Bayesian and Robust Bayesian analysis under a general class of balanced loss functions

For estimating an unknown parameter θ, we introduce and motivate the use of balanced loss functions of the form L_{r, w, d0}(q, d)=wr(d₀, d)+ (1-w) r(q, d){L_{\rho, \omega, \delta_0}(\theta, \delta)=\omega \rho(\delta_0, \delta)+ (1-\omega) \rho(\theta, \delta)}, as well as the weighted version q(q) L_{r, w, d0}(q, d){q(\theta) L_{\rho, \omega, \delta_0}(\theta, \delta)}, where ρ(θ, δ) is an arbitrary loss function, δ ₀ is a chosen a priori “target” estimator of q, w ? [0,1){\theta, \omega \in[0,1)}, and q(·) is a positive weight function. we develop Bayesian estimators under L_{r, w, d0}{L_{\rho, \omega, \delta_0}} with ω > 0 by relating such estimators to Bayesian solutions under L_{r, w, d0}{L_{\rho, \omega, \delta_0}} with ω = 0. Illustrations are given for various choices of ρ, such as absolute value, entropy, linex, and squared error type losses. Finally, under various robust Bayesian analysis criteria including posterior regret gamma-minimaxity, conditional gamma-minimaxity, and most stable, we establish explicit connections between optimal actions derived under balanced and unbalanced losses.     

Does the retirement consumption puzzle differ across the distribution?

Previous research has repeatedly found a puzzling one-time drop in the mean and median of consumption at retirement, contrary to the predictions of the life-cycle hypothesis. However, very little is known as to whether these effects vary across the consumption distribution. This study expands upon the previous work by examining changes in the consumption distribution between the non-retired and the retired using quantile regression techniques on pseudo-cohorts from the cross-sectional data of the 1990–2007 Consumer Expenditure Survey. The results indicate that there are insignificant changes between these groups at the lower end of the consumption distribution, while there are significant decreases at the higher end of this distribution. In addition, these changes in the distribution are gradually larger in magnitude when moving from the lower end to the higher end, which is found using several different measures of consumption. Work-related expenditures are instead shown to decrease uniformly across the consumption distribution. This evidence reveals that there is a progressive distributional component to the retirement consumption puzzle.     

Asset or Liability: Transnational Links and Political Participation of Foreign‐Born Citizens in Taiwan

Viewed as outsiders clinging onto links with their country of origin, immigrants do not often feature positively in electoral politics in their host society. Challenging this conventional view, this article examines how immigrants make use of their transnational ties to foster their political participation in the host state. This exploration is conducted through our study of the political participation of Vietnamese and Chinese immigrants in Taiwan. Our research finds that transnational ties are politicized by the mainstream political parties. However, such politicization does not necessarily restrict immigrants’ agency and their sociopolitical space for political participation. Their transnational ties constitute a dynamic sociopolitical field in which these maintained connections are acted upon and give rise to a variety of strategies for responding to issues affecting their interests.     

On An Intriguing Distributional Identity

For a continuous random variable X with support equal to (a, b), with c.d.f. F, and g: Ω₁ → Ω₂ a continuous, strictly increasing function, such that Ω₁∩Ω₂?(a, b), but otherwise arbitrary, we establish that the random variables F(X) ? F(g(X)) and F(g^{? 1}(X)) ? F(X) have the same distribution. Further developments, accompanied by illustrations and observations, address as well the equidistribution identity U ? ψ(U) = ^dψ^{? 1}(U) ? U for U ～ U(0, 1), where ψ is a continuous, strictly increasing and onto function, but otherwise arbitrary. Finally, we expand on applications with connections to variance reduction techniques, the discrepancy between distributions, and a risk identity in predictive density estimation.     

Making foreign women the mother of our nation: the exclusion and assimilation of immigrant women in Taiwan

Citizenship awarding is politicised. Conceiving female marriage migration as a national threat, Taiwan's citizenship legislation is consciously designed and purposefully utilised to achieve exclusion and assimilation. Driven by a nationalistic impetus, it shows how Taiwan imagines itself as a modern, prosperous and homogenous nation and projects upon the immigrant outsiders as a threat to its self-identity. Examined through immigrant women's lived experiences, this citizenship legislation is biased by gender, class and ethnicity. The implementation of the legislation is not only an example of symbolic politics but also banal nationalism realised at grassroots level in the private domain. Immigrant women's lived experiences show that exclusion and assimilation stemmed from banal nationalism is not just an operation of symbolic politics but is also enmeshed with their everyday life.     

Robust signed-rank estimation and variable selection for semi-parametric additive partial linear models

A fully nonparametric model may not perform well or when the researcher wants to use a parametric model but the functional form with respect to a subset of the regressors or the density of the errors is not known. This becomes even more challenging when the data contain gross outliers or unusual observations. However, in practice the true covariates are not known in advance, nor is the smoothness of the functional form. A robust model selection approach through which we can choose the relevant covariates components and estimate the smoothing function may represent an appealing tool to the solution. A weighted signed-rank estimation and variable selection under the adaptive lasso for semi-parametric partial additive models is considered in this paper. B-spline is used to estimate the unknown additive nonparametric function. It is shown that despite using B-spline to estimate the unknown additive nonparametric function, the proposed estimator has an oracle property. The robustness of the weighted signed-rank approach for data with heavy-tail, contaminated errors, and data containing high-leverage points are validated via finite sample simulations. A practical application to an economic study is provided using an updated Canadian household gasoline consumption data.     

Workplace aggression against health care workers,law enforcement officials,and bus drivers: Differences in prevalence,perceptions, and psychological consequences

Investigations into workplace aggression (WPA) remain largely occupation specific, with few studies using a comparative approach. The aim of the present study was to compare the health care, law enforcement, and public transportation sectors with regards to the prevalence of different types of WPA, the perceptions of workers toward WPA, and the psychological consequences of such acts. A cross-sectional survey was completed by 1,774 workers in Canada. Multinomial regressions were utilized to address the objectives. Findings revealed that verbal abuse victimization was particularly common in bus drivers, witnessing death threats was most frequent among law enforcement officials, and witnessing all types of WPA was most common among health care workers. Although bus drivers did not normalize WPA, they feared complaining about violence to their employer and thought it useless to talk it about unless wounds were visible. Fear of complaining about violence to colleagues was prevalent in health care and law enforcement, both sectors in which WPA was normalized. Finally, flashbacks and irritability following WPA were most likely to affect bus drivers whereas health care workers experienced hypervigilance to a greater extent. Strategies to tailor primary, secondary, and tertiary prevention according to these distinctions are suggested to offer a better-informed response to WPA.     

Leaving an Institution in Flanders (Belgium): A Road to Homelessness?

People living in an institution will leave this residential context one day and have to proceed to a stable independent way of living. This transition is not without difficulties as it turns out this socially vulnerable group runs an increased risk of becoming homeless. Research in Flanders (Belgium) has shown that a considerable share of the homeless population has previously stayed in an institutional setting, mostly in youth care (48.7%), psychiatric (34.4%) and penitentiary (33.1%) institutions. Moreover, the share of homeless people with a history in one of these institutions has increased in the past decades. Institution leavers, face at least three obstacles to a stable housing situation in Flanders: a lack of affordable housing, a lack of access to (non-residential) social assistance and personal difficulties in coping with living independently. Yet, there are several programs that support institution leavers and prepare them for the transition to an independent living situation and legal developments that strengthen their position in society and on the housing market. In this paper, we explore these initiatives and developments in three case studies (Antwerp, Ghent and Leuven). Based on in-depth interviews with “street-level bureaucrats” who work in these institutions (youth care, psychiatric and penitentiary settings), social support services and social housing organizations, we reconstruct the pathways of institution leavers to the housing market, the support they receive and the experienced difficulties.     

Psychological Vulnerability and Problem Gambling: The Mediational Role of Cognitive Distortions

Despite numerous studies demonstrating the influence of cognitive distortions on gambling problem severity, empirical data regarding the role of psychological vulnerability on the latter is limited. Hence, this study assesses the mediating effect of cognitive distortions between psychological vulnerability (personality and mood), and gambling problem severity. It also verifies whether the relationships between these variables differs according to the preferred gambling activity. The sample is composed of 272 male gamblers [191 poker players; 81 video lottery terminal (VLT) players] aged between 18 and 82 years (M = 35.2). Bootstrap analysis results revealed that cognitive distortions mediate the effect of narcissism on gambling problem severity for both groups. The level of depression for VLT players significantly predicted gambling problem severity, both directly and indirectly via the mediating effect of cognitive distortions. Mediation analyses also indicated that narcissism had an indirect impact on problem gambling through cognitive distortions for both groups. These findings suggest that certain vulnerabilities related to personality and mood may influence cognitive distortion intensity and gambling problem severity. In addition, psychological vulnerabilities could differ based on preferred gambling activity. These results may be useful for prevention policies, identifying high risk gamblers and planning psychological interventions.     

Just another brick in the wall? The relationship between classroom-based political education and the political interest of young adults in Switzerland

This article asks whether political education at upper secondary school – i.e. shortly before or at the age when young people receive the right to vote – affects individual political interest as well as differences in political interest between social groups. Empirically, we use a novel data set combining individual student data with information on classroom-based political education as well as teacher characteristics. We do not find support for a more or less automatic and positive effect of classroom-based political education on young people’s political interest. Whereas we analyzed three dimensions of political education (knowledge, skills, arousing interest in politics), the skills dimension was the only one that exhibited a consistent positive (and mostly significant) relationship with young peoples’ political interest. Moreover, classroom-based political education seems not to compensate for a lack of political socialization at home but rather tends to affect students with politically interested parents most strongly.