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Simulation results are reported on methods that allow both within group and between group heteroscedasticity when testing the hypothesis that independent groups have identical regression parameters. The methods are based on a combination of extant techniques, but their finite-sample properties have not been studied. Included are results on the impact of removing all leverage points or just bad leverage points. The method used to identify leverage points can be important and can improve control over the Type I error probability. Results are illustrated using data from the Well Elderly II study. 相似文献
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Recent social changes have made husbands' emotional investments and wives' perceptions of equity in the division of housework crucial for women's marital happiness. But wives are also happiest in their marriages when they share a strong normative commitment to lifelong marriage with their husbands and when their husbands take the lead in breadwinning. Thus our research suggests that elements of the new and the old promote marital happiness among contemporary wives. 相似文献
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Wilcox MM 《Journal of homosexuality》2006,52(1-2):73-100
Many queer theorists, like many queer activists and perhaps many LGBT people in general, regard religion as so inimical to their purposes and lives that it is not even worthy of critique; references to religion in queer theory, queer studies, and even LGBT studies are usually sparse, brief, and generally derogatory. Likewise, within most of the field of religious studies, queerness is rarely an issue of concern or even consciousness except in the context of organizational tensions over the proper roles of "homosexuals." While there is a growing body of work that brings these two fields together, the study of religion seems to be adapting only haltingly and partially to contemporary developments inLGBTstudies and queer theory. This essay assesses the current state of the "proto-fields" of LGBT studies and queer studies in religion, offers suggestions for new directions in the future, and considers the potential benefits of the interaction of these fields. 相似文献
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Rand R. Wilcox 《统计学通讯:理论与方法》2013,42(4):881-888
Naranjo and HeUmansperger (1994) recently derved a bounded influence rank regression method and suggested how hypotheses about the regression coefficients might be tested. This brief note reports some simulation results on how their procedure performs when there is one predictor. Even when the error term is highly skewed, good control over the Type I error probability is obtained Power can be high relative to least squares regression when the error term has a heavy tailed distribution .and the predictor has a symmetric distribution However, if the predictor has a skewed distribution, power can be relatively low even when the distribution of the error term is heavy tailed. Despite this, it is argued that their method provides an important and useful alternative to ordinary least squares as well as other robust regression methods. 相似文献
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While school-based adolescent victimization has received a great deal of public attention, there exist relatively few theoretically driven studies aimed at explaining this phenomenon. We address this paucity by providing a test of a criminal-opportunity model of school-based victimization using data on over 3,000 students from 40 different Kentucky middle and high schools. The effects of opportunity-related concepts are estimated for both violent and property victimization, and comparisons are made for each victimization type across middle- and high-school student subsamples. Findings suggest that criminal opportunity theory is relevant to the understanding of school-based victimization. In particular, indicators of exposure to crime and target antagonism appear to be robust predictors. Further, there appears to be substantial generalizability in the effects of opportunity-related variables across violent versus property victimization as well as across middle-school versus high-school contexts. 相似文献