Online Calibration Via Variable Length Computerized Adaptive Testing

Item calibration is an essential issue in modern item response theory based psychological or educational testing. Due to the popularity of computerized adaptive testing, methods to efficiently calibrate new items have become more important than that in the time when paper and pencil test administration is the norm. There are many calibration processes being proposed and discussed from both theoretical and practical perspectives. Among them, the online calibration may be one of the most cost effective processes. In this paper, under a variable length computerized adaptive testing scenario, we integrate the methods of adaptive design, sequential estimation, and measurement error models to solve online item calibration problems. The proposed sequential estimate of item parameters is shown to be strongly consistent and asymptotically normally distributed with a prechosen accuracy. Numerical results show that the proposed method is very promising in terms of both estimation accuracy and efficiency. The results of using calibrated items to estimate the latent trait levels are also reported.     

华人社会中的宗教信仰与公共参与:以台湾地区为例

本文利用台湾社会变迁调查数据对华人社会中宗教信仰与公共参与进行了分析.总体上,宗教信仰有助于人们的捐献行为和志愿行动这两类公共参与形式.虽然不同宗教信仰的信徒在公共参与方面存在着程度的差异,但是这种差异在控制信徒与宗教的组织性整合程度后变得不显著.有研究认为东方宗教的功利性格无助于提升民众公共参与,但我们的分析并不支持这一观点.组织程度高的中国传统教派与基督教在促进信徒公共参与方面水平相仿,但在自认为是佛教徒的被访者中,有明确宗派归属的佛教徒与无宗派归属的信众,在公共参与行为上存在的显著差异.这意味着造成差异的原因不在于其教义来自东方还是西方,而在于宗教的组织化程度.只要能够促进教徒之间的交流与交往、加强教徒与组织之间的联系、并通过必要的集体仪式和活动增加教徒对于宗教的认同,就可能提升信徒的公共参与水平.     

冠脉介入治疗应用存在的问题及应对策略

冠脉介入治疗是近几十年来发展迅速的一种治疗方法,使用该技术的数量在不断增长,但同时也存在着过度使用的情况。患者的主观意愿、医生过度追求经济效益、介入治疗适应证扩大等是其主要原因。加强宣传教育、完善卫生管理制度,提高医生职业道德修养、制定严格的冠脉介入治疗指南才能科学合理地应用介入治疗造福冠心病患者。     

呼吸机依赖患者撤机失败原因及对策

机械通气是近年来抢救呼吸衰竭患者的重要生命支持手段,但使用呼吸机的时间超过2周可导致撤机困难。本文详细分析了诸如心理障碍、营养不良、心肺功能不全以及撤机方法不当等各种可导致困难撤机的原因,并针对各个原因提出相应的治疗及护理对策,从而降低临床上困难撤机的发生率。     

用于项目生成的认知模型的构建与比较——以矩阵完成问题为例

项目生成是一种新的测验编制技术,它可以弥补传统测验编制技术的缺陷.使用该技术编制测验,要进行大量的前期工作,如必须要了解和归纳所编测验中项目的所有刺激特征,据此建立认知模型,再将认知模型与心理计量模型联合,构建能预测新生成项目难度的数学模型等.该研究以矩阵完成问题为例,在带约束的两参数Logistic模型的基础上,通过对构建的几个认知模型的比较,挑选合适的认知模型为矩阵完成问题的项目生成研究服务.研究结果表明,自建的认知模型能够满足矩阵问题项目生成的要求.     

震后民族地区初中生应付方式与心理健康关系研究

该研究采用《初中生心理健康问卷》和《应付方式问卷》,对496名"5.12"汶川大地震民族地区的初中生心理健康水平和应付方式进行了调查。结果发现:1)灾区民族初中生的心理健康得分较高,各因子相关性较强;2)性别和年级方面大部分心理健康因子差异显著;3)应付方式各因子间呈显著低相关;4)解决问题、自责、幻想等应付方式对震后民族地区初中生的心理健康有显著预测作用。     

视觉客体在工作记忆中的累积构建

本研究采用变化觉察范式,以包含高、低空间频率信息的形状为刺激材料,探讨客体表征在工作记忆中的构建。结果发现,低频形状的工作记忆绩效显著优于高频形状,且二者辨别力的差别随SOA延长逐渐消失,说明低频信息优先进入视觉工作记忆。该结果支持工作记忆中客体表征的构建并非采用"全或无"的方式,而可能采用累积加工方式的假设。     

庚寅年中国内地正一道授箓活动在江西龙虎山天师府举行

<正>11月9日至13日(农历十月初四至初八),即道教传统的三会日期间(正月初五上会,七月初七中会,十月初五下会),中国内地正一道授箓活动在江西龙虎山嗣汉天师府隆重举行。来自内地19个省、自治区、直辖市的237名箓生参加了授箓活动。此次授箓活动由中国道教     

Remuneration differences in the emerging economies of China and India

Emerging economies by definition tend to be less dependent on expatriate skills and labour than lower-income countries, yet remuneration (pay plus benefits) differences between expatriate and local workers persist in them to some degree. According to relative deprivation theory, economic development paradoxically elevates the salience of relatively small gaps in remuneration. We therefore expected workers to report injustice and demotivation regarding relative remuneration, despite the closing of remuneration gaps between expatriate and local workers due to the economic development of recent years. To explore that possibility, 482 skilled professionals from a variety of sectors and organizations in two emerging economies, India (n = 233, response rate = 54%) and China (n = 249, response rate = 58%), participated in the research. International salaries were greater than local salaries by a factor of 2.73:1 in India and 1.90:1 in China; these mean ratios bordered on intolerable in the India sample and were largely tolerable among the sample from China. In both countries, differently remunerated workers differed in their justice cognitions and their demotivation, with lowered motivation and fewer justice cognitions in the locally salaried, local workers. These differences were however more statistically significant between people working in India than in China. Insofar as the motivational and justice gaps persisted, the findings support relative deprivation theory. Insofar as the same gaps appear to be sharper in the country with the higher-not lower-mean remuneration differential, they do not. An in-country workshop with local experts who interpreted the findings (in India), and content analysis of the participants' recommendations (in China) jointly recommended linking remuneration to (i) workplace performance instead of (ii) economy-of-origin, to help promote (iii) fairness.     

Analogical and category-based inference: a theoretical integration with Bayesian causal models

A fundamental issue for theories of human induction is to specify constraints on potential inferences. For inferences based on shared category membership, an analogy, and/or a relational schema, it appears that the basic goal of induction is to make accurate and goal-relevant inferences that are sensitive to uncertainty. People can use source information at various levels of abstraction (including both specific instances and more general categories), coupled with prior causal knowledge, to build a causal model for a target situation, which in turn constrains inferences about the target. We propose a computational theory in the framework of Bayesian inference and test its predictions (parameter-free for the cases we consider) in a series of experiments in which people were asked to assess the probabilities of various causal predictions and attributions about a target on the basis of source knowledge about generative and preventive causes. The theory proved successful in accounting for systematic patterns of judgments about interrelated types of causal inferences, including evidence that analogical inferences are partially dissociable from overall mapping quality.