Simultaneous decomposition of the variance by sources and subgroups – new insights

There are two types of decompositions: of linear combinations of random variables into contributions of individual variables (sources) and associations between them, and of populations into contributions of their subpopulations. Simultaneous treatment of the two types is called for, which takes into account the correlations between sources within subpopulations and between subpopulation means. The expected values of the subcomponents are derived and their sensitivity to correlations among sources within groups and among source group means is conducted. An example is provided, in which the correlations contribute 20--25% to total variability. This additional information is hidden when decompositions are not simultaneous.     

Racial/Ethnic Minority Vocational Research Trends: An 11‐Year Update

This study extends Flores et al.'s ( 2006 ) 36‐year analysis of racial/ethnic minority (REM) career research to identify recent trends in choice of topics and leading individual and institutional contributors. The authors identified 166 articles on REM career research published from 2005 to 2015 in the Journal of Vocational Behavior, The Career Development Quarterly, the Journal of Career Assessment, and the Journal of Career Development. Of these studies, 92% were empirical, with more than three quarters of these using quantitative rather than qualitative methodology. Most frequently, the empirical studies (n = 153) were based on samples of high school (30.7%) or undergraduate (34.6%) students. The authors discuss the implications of their findings and suggest ways to expand REM career research in the future.     

NGO Strategies in an Authoritarian Context,and Their Implications for Citizenship: The Case of the People’s Republic of China

This study argues that different cities in China have different resource environments available for NGOs. Organizations react to these resource environments by constructing appropriate resource strategies, which in turn shape the characteristics and structures of the NGOs of that city. It further examines how these characteristics and structures influence the construction and performance of citizenship in an authoritarian environment. Specifically, some types of NGOs encourage Chinese citizens to be passive, while others offer a model for people to actively engage with social issues. This is aptly demonstrated in an analysis of NGOs operating across four cities—Beijing, Shanghai, Kunming, and Nanjing—which reveals three different types of resource environments and behavioral models for NGOs. We subsequently discuss the implications of each model for citizen engagement.     

Parents’ and Professionals’ Perceptions of the Services of Families of Children with Intellectual Developmental Disabilities

This study aims to investigate differences in perception among Kuwaiti parents, teachers, and employees regarding the services that are needed in different special education settings. The participants (n = 135) included 45 parents of children with intellectual developmental disabilities (IDD), 63 teachers in special education schools, and 27 employees working in the Higher Council of the Disabled. A survey was conducted using Hassan’s (The needs of parents of children with disabilities in relationship with child’s age, gender, and type of disability, 1992) Arabic version of the Family Need Inventory. The findings showed differences in perception among parents, teachers, and employees regarding what they consider to be the most important services for families of children with IDD. Another result showed significant differences in perception among the three groups regarding services (match or/and mismatch of responses), except for 3 out of 35 types of services. Suggestions and implications are discussed to provide information to social service providers to help them evaluate the laws that pertain to disability in Kuwait. The findings of this study will help social service providers determine and implement laws that meet the needs of parents of children with IDD and give them the right to be full partners in their children’s education.     

DISCRIMINATION, WOMEN, AND WORK: Processes and Variations by Race and Class

Research on gender and workplace stratification has made clear that persistent employment, wage, and mobility gaps exist, and that discrimination at organizational and interactional levels is playing a role. Few studies, however, have been able to directly capture processes involved. In this article, we draw on unique qualitative and quantitative data pertaining to verified cases of workplace sex and race discrimination (1988 to 2003), and analyze the discriminatory experiences of African-American and white women across various occupational statuses. Notable are high levels of discriminatory firing for both groups, but higher instances of race-based promotional discrimination for black women—a pattern partially linked to their disparate concentration in sex-segregated workplaces and in positions of lower occupational prestige. Our qualitative immersion into case materials reveals influential mechanisms and employer justifications, unique manifestations of differential treatment on the job, and the use of "soft skill" criteria in gatekeeper decision making. We conclude by discussing important dimensions of workplace discrimination for women, variations by social class and race status, and how complexities of status matter for what women experience and gatekeeper behavior.     

Employment and earnings of foreign-born scientists and engineers

Population Research and Policy Review -     

Ecosystem resilience, specialized adaptation and population decline: A modern Malthusian theory

The purpose of this article is to construct a theoretical framework characterizing the interactions among economic development, ecosystem equilibrium and possible population decline, and to discuss the population dynamics in the very long run. In our framework, economic activities bridge population and environment. On the one hand, human beings reform the environment through economic activities; on the other hand, economic activities decrease environmental resilience and increase the possibility of an environmental change in a discontinuous and irreversible pattern, as described in Arrow et al. (1995). Furthermore, a highly developed economy also causes over-specialization of human adaptation, which tends to exaggerate the impact of an environmental change on human population size. Received: 19 January 1999/Accepted: 3 July 1999     

Inferences on regression coefficients in a regression model under heteroscedasticity and robustness with respect to departure from normality

In this paper we consider a simple linear regression model under heteroscedasticity and nonnormality. A statistical test for testing the regression coefficient is then derived by assuming normality for the random disturbances and by applying Welch's method. Some Monte Carlo studies are generated for assessing robustness of this test. By combining Tiku's robust procedure with the new test, a robust but more powerful test is developed.