疼痛VAS评分比试验B组相比明显高,差异有统计学意义(P<0.05).腹腔镜胆囊切除术术前应用罗哌卡因切口浸润结合术中腹腔喷洒,可有效减轻患者疼痛,对于促进康复具有积极作用. 相似文献
145.
通过研究高通量血液透析(HFHD)和血液透析滤过(OL-HDF)两种血液净化模式对尿毒症患者血清白介素-1β(IL-1β)、超敏C反应蛋白(hs-CRP)、降钙素原(PCT)、钙(Ca)、磷(P)、胎球蛋白A(Fetuin-A)水平的影响,旨在求其相关性.按不同血液净化模式,将维持性血液透析(MHD)患者随机分为HFHD组(A组)30例,OL-HDF组(B组)30例,健康对照组(C组)16例,通过测定A组、B组、C组透析前、A组、B组透析6个月后各项化验指标,经过统计学分析比对发现A组、B组血清Fetuin-A与IL-1β、hs-CRP、P、Ca×P呈负相关.本研究证明,MHD患者存在微炎症状态,其钙化抑制因子Fetuin-A较正常人明显降低,长期OL-HDF治疗(治疗大于6个月)对于改善MHD患者微炎症状态及升高钙化抑制因子Fetuin-A效果均明显优于HFHD. 相似文献
146.
本研究采用问卷调查法, 以某国有企业在10个地市的66个工作团队369名企业员工为调查对象, 在控制被试的教育程度、工作经验及人口统计学变量之后, 运用多层线性模型技术分析团队领导心理资本与团队成员心理资本及其组织公民行为的关系。结果发现:(1)工作团队领导心理资本对团队成员组织公民行为存在积极影响, 团队成员心理资本是领导心理资本与团队成员组织公民行为之间跨层次的中介变量; (2)工作团队领导心理资本对团队成员心理资本与组织公民行为关系的调节效应不显著。 相似文献
147.
148.
The ACE and ADE models have been heavily exploited in twin studies to identify the genetic and environmental components in phenotypes. However, the validity of the likelihood ratio test (LRT) of the existence of a variance component, a key step in the use of such models, has been doubted because the true values of the parameters lie on the boundary of the parameter space of the alternative model for such tests, violating a regularity condition required for a LRT (e.g., Carey in Behav. Genet. 35:653–665, 2005; Visscher in Twin Res. Hum. Genet. 9:490–495, 2006). Dominicus, Skrondal, Gjessing, Pedersen, and Palmgren (Behav. Genet. 36:331–340, 2006) solve the problem of testing univariate components in ACDE models. Our current work as presented in this paper resolves the issue of LRTs in bivariate ACDE models by exploiting the theoretical frameworks of inequality constrained LRTs based on cone approximations. Our derivation shows that the asymptotic sampling distribution of the test statistic for testing a single bivariate component in an ACE or ADE model is a mixture of χ 2 distributions of degrees of freedom (dfs) ranging from 0 to 3, and that for testing both the A and C (or D) components is one of dfs ranging from 0 to 6. These correct distributions are stochastically smaller than the χ 2 distributions in traditional LRTs and therefore LRTs based on these distributions are more powerful than those used naively. Formulas for calculating the weights are derived and the sampling distributions are confirmed by simulation studies. Several invariance properties for normal data (at most) missing by person are also proved. Potential generalizations of this work are also discussed. 相似文献
149.
<焦氏易林>是研究汉代宗教文化构建、演变发展的重要史料.本文从"天人感应"的神学观念、神灵的世俗化与英雄的神格化、神仙体系的无序化、长生不老的成仙追求、西王母民间信仰的兴盛发展五个方面,具体分析了<易林>所体现出的汉代宗教文化思想特征. 相似文献
150.
11月15日至16日,第四次"道教思想与中国社会发展进步"研讨会暨"天籁仙韵颂和谐"第八届道教音乐汇演在江西南昌隆重举行.此次活动由中国道教协会主办,江西省道教协会协办,南昌万寿宫和西山万寿宫承办. 相似文献