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321.
A definition of reproducibility in Guttman Scaling and two chance measures of reproducibility are suggested. The first measure assumes that the items are independent. The second method assumes nonindependent items and fits respondent and item margins by an iterative method used in fitting log-linear models. Chance reproducibility is conceptualized in terms of assumptions about respondent variability. 相似文献
322.
Robinson A. Grover 《Theory and Decision》1974,4(3-4):277-299
This paper is an attempt to raise some general objections to the whole concept of making decisions on teleological principles. Its scope is finally the whole concept of how we rationally decide, on a teleological basis, to do any act at all. However the arguments developed here arise from the recent discussions about one particular species of teleological decision-making - utilitarianism. Therefore, while I hope that the paper has consequences that are important far beyond this one ethical theory, my objections are phrased in terms of direct arguments about utilitarianism. The recent lively debates on this topic make it easy to ask some interesting questions about this sort of goal-oriented theory. However, if my objections are correct, the scope of these questions is much wider than any one utilitarian theory (or cluster of theories) because my objections are about an assumption that is common to all teleological theories and not just to classical utilitarianism. 相似文献
323.
Summary A variety of test measures and biographical variables was relatedto the theoretical and practical course performance of two separateintakes of social work students who began their professionalcourses in a polytechnic in 1968 or 1969. Theoretical performancewas effectively predicted by cognitive variables, but only onetest, a measure of persistence, correlated significantly andconsistently with the practical criterion 相似文献
324.
A. Graycar 《The Australian journal of social issues》1971,6(2):108-115
Politics, described as ‘the authoritative allocation of values for a community’, arises out of conflict. Each party to any conflict attempts to have its interest prevail. The more organized a group and the more resources at its disposal, the more likely that its interest will prevail. Politics is significant in the determination of eventual policies in health matters. The consumer in health matters tends to accept what is presented to him. The interaction of differing attitudes, values and actions of interest groups in the health field is surveyed, and it is maintained that the politics of health warrant a greatly increased focus of attention from political scientists. 相似文献
325.
326.
W. Parker Frisbie Ph.D. Douglas Forbes Robert A. Hummer Starling G. Pullum 《Demography》1998,35(4):519-527
In a recent article (Frisbie. Forbes. and Pullum 1996) we documented racial/ethnic differences in birth outcomes according to a more fine-grained classification than has typically been employed in the demographic literature. In his commentary, van der Veen focuses on the measurement of one of the dimensions of that classification, maturity of the infant. as proxied by the fetal growth ratio. The crux of the critique is easily seen in van der Veen's statement that “all of my disagreements with Frisbie et al. 's method arise from their particular use of a postnatal standard for the assessment of intrauterine growth.” Our critic misunderstands our objective: He fails to realize our interest in birth outcome, not pregnancy process, and does not perceive that our intent was to extend the research extant in both the demographic and public-health literatures in which patently postnatal (i.e., ex utero) measures are taken as outcomes interesting in their own right and/or as risk factors for infant mortality and infant and childhood morbidity. Specifically, he does recognize that we purposefully expanded our focus to include moderately compromised births to determine if they were at higher risk than the normal births with whom they are conventionally categorized. Our discussion draws on research cited in the original article, on studies cited by our critic, and on a few more recent investigations. Although we have never argued that ours is the only, or even the best, approach in all cases, we try to clarify the rationale for, and adduce additional empirical evidence of, the utility of the method we used. 相似文献
327.
We investigate the extent and implications of cohabitation and marriage among U.S. welfare recipients. An analysis of four data sets (the Current Population Survey, the National Survey of Families and Households, the Panel Study of Income Dynamics, and the National Longitudinal Survey of Youth) shows significant numbers of cohabitors among recipients of AFDC. An even more surprising finding is the large number of married women on welfare. We also report the results of a telephone survey of state AFDC agencies conducted to determine state rules governing cohabitation and marriage. The survey results indicate that, in a number of respects, AFDC rules encourage cohabitation. Finally, we conduct an analysis of the impact of AFDC rules on cohabitation, marriage, and single motherhood and find weak evidence in support of incentives to cohabit. 相似文献
328.
Father by law: Effects of joint legal custody on nonresident fathers’ involvement with children 总被引:1,自引:0,他引:1
Judith A. Seltzer 《Demography》1998,35(2):135-146
Family membership and household composition do not always coincide. Joint legal custody after divorce formalizes the relationship between fathers and children who live apart. Policymakers hope that explicit acknowledgment of nonresident fathers’ rights and responsibilities will increase their involvement with their children. I use prospective data from the National Survey of Families and Households to examine the association between joint legal custody and two aspects of nonresident fathers’ contributions to their children—the frequency of visits between fathers and children and child-support payments. The analysis examines approximately 160 families in which parents divorced between interviews conducted for Wave 1 (1987–1988) and Wave 2 (1992–1994) of the survey. I investigate the effects of joint legal custody holding constant physical custody or placement by restricting the analysis to children who live with their mothers most of the year. Controlling for socioeconomic status and the quality of family relationships before separation, fathers with joint legal custody see their children more frequently and have more overnight visits than do other fathers. The positive effect of joint legal custody on frequency of visits persists once unobserved differences among families are taken into account. Although fathers with joint legal custody pay more child support than those without joint legal custody, this difference lacks statistical significance when other family characteristics are taken into account. These findings support the view that joint legal custody may encourage some aspects of paternal involvement after divorce. 相似文献
329.
Population and Environment - 相似文献
330.