Evaluating the effectiveness of four Hong Kong antismoking cartoon posters with humor and threat elements

Although cartoons are widely used in health communication, their effectiveness has seldom been tested. In this study, the effects of four humor–threat antismoking cartoon posters are evaluated in a sample of 12- to 15-year-olds (n = 183) in Hong Kong. The five-group comparison (including the control group) revealed that these posters did not increase antismoking attitudes in the sample but did decrease antismoking behavioral intentions. The better liked, more humorous, and more frightening posters did not produce increased antismoking attitudes or behavioral intentions. These findings warrant the development of theories to clarify the role of humor in health communication. Although cartoons are well liked by adolescents, practitioners must be aware of the possible negative effects of humor in cartoon-based messages.     

Administrative Buy-in for User Participation in Managing Social Services

Abstract

This paper reports the findings of a study conducted in Hong Kong on the value position of the social service providers regarding user participation in service management. Using a survey instrument to collect data from 642 service providers in an elderly service organization, the study explored whether or not the value position had an effect on the views of the service providers on the structural set-up for user participation, and whether the value position of the professional staff was significantly different from that of the non-professional staff. Exploratory factor analyses (EFA), confirmatory factor analyses (CFA) and structural equation modeling (SEM) were applied in the analysis. The findings identify that administrative buy-in needed to support shared decision-making with the welfare service users has not been achieved in the studied organization, owing to the absence of value commitment to the user participation cause. As the professional staff was more supportive of values favoring user participation, the paper calls for an acculturation process that would be stimulated and led by professionals to develop a participatory culture. The paper also recommends conducting similar study on a larger scale and qualitative inquiry into factors influencing the formation of values about user participation in future research.     

略论福康安廉政爱民思想

《钦定藏内善后章程二十九条》是清朝治理西藏的一部极其重要的法典,也是研究西藏历史不可或缺的重要文献。不少学者根据章程的内容对福康安的政治、经济、军事等一系列思想进行了研究,但几乎没见到关于其廉政爱民思想的说法。文章通过对章程的部分条款进行分析研究,认识到福康安廉政爱民的思想非常重要,对现实社会具有一定借鉴作用。     

Racial/ethnic segregation and health disparities: Future directions and opportunities

Health researchers have investigated the association between racial segregation and racial health disparities with multilevel approaches. This study systematically reviews these multilevel studies and identifies broad trends and potential directions for future research on racial segregation and health disparities in the US. After searching databases including CINAHL and MEDLINE, we systematically reviewed 66 articles published between 2003 and 2019 and found four major gaps in racial/ethnic segregation and health disparities: (a) the concept of segregation was rarely operationalized at the neighborhood level, (b) except for the evenness and exposure dimension, other dimensions of segregation are overlooked, (c) little attention was paid to the segregation between whites and non‐black minorities, particularly Hispanics and Asians, and (d) mental health outcomes were largely absent. Future directions and opportunities include: First, other segregation dimensions should be explored. Second, the spatial scales for segregation measures should be clarified. Third, the theoretical frameworks for black and non‐black minorities should be tested. Fourth, mental health, substance use, and the use of mental health care should be examined. Fifth, the long‐term health effect of segregation has to be investigated, and finally, other competing explanations for why segregation matters at the neighborhood level should be answered.     

Why does transformational leadership matter for employee turnover? A multi-foci social exchange perspective

Drawing on social exchange theory, the present study investigates the underlying mechanisms through which transformational leadership influences employee turnover. Leader–member exchange (LMX) and affective commitment (AC) are proposed as supervisor-based and organization-based social exchange mechanisms respectively, exemplifying how social exchange processes occur between an employee and his/her supervisor, and between the employee and his/her organization as a whole to underpin the effect of transformational leadership on turnover outcomes. Results of structural equation modeling on a sample of 490 full-time employees working in a large telecommunication company in the PRC provided support for the notion that transformational leadership is related to both social exchange mechanisms – LMX and AC – turnover intention and turnover behavior. Furthermore, the results revealed that AC rather than LMX mediated the link between transformational leadership and turnover intention. Turnover intention also only mediated the relationship between AC and turnover behavior over time.     

Assessing local cluster influence in generalized linear mixed models

This paper investigates local influence measures for assessing cluster influence in generalized linear mixed models. Several cluster-specific perturbation schemes are considered. The proposed local influence diagnostics are applied to analyse maternity length of inpatient stay data where individual observations are nested within hospitals and the relative performance of hospitals is of interest.     

Estimation of p(y<x) in the gamma case

We consider estimation of P(Y<X) when X?Γr(M,λ) and Y?Γ(N,μ) are independent with M and N known. A concise representation of the UMVUE and several representations for the MLE are derived. Closed-form exact expressions of both MSE's and the bias of the MLE are obtained. Large-sample results are given and numerical comparison of the two point estimators is made. Confidence intervals are given.     

Estimation of High-Frequency Volatility: An Autoregressive Conditional Duration Approach

We propose a method to estimate the intraday volatility of a stock by integrating the instantaneous conditional return variance per unit time obtained from the autoregressive conditional duration (ACD) model, called the ACD-ICV method. We compare the daily volatility estimated using the ACD-ICV method against several versions of the realized volatility (RV) method, including the bipower variation RV with subsampling, the realized kernel estimate, and the duration-based RV. Our Monte Carlo results show that the ACD-ICV method has lower root mean-squared error than the RV methods in almost all cases considered. This article has online supplementary material.     

A Diagnostic Test for the Multinomial Logit Model

I propose a Lagrange multiplier test for the multinomial logit model against the dogit model (Gaudry and Dagenais 1979) as the alternative hypothesis. In view of the well-known drawback of the restrictive property of independence from irrelevant alternatives implied by the multinomial logit model, a specification test has much to recommend it. Finite sample properties of the test are studied using a Monte Carlo experiment, and the test's power against the nested multinomial logit model and the multinomial probit model is investigated. The test is found to be sensitive to the values of the regression parameters of the linear random utility function.