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71.
Chi-Rong Li 《Journal of Statistical Computation and Simulation》2017,87(10):1940-1950
This study constructs a simultaneous confidence region for two combinations of coefficients of linear models and their ratios based on the concept of generalized pivotal quantities. Many biological studies, such as those on genetics, assessment of drug effectiveness, and health economics, are interested in a comparison of several dose groups with a placebo group and the group ratios. The Bonferroni correction and the plug-in method based on the multivariate-t distribution have been proposed for the simultaneous region estimation. However, the two methods are asymptotic procedures, and their performance in finite sample sizes has not been thoroughly investigated. Based on the concept of generalized pivotal quantity, we propose a Bonferroni correction procedure and a generalized variable (GV) procedure to construct the simultaneous confidence regions. To address a genetic concern of the dominance ratio, we conduct a simulation study to empirically investigate the probability coverage and expected length of the methods for various combinations of sample sizes and values of the dominance ratio. The simulation results demonstrate that the simultaneous confidence region based on the GV procedure provides sufficient coverage probability and reasonable expected length. Thus, it can be recommended in practice. Numerical examples using published data sets illustrate the proposed methods. 相似文献
72.
Is ethnic prejudice declining in Britain? Change in social distance attitudes among ethnic majority and minority Britons
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Most literature on racial prejudice deals with the racial attitudes of the ethnic majority and ethnic minorities separately. This paper breaks this tradition. We examine the social distance attitudes of white and non‐white British residents to test if these attitudes follow the same trends over time, whether they are driven by the same social processes and whether they are inter‐related. We have three main findings. Firstly, social distance from other ethnic groups has declined over time for both white and ethnic minority Britons. For the white majority there are both period and cohort elements to this decline. Secondly, we see some evidence that social distance between the majority and minority groups is reciprocal. Specifically, minorities who experience rejection by the white British feel a greater sense of distance from them. Thirdly, we find that all groups share the perception of the same ethnic hierarchy. We see evidence of particularly widespread hostility towards Muslim Britons from all ethnic groups suggesting that Muslims are singled out for negative attention from many British residents of all other backgrounds, including a large number who do not express hostility to other groups. 相似文献
73.
Demographic research has paid much attention to the impact of childhood conditions on adult mortality. We focus on one of the key aspects of early life conditions, sibling group size, and examine the causal effect of growing up in a large family on mortality. While previous studies have focused on low- or middle-income countries, we examine whether growing up in a large family is a disadvantage in Sweden, a context where most parents have adequate resources, which are complemented by a generous welfare state. We used Swedish register data and frailty models, examining all-cause and cause-specific mortality between the ages of 40 and 74 for the 1938–72 cohorts, and also a quasi-experimental approach that exploited multiple births as a source of exogenous variation in the number of siblings. Overall our results do not indicate that growing up in a large family has a detrimental effect on longevity in Sweden. 相似文献
74.
Previous research has largely ignored the relationship between sexual orientation judgement accuracy, confidence, and attitudes toward homosexuality. In an online study, participants (N = 269) judged the sexual orientation of homosexual and heterosexual targets presented via a series of facial photographs. Participants also indicated their confidence in each judgment and completed the Modern Homonegativity Scale (Morrison & Morrison, 2002). We found that (1) homosexual men and heterosexual women were more accurate when judging photographs of women as opposed to photographs of men, and (2) in heterosexual men, negative attitudes toward homosexual men predicted confidence and bias when rating men’s photographs. Findings indicate that homosexual men and heterosexual women are similar in terms of accuracy in judging women’s sexuality. Further, especially in men, homophobia is associated with cognitive biases in labeling other men but does not have a relationship with increased accuracy. 相似文献
75.
Maykel Verkuyten 《Journal of ethnic and migration studies》2017,43(1):137-155
Using data from three survey studies, this paper examines the support for the democratic political organisation of Muslims among Muslim immigrants in the Netherlands (Studies 1, 2, and 3) and Germany (Study 3). Using a social psychological perspective, support is examined in relation to religious group identification, Muslim linked fate, perceived discrimination, fundamentalist religious belief, and host national identification. The findings in all three studies show support for the political organisation of Muslims. Furthermore, higher religious group identification and higher linked fate were associated with stronger support. More discrimination and more fundamentalist beliefs were also associated with stronger support, and part of these associations was mediated by linked fate. National identification was not associated with support for the political organisation of Muslims. 相似文献
76.
Rubia R. Valente 《Race Ethnicity and Education》2017,20(6):851-864
Brazil has high levels of socio-economic inequality and an inequitable distribution of access to higher education. How much of this inequality is associated with race or class is an important question in light of the current debate over affirmative action and the suitability of race and social targeted policies. There are those who claim that racial disparities in the educational system are a result of students’ social status and not a result of racism, while others believe race is an important factor that superposes the effect of class. This study uses national survey data from Brazil’s Exame Nacional do Ensino Médio (National Secondary Education Exam [ENEM]) to examine the relationship between race and access to higher education of high school students between 2004 and 2008. The results document a vicious circle which connects the schooling of the young with their race, socio-economic status, and university attendance. 相似文献
77.
Natalia Tchistiakova 《Identities: Global Studies in Culture and Power》2016,23(6):725-744
Based upon the data from qualitative studies of eight national minorities between the Baltic and the Danube, this article investigates the formation of European identification among members of the minority groups representing ‘split nations’ along the new eastern borders of the enlarged EU. The analysis reveals mechanisms of the formation of supranational identification by focusing on the relationships between subnational, national and European identifications to ascertain the degree of interconnectedness of these identification levels. These relationships are examined in the context of the potential impact of perceived ethnic conflict and utilitarian expectations of socio-economic and cultural gains from the process of European integration. 相似文献
78.
目前,新生代农民工仍然在就业领域内面临着一系列的歧视,对于发达的珠三角和长三角地区而言,积极推进体面劳动,让新生代农民工不仅有一份工作,而且有一份满意的工作,应当是当前和未来相当长时期内改善民生的重心所在,为此必须要在思想观念和具体的体制机制等方面进行相应的调整。 相似文献
79.
Prior research has devoted considerable attention to the relationship between the racial and ethnic composition of jobs and various indicators of organizational attachment. Fewer studies, however, examine how workplace racial composition affects individuals’ experiences of racial discrimination or how these experiences impact workers’ organizational attachment. To address this lacuna, we first examine the effects of workplace racial composition on perceived racial and ethnic discrimination. Next, we examine whether perceived racial discrimination mediates the association between racial composition and organizational attachment observed in prior studies. Finally, we explore whether these relationships are similar (symmetric) or different (non-symmetric) for non-Whites and Whites. The analyses indicate: (1) working with predominately same-race coworkers tends to diminish perceptions of racial discrimination, (2) perceived racial discrimination mediates some of the effects of racial/ethnic composition on organizational attachment, and (3) some non-symmetric effects between non-Whites and Whites are found. We conclude with implications for future research. 相似文献