Influence diagnostics for the structural sharpe model under normal/independent distributions

A method is proposed in this paper to assess the local influence of minor perturbations for the Sharpe model when the normal distribution is replaced by normal/independent (NI) distributions. The family of NI distributions is an attractive class of symmetric heavy-tailed densities that includes as special cases the normal, t-Student, slash, and the contaminated normal distributions. Since the returns of the market are not observable, the statistical analysis is carried out in the context of an errors-in-variables model. An influence analysis for detecting influential observations (atypical returns) is developed to investigate the sensitivity of the maximum likelihood estimators. Diagnostic measures are obtained based on the conditional expectation of the complete-data log-likelihood function. The results are illustrated by using a set of shares of companies traded in the Chilean stock market.     

The empirical Bayes estimators of the parameter of the Poisson distribution with a conjugate gamma prior under Stein's loss function

For the hierarchical Poisson and gamma model, we calculate the Bayes posterior estimator of the parameter of the Poisson distribution under Stein's loss function which penalizes gross overestimation and gross underestimation equally and the corresponding Posterior Expected Stein's Loss (PESL). We also obtain the Bayes posterior estimator of the parameter under the squared error loss and the corresponding PESL. Moreover, we obtain the empirical Bayes estimators of the parameter of the Poisson distribution with a conjugate gamma prior by two methods. In numerical simulations, we have illustrated: The two inequalities of the Bayes posterior estimators and the PESLs; the moment estimators and the Maximum Likelihood Estimators (MLEs) are consistent estimators of the hyperparameters; the goodness-of-fit of the model to the simulated data. The numerical results indicate that the MLEs are better than the moment estimators when estimating the hyperparameters. Finally, we exploit the attendance data on 314 high school juniors from two urban high schools to illustrate our theoretical studies.     

Mapping Right-Wing Women’s Policy Priorities in Latin America

ABSTRACT

Do right-wing women hold unique policy priorities from that of left-wing women and right-wing men? And do right-wing women legislators represent the priorities of right-wing citizens? Right-wing women share unique gendered socialization experiences with left-wing women, but their ideology informs values and attitudes critical to policy preference formation. Political representation theories suggest that women legislators should hold distinct incentives to represent female constituents. However, institutional theories suggest right-wing women legislators may face different incentives that limit the extent to which they represent right-wing female constituents. To evaluate our expectations, we leverage survey data from the Latin American Public Opinion Project and the Parliamentary Elites of Latin America. We demonstrate how right-wing women citizens differ from left-wing women citizens across a range of policy priorities. Then, we evaluate elite priorities for these same policy issues. We find little evidence for policy priority congruency between women citizens and women legislators on the right.     

Psychometric validation of the PERMA-profiler as a well-being measure for student veterans

Abstract

Objective: The current study aims to validate the PERMA-Profiler, a well-known well-being measure, among a sample of student veterans. Participants: A sample of 205 student veterans were recruited from universities across the United States. Method: Cross-sectional research design was used in this study. Measurement structure of the PERMA-Profiler was evaluated using exploratory factor analysis (EFA). Convergent, divergent, and criterion-related validity was tested using Pearson correlation coefficients and Kruskal-Wallis test. Results: The EFA results yielded a two-factor solution for student veterans. Factors are named as emotional character strengths and performance character strengths. Conclusions: The PERMA-Profiler is a multidimensional scale with good reliability and acceptable levels of convergent, divergent, and criterion-related validity. The PERMA-Profiler can help researchers and practitioners better gauge well-being in student veterans. Implications will be discussed.     

五十年来情绪人类学发展综述——心理人类学发展的趋势

人类学百年发展历程中,始终伴随着对心理学学科理论和实践资源的汲取,随着心理学逐渐对以往科学主义、本质主义的扬弃,将现象学、认知论纳入到学科反思、人类学研究也开辟了注重个体内在化情绪的人类学研究,形成了如今颇受瞩目的情绪人类学领域。阐释学大师格尔兹对于情绪关注的研究,启发后辈学者,心理人类学正越来越多地将情绪作为研究的对象,以揭示他者文化蕴藏的深意。     

浅论近代青海女性社会地位变迁及其原因

近代是青海女性社会地位发生变迁的时期,本文从女性形体观的转变、女性教育等方面,论述了近代青海女性社会地位的变迁及其原因。     

现代民族素质的结构及其相互关系--民族素质研究之三

本文从智能素质在民族素质结构中的作用、体能素质与智能素质的关系、智能素质和传统文化及民族历史积淀对民族心理、意识素质的影响等方面,对民族素质的结构及其相互关系进行了开创性的研究.     

公共危机管理和政府责任−以SARS疫情治理为例

基于“主体−事件−客体”分析框架,结合中国60起公共危机典型事件,利用模糊集定性比较分析（fs/QCA）方法来分析影响地方政府公共危机回应有效性的必要条件和组态情况。研究发现：地方政府公共危机回应极具复杂性,不存在促成地方政府公共危机回应有效性的单个必要条件;三种类型构成了地方政府公共危机回应有效性的实现路径,即“主体驱动型”“主体−事件平衡型”“综合型”;实现地方政府公共危机回应的有效性,需要“主体−事件−客体”合力完成。

     

探究卢曼早期法律思想的宗旨与意义

对像卢曼这样的世界性思想家的研究和探讨不应大而化之,也不应仅停留在先入为主的意识形态批判层面,而是应该结合中国本土问题意识,以学术共同体集体合作的形式系统地展开精密研究,进入学说继受的新阶段,推动和滋养中国本土问题和研究的进步。卢曼的思想发展轨迹大致分为三个阶段。《法社会学》是卢曼思想第一阶段的典型代表。自第二个阶段开始,卢曼的思想走向转折与过渡,并在第三个阶段完成转向。但是,第二、三阶段的转向发展并非指全盘否定第一阶段。相反,卢曼在其思想发展早期埋下的诸多伏笔在第二、三阶段通过新概念、新命题的展现得到了强调。探讨以《法社会学》为代表的卢曼早期法律思想,对寻找其后续各理论谜语的重要线索以及理论创新的方法具有重要意义。